TY  - JOUR
AU  - Hutli, Ezddin
AU  - Petrović, Petar
AU  - Nedeljković, Miloš
AU  - Legrady, David
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3750
AB  - In a cavitating water jet, cavity clouds emerge and collapse with an unsteady, but periodic tendency where the frequencies depend on the working conditions. The presented work aims at examining and analyze the dynamic behavior and properties of the clouds under different circumstances. Computer vision and image processing were introduced as tools to define the cavitation clouds based on the Contour Recognition technique. A Canny operator and Otsu threshold fragmenting methods were used. The use of these methods allows for a better understanding of the cavitating jet clouds' behavior based on the pixel intensities and shows that for an arbitrary cloud the surface itself has a dynamic feature and depends on the cavity composition. The clouds' properties could be measured and correlated to the applied working conditions. Also, the oscillation frequencies of the area of the clouds could be determined. The analysis shows that the quality of the obtained results depends mainly on the input threshold values separating the foreground and background pixels. The difficulty of defining the threshold value is discussed in the paper, as well as the validity of using the Contour Recognition technique in this field.
PB  - Springer, Dordrecht
T2  - Flow Turbulence and Combustion
T1  - Automatic Edge Detection Applied to Cavitating Flow Analysis: Cavitation Cloud Dynamics and Properties Measured through Detected Image Regions
EP  - 893
IS  - 3
SP  - 865
VL  - 108
DO  - 10.1007/s10494-021-00290-x
ER  - 

@article{
author = "Hutli, Ezddin and Petrović, Petar and Nedeljković, Miloš and Legrady, David",
year = "2022",
abstract = "In a cavitating water jet, cavity clouds emerge and collapse with an unsteady, but periodic tendency where the frequencies depend on the working conditions. The presented work aims at examining and analyze the dynamic behavior and properties of the clouds under different circumstances. Computer vision and image processing were introduced as tools to define the cavitation clouds based on the Contour Recognition technique. A Canny operator and Otsu threshold fragmenting methods were used. The use of these methods allows for a better understanding of the cavitating jet clouds' behavior based on the pixel intensities and shows that for an arbitrary cloud the surface itself has a dynamic feature and depends on the cavity composition. The clouds' properties could be measured and correlated to the applied working conditions. Also, the oscillation frequencies of the area of the clouds could be determined. The analysis shows that the quality of the obtained results depends mainly on the input threshold values separating the foreground and background pixels. The difficulty of defining the threshold value is discussed in the paper, as well as the validity of using the Contour Recognition technique in this field.",
publisher = "Springer, Dordrecht",
journal = "Flow Turbulence and Combustion",
title = "Automatic Edge Detection Applied to Cavitating Flow Analysis: Cavitation Cloud Dynamics and Properties Measured through Detected Image Regions",
pages = "893-865",
number = "3",
volume = "108",
doi = "10.1007/s10494-021-00290-x"
}

Hutli, E., Petrović, P., Nedeljković, M.,& Legrady, D.. (2022). Automatic Edge Detection Applied to Cavitating Flow Analysis: Cavitation Cloud Dynamics and Properties Measured through Detected Image Regions. in Flow Turbulence and Combustion
Springer, Dordrecht., 108(3), 865-893.
https://doi.org/10.1007/s10494-021-00290-x

Hutli E, Petrović P, Nedeljković M, Legrady D. Automatic Edge Detection Applied to Cavitating Flow Analysis: Cavitation Cloud Dynamics and Properties Measured through Detected Image Regions. in Flow Turbulence and Combustion. 2022;108(3):865-893.
doi:10.1007/s10494-021-00290-x .

Hutli, Ezddin, Petrović, Petar, Nedeljković, Miloš, Legrady, David, "Automatic Edge Detection Applied to Cavitating Flow Analysis: Cavitation Cloud Dynamics and Properties Measured through Detected Image Regions" in Flow Turbulence and Combustion, 108, no. 3 (2022):865-893,
https://doi.org/10.1007/s10494-021-00290-x . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Czifrus, Szabolcs
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3344
AB  - This part of the paper presents the relation between the working conditions, nozzle geometry, nozzle diameter, and jet behavior. Experimental work has been made by impinging the submerged jets on the copper specimen as a target for a period of time. The mass loss and erosion rate at various conditions were measured, calculated and analyzed. For the visualization, a high-speed camera was used and the obtained data were processed to measure parameters which are used to characterize the clouds. Correlations among the jet dynamic power, the cavity length, erosion rate, and the pertinent experimental parameters are apparent. In addition, formulas are proposed to conveniently compare the efficiency of jetting systems based on working conditions. Based on the mathematical analyses of the obtained results a new form for cavitation number calculation is proposed.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Study and analysis of the cavitating and non-cavitating jets part two parameters controlling the jet action and a new formula for cavitation number calculation
EP  - 419
IS  - 1
SP  - 407
VL  - 24
DO  - 10.2298/TSCI190428334H
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Czifrus, Szabolcs",
year = "2020",
abstract = "This part of the paper presents the relation between the working conditions, nozzle geometry, nozzle diameter, and jet behavior. Experimental work has been made by impinging the submerged jets on the copper specimen as a target for a period of time. The mass loss and erosion rate at various conditions were measured, calculated and analyzed. For the visualization, a high-speed camera was used and the obtained data were processed to measure parameters which are used to characterize the clouds. Correlations among the jet dynamic power, the cavity length, erosion rate, and the pertinent experimental parameters are apparent. In addition, formulas are proposed to conveniently compare the efficiency of jetting systems based on working conditions. Based on the mathematical analyses of the obtained results a new form for cavitation number calculation is proposed.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Study and analysis of the cavitating and non-cavitating jets part two parameters controlling the jet action and a new formula for cavitation number calculation",
pages = "419-407",
number = "1",
volume = "24",
doi = "10.2298/TSCI190428334H"
}

Hutli, E., Nedeljković, M.,& Czifrus, S.. (2020). Study and analysis of the cavitating and non-cavitating jets part two parameters controlling the jet action and a new formula for cavitation number calculation. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 24(1), 407-419.
https://doi.org/10.2298/TSCI190428334H

Hutli E, Nedeljković M, Czifrus S. Study and analysis of the cavitating and non-cavitating jets part two parameters controlling the jet action and a new formula for cavitation number calculation. in Thermal Science. 2020;24(1):407-419.
doi:10.2298/TSCI190428334H .

Hutli, Ezddin, Nedeljković, Miloš, Czifrus, Szabolcs, "Study and analysis of the cavitating and non-cavitating jets part two parameters controlling the jet action and a new formula for cavitation number calculation" in Thermal Science, 24, no. 1 (2020):407-419,
https://doi.org/10.2298/TSCI190428334H . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Czifrus, Szabolcs
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3304
AB  - This paper presents the dependency of the jet power and the cavitation intensity on the working conditions of the cavitating and non-cavitating jet flow. This dependency is indicated by the cavitation erosion process and flow structure. The effects of working conditions on the cavitation erosion were experimentally investigated. The flow visualization was done using a high-speed photography recording system. The analysis shows that the erosion rate calculation and the visualization of the jet structure can be used as tools to estimate the jet strength, the jet actions, the jet power, and the performance of the jetting system.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Study and analysis of the cavitating and non-cavitating jets part one parameters controlling force, power, and the jet behavior
EP  - 406
IS  - 1
SP  - 393
VL  - 24
DO  - 10.2298/TSCI190428333H
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Czifrus, Szabolcs",
year = "2020",
abstract = "This paper presents the dependency of the jet power and the cavitation intensity on the working conditions of the cavitating and non-cavitating jet flow. This dependency is indicated by the cavitation erosion process and flow structure. The effects of working conditions on the cavitation erosion were experimentally investigated. The flow visualization was done using a high-speed photography recording system. The analysis shows that the erosion rate calculation and the visualization of the jet structure can be used as tools to estimate the jet strength, the jet actions, the jet power, and the performance of the jetting system.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Study and analysis of the cavitating and non-cavitating jets part one parameters controlling force, power, and the jet behavior",
pages = "406-393",
number = "1",
volume = "24",
doi = "10.2298/TSCI190428333H"
}

Hutli, E., Nedeljković, M.,& Czifrus, S.. (2020). Study and analysis of the cavitating and non-cavitating jets part one parameters controlling force, power, and the jet behavior. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 24(1), 393-406.
https://doi.org/10.2298/TSCI190428333H

Hutli E, Nedeljković M, Czifrus S. Study and analysis of the cavitating and non-cavitating jets part one parameters controlling force, power, and the jet behavior. in Thermal Science. 2020;24(1):393-406.
doi:10.2298/TSCI190428333H .

Hutli, Ezddin, Nedeljković, Miloš, Czifrus, Szabolcs, "Study and analysis of the cavitating and non-cavitating jets part one parameters controlling force, power, and the jet behavior" in Thermal Science, 24, no. 1 (2020):393-406,
https://doi.org/10.2298/TSCI190428333H . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Fekete, Tamas
AU  - Nedeljković, Miloš
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3110
AB  - In this paper the investigation and analysis of ductile materials behavior under cavitation bubble collapsing are presented. Three ductile materials (Cu, AlMnMg-alloy, and St.St.316) were treated with cavitation. The cavitating jet generator was used as a tool to produce intensive, fast and severe cavitation phenomenon which is suitable for cavitation damage resistance study. The treated surfaces were characterized in detail by using different microscopy techniques and surface morphology analysis was done. The obtained result shows that the damage process is created by the shearing stress on the surface induced by microjets during cavity collapse. The mechanical properties of the material mainly "fatigue strength" and its Stacking Fault Energy (SFE) played a major role in the damage process. The cavitation damage based on exposure time period starts with surface hardening, followed by plastic deformation and finally by erosion and cracking as a consequence. The in-depth surface characterization using these microscopy techniques provides significant information for monitoring and understanding the cavitation damage mechanism and progress. Energy-dispersive X-ray spectroscopy (EDS) was used to measure the composition of the test materials which helps in the interpretation of the behavior of the material under the cavitation attack.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Surface characteristics and cavitation damage progress in ductile materials
VL  - 106
DO  - 10.1016/j.engfailanal.2019.104157
ER  - 

@article{
author = "Hutli, Ezddin and Fekete, Tamas and Nedeljković, Miloš",
year = "2019",
abstract = "In this paper the investigation and analysis of ductile materials behavior under cavitation bubble collapsing are presented. Three ductile materials (Cu, AlMnMg-alloy, and St.St.316) were treated with cavitation. The cavitating jet generator was used as a tool to produce intensive, fast and severe cavitation phenomenon which is suitable for cavitation damage resistance study. The treated surfaces were characterized in detail by using different microscopy techniques and surface morphology analysis was done. The obtained result shows that the damage process is created by the shearing stress on the surface induced by microjets during cavity collapse. The mechanical properties of the material mainly "fatigue strength" and its Stacking Fault Energy (SFE) played a major role in the damage process. The cavitation damage based on exposure time period starts with surface hardening, followed by plastic deformation and finally by erosion and cracking as a consequence. The in-depth surface characterization using these microscopy techniques provides significant information for monitoring and understanding the cavitation damage mechanism and progress. Energy-dispersive X-ray spectroscopy (EDS) was used to measure the composition of the test materials which helps in the interpretation of the behavior of the material under the cavitation attack.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Surface characteristics and cavitation damage progress in ductile materials",
volume = "106",
doi = "10.1016/j.engfailanal.2019.104157"
}

Hutli, E., Fekete, T.,& Nedeljković, M.. (2019). Surface characteristics and cavitation damage progress in ductile materials. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 106.
https://doi.org/10.1016/j.engfailanal.2019.104157

Hutli E, Fekete T, Nedeljković M. Surface characteristics and cavitation damage progress in ductile materials. in Engineering Failure Analysis. 2019;106.
doi:10.1016/j.engfailanal.2019.104157 .

Hutli, Ezddin, Fekete, Tamas, Nedeljković, Miloš, "Surface characteristics and cavitation damage progress in ductile materials" in Engineering Failure Analysis, 106 (2019),
https://doi.org/10.1016/j.engfailanal.2019.104157 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Bonyar, Attila
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3130
AB  - High-speed visualization and subsequent statistical analysis of a high-speed cavitating water jet were performed with a custom image acquisition and processing system. In a cavitating water jet, cavity clouds form and collapse with an unsteady, periodic tendency where the frequency depends on the flow conditions. The aim of the presented investigations was to examine and analyse the dynamic behaviour of these cavity clouds to understand the effect of the influencing experimental working conditions, such as injection pressure, nozzle geometry and shape (convergent or divergent) on the size, integrity and life cycle of the clouds. The results show oscillation patterns in the geometry of the clouds (thickness, length, area, etc.), through shedding, growing, shrinking, which are related to upstream pressure fluctuations caused by the plunger pump and the interaction between the jet and the surroundings. The corresponding characteristic oscillation frequencies of the cavitating jets were also determined through cloud shape analysis.
PB  - Springer Heidelberg, Heidelberg
T2  - Journal of The Brazilian Society of Mechanical Sciences and Engineering
T1  - Dynamic behaviour of cavitation clouds: visualization and statistical analysis
IS  - 7
VL  - 41
DO  - 10.1007/s40430-019-1777-9
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Bonyar, Attila",
year = "2019",
abstract = "High-speed visualization and subsequent statistical analysis of a high-speed cavitating water jet were performed with a custom image acquisition and processing system. In a cavitating water jet, cavity clouds form and collapse with an unsteady, periodic tendency where the frequency depends on the flow conditions. The aim of the presented investigations was to examine and analyse the dynamic behaviour of these cavity clouds to understand the effect of the influencing experimental working conditions, such as injection pressure, nozzle geometry and shape (convergent or divergent) on the size, integrity and life cycle of the clouds. The results show oscillation patterns in the geometry of the clouds (thickness, length, area, etc.), through shedding, growing, shrinking, which are related to upstream pressure fluctuations caused by the plunger pump and the interaction between the jet and the surroundings. The corresponding characteristic oscillation frequencies of the cavitating jets were also determined through cloud shape analysis.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Journal of The Brazilian Society of Mechanical Sciences and Engineering",
title = "Dynamic behaviour of cavitation clouds: visualization and statistical analysis",
number = "7",
volume = "41",
doi = "10.1007/s40430-019-1777-9"
}

Hutli, E., Nedeljković, M.,& Bonyar, A.. (2019). Dynamic behaviour of cavitation clouds: visualization and statistical analysis. in Journal of The Brazilian Society of Mechanical Sciences and Engineering
Springer Heidelberg, Heidelberg., 41(7).
https://doi.org/10.1007/s40430-019-1777-9

Hutli E, Nedeljković M, Bonyar A. Dynamic behaviour of cavitation clouds: visualization and statistical analysis. in Journal of The Brazilian Society of Mechanical Sciences and Engineering. 2019;41(7).
doi:10.1007/s40430-019-1777-9 .

Hutli, Ezddin, Nedeljković, Miloš, Bonyar, Attila, "Dynamic behaviour of cavitation clouds: visualization and statistical analysis" in Journal of The Brazilian Society of Mechanical Sciences and Engineering, 41, no. 7 (2019),
https://doi.org/10.1007/s40430-019-1777-9 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Bonyar, Attila
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2891
AB  - The aim of this paper is to demonstrate the possibly of using the cavitation phenomenon, primarily a cavitating water jet, for the controlled surface modification of metallic biomaterials. Stainless steel 316 (an austenitic face centered cubic metal) was subjected to high-speed submerged cavitating jets under certain working conditions, and different exposure times. The force generated by the collapse of cavitation bubbles is used to modify the surface topography on micro- and nano levels. Optical microscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and interferometric profiling were used to characterize the surface morphology before and after cavitation treatment. The results confirm that at short exposure times, the observed characteristic features in the microstructure - holes and hills without material loss and wavy configuration - can be related to plastic deformation, while longer exposure times lead to erosion accompanied by material loss. The results related to the different stages of cavitation damage demonstrate the possibility to use cavitation as a micro-nano fabrication method for the modification of biomaterial surfaces, e.g. for the controlled and convenient increase of surface roughness.
PB  - Elsevier Science Bv, Amsterdam
T2  - Applied Surface Science
T1  - Controlled modification of the surface morphology and roughness of stainless steel 316 by a high speed submerged cavitating water jet
EP  - 304
SP  - 293
VL  - 458
DO  - 10.1016/j.apsusc.2018.07.007
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Bonyar, Attila",
year = "2018",
abstract = "The aim of this paper is to demonstrate the possibly of using the cavitation phenomenon, primarily a cavitating water jet, for the controlled surface modification of metallic biomaterials. Stainless steel 316 (an austenitic face centered cubic metal) was subjected to high-speed submerged cavitating jets under certain working conditions, and different exposure times. The force generated by the collapse of cavitation bubbles is used to modify the surface topography on micro- and nano levels. Optical microscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and interferometric profiling were used to characterize the surface morphology before and after cavitation treatment. The results confirm that at short exposure times, the observed characteristic features in the microstructure - holes and hills without material loss and wavy configuration - can be related to plastic deformation, while longer exposure times lead to erosion accompanied by material loss. The results related to the different stages of cavitation damage demonstrate the possibility to use cavitation as a micro-nano fabrication method for the modification of biomaterial surfaces, e.g. for the controlled and convenient increase of surface roughness.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Surface Science",
title = "Controlled modification of the surface morphology and roughness of stainless steel 316 by a high speed submerged cavitating water jet",
pages = "304-293",
volume = "458",
doi = "10.1016/j.apsusc.2018.07.007"
}

Hutli, E., Nedeljković, M.,& Bonyar, A.. (2018). Controlled modification of the surface morphology and roughness of stainless steel 316 by a high speed submerged cavitating water jet. in Applied Surface Science
Elsevier Science Bv, Amsterdam., 458, 293-304.
https://doi.org/10.1016/j.apsusc.2018.07.007

Hutli E, Nedeljković M, Bonyar A. Controlled modification of the surface morphology and roughness of stainless steel 316 by a high speed submerged cavitating water jet. in Applied Surface Science. 2018;458:293-304.
doi:10.1016/j.apsusc.2018.07.007 .

Hutli, Ezddin, Nedeljković, Miloš, Bonyar, Attila, "Controlled modification of the surface morphology and roughness of stainless steel 316 by a high speed submerged cavitating water jet" in Applied Surface Science, 458 (2018):293-304,
https://doi.org/10.1016/j.apsusc.2018.07.007 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Bonyar, Attila
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2913
AB  - Analytical and theoretical discussions validated by experimental investigations are presented to comprehensively study the relation between the geometrical parameters, such as the dimensionless standoff distance and nozzle geometry, and the cavity potential energy, and void fraction to improve the performance of submerged cavitating water jets. The force generated by the collapse of cavitation clouds was employed to initiate cavitation erosion in copper test samples under various hydrodynamic and geometrical conditions. The nozzle diameter and the separation distance between the nozzle and the specimen were varied in order to determine the optimal geometrical configuration, which leads to maximal erosion rate. The damaged specimens were investigated using optical and scanning electron microscopy (SEM). The obtained results - along with selected, previously published works from the literature - verify the analytically derived formulas, which emphasize the connection between the dimensionless standoff distance, and the cavitation intensity, potential energy, void fraction, and indicate the existence of an optimal dimensionless standoff distance for maximal erosion rate. Formulas to conveniently compare the efficiency of a cavitating jet based on energy consumption and dimensionless standoff distance are also presented and demonstrated. The influence of nozzle diameter and standoff distance on the kinetic energy and the specific energy consumption was clearly observed.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - International Journal of Heat and Mass Transfer
T1  - Cavitating flow characteristics, cavity potential and kinetic energy, void fraction and geometrical parameters - Analytical and theoretical study validated by experimental investigations
EP  - 886
SP  - 873
VL  - 117
DO  - 10.1016/j.ijheatmasstransfer.2017.10.018
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Bonyar, Attila",
year = "2018",
abstract = "Analytical and theoretical discussions validated by experimental investigations are presented to comprehensively study the relation between the geometrical parameters, such as the dimensionless standoff distance and nozzle geometry, and the cavity potential energy, and void fraction to improve the performance of submerged cavitating water jets. The force generated by the collapse of cavitation clouds was employed to initiate cavitation erosion in copper test samples under various hydrodynamic and geometrical conditions. The nozzle diameter and the separation distance between the nozzle and the specimen were varied in order to determine the optimal geometrical configuration, which leads to maximal erosion rate. The damaged specimens were investigated using optical and scanning electron microscopy (SEM). The obtained results - along with selected, previously published works from the literature - verify the analytically derived formulas, which emphasize the connection between the dimensionless standoff distance, and the cavitation intensity, potential energy, void fraction, and indicate the existence of an optimal dimensionless standoff distance for maximal erosion rate. Formulas to conveniently compare the efficiency of a cavitating jet based on energy consumption and dimensionless standoff distance are also presented and demonstrated. The influence of nozzle diameter and standoff distance on the kinetic energy and the specific energy consumption was clearly observed.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Heat and Mass Transfer",
title = "Cavitating flow characteristics, cavity potential and kinetic energy, void fraction and geometrical parameters - Analytical and theoretical study validated by experimental investigations",
pages = "886-873",
volume = "117",
doi = "10.1016/j.ijheatmasstransfer.2017.10.018"
}

Hutli, E., Nedeljković, M.,& Bonyar, A.. (2018). Cavitating flow characteristics, cavity potential and kinetic energy, void fraction and geometrical parameters - Analytical and theoretical study validated by experimental investigations. in International Journal of Heat and Mass Transfer
Pergamon-Elsevier Science Ltd, Oxford., 117, 873-886.
https://doi.org/10.1016/j.ijheatmasstransfer.2017.10.018

Hutli E, Nedeljković M, Bonyar A. Cavitating flow characteristics, cavity potential and kinetic energy, void fraction and geometrical parameters - Analytical and theoretical study validated by experimental investigations. in International Journal of Heat and Mass Transfer. 2018;117:873-886.
doi:10.1016/j.ijheatmasstransfer.2017.10.018 .

Hutli, Ezddin, Nedeljković, Miloš, Bonyar, Attila, "Cavitating flow characteristics, cavity potential and kinetic energy, void fraction and geometrical parameters - Analytical and theoretical study validated by experimental investigations" in International Journal of Heat and Mass Transfer, 117 (2018):873-886,
https://doi.org/10.1016/j.ijheatmasstransfer.2017.10.018 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Bonyar, Attila
AU  - Legrady, David
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2636
AB  - The influence of the geometrical working parameters on the cavitation erosion process was experimentally investigated by exposing the surfaces of copper samples (as a kind of Face Centred Cubic material (FCC)) to a high speed submerged cavitating jet for various time periods using a cavitating jet generator. The resulting erosion rate and eroded area is discussed in detail. Influences of the non-dimensional standoff distance, the non-dimensional aspect ratio and the angle of attack is experimentally determined. The results show that the erosion rate and weight loss are strongly depending on these separately investigated parameters. With this test rig facility and applied hydrodynamic parameters the maximum erosion was found to take place with a non-dimensional standoff distance varying between 42 and 48 (depending on the nozzle diameter), with a non-dimensional aspect ratio of 11 and with 105 angle of attack. A model to explain the influence of the angle of attack on the erosion rate based on the cavity bubble and target surface interaction is presented. In addition, the obtained results demonstrate that the used small diameter (0.4-0.6 mm) water cutting nozzles could be applied for metal machining by cavitation and cavitation cutting with low power consumption and high cutting efficiency.
PB  - Elsevier Science Inc, New York
T2  - Experimental Thermal and Fluid Science
T1  - Experimental study on the influence of geometrical parameters on the cavitation erosion characteristics of high speed submerged jets
EP  - 292
SP  - 281
VL  - 80
DO  - 10.1016/j.expthermflusci.2016.08.026
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Bonyar, Attila and Legrady, David",
year = "2017",
abstract = "The influence of the geometrical working parameters on the cavitation erosion process was experimentally investigated by exposing the surfaces of copper samples (as a kind of Face Centred Cubic material (FCC)) to a high speed submerged cavitating jet for various time periods using a cavitating jet generator. The resulting erosion rate and eroded area is discussed in detail. Influences of the non-dimensional standoff distance, the non-dimensional aspect ratio and the angle of attack is experimentally determined. The results show that the erosion rate and weight loss are strongly depending on these separately investigated parameters. With this test rig facility and applied hydrodynamic parameters the maximum erosion was found to take place with a non-dimensional standoff distance varying between 42 and 48 (depending on the nozzle diameter), with a non-dimensional aspect ratio of 11 and with 105 angle of attack. A model to explain the influence of the angle of attack on the erosion rate based on the cavity bubble and target surface interaction is presented. In addition, the obtained results demonstrate that the used small diameter (0.4-0.6 mm) water cutting nozzles could be applied for metal machining by cavitation and cavitation cutting with low power consumption and high cutting efficiency.",
publisher = "Elsevier Science Inc, New York",
journal = "Experimental Thermal and Fluid Science",
title = "Experimental study on the influence of geometrical parameters on the cavitation erosion characteristics of high speed submerged jets",
pages = "292-281",
volume = "80",
doi = "10.1016/j.expthermflusci.2016.08.026"
}

Hutli, E., Nedeljković, M., Bonyar, A.,& Legrady, D.. (2017). Experimental study on the influence of geometrical parameters on the cavitation erosion characteristics of high speed submerged jets. in Experimental Thermal and Fluid Science
Elsevier Science Inc, New York., 80, 281-292.
https://doi.org/10.1016/j.expthermflusci.2016.08.026

Hutli E, Nedeljković M, Bonyar A, Legrady D. Experimental study on the influence of geometrical parameters on the cavitation erosion characteristics of high speed submerged jets. in Experimental Thermal and Fluid Science. 2017;80:281-292.
doi:10.1016/j.expthermflusci.2016.08.026 .

Hutli, Ezddin, Nedeljković, Miloš, Bonyar, Attila, Legrady, David, "Experimental study on the influence of geometrical parameters on the cavitation erosion characteristics of high speed submerged jets" in Experimental Thermal and Fluid Science, 80 (2017):281-292,
https://doi.org/10.1016/j.expthermflusci.2016.08.026 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Bonyar, Attila
AU  - Oszetzky, Daniel
AU  - Nedeljković, Miloš
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2287
AB  - The aim of this paper is to demonstrate and establish a possible application of the cavitation phenomenon as an efficient method to modify surface properties. Three FCC (Face Centered Cubic) materials were subjected to high speed submerged cavitating jets under certain working conditions, for time periods between 15 and 1800 s. The force generated by cavitation is employed to modify the surface roughness in nano- and micro-scales. The target surface was investigated with digital optical microscopy, atomic force and electrostatic force microscopy (AFM and EFM) and also with a white light interferometer. These different observation techniques indicate that at short exposure times, the observed characteristic features in the microstructure - hills, holes and wavy configuration - can be related to the start of the plastic deformation of the specimen surface. Longer exposure times inevitably result in a greater number of jet specimen interactions leading to specimen erosion and fracture. The results demonstrate the possibility to use cavitation bubbles as a micro-nanofabrication method for the surface preparation/modification or shoot-less surface peening. EFM results present a possibility of using cavitation as tool to enhance the electrostatic properties of a metal surface by modifying its roughness. The degree of enhancement depends on the material properties.
PB  - Elsevier, Amsterdam
T2  - Mechanics of Materials
T1  - Plastic deformation and modification of surface characteristics in nano- and micro-levels and enhancement of electric field of FCC materials using cavitation phenomenon
EP  - 298
SP  - 289
VL  - 92
DO  - 10.1016/j.mechmat.2015.10.006
ER  - 

@article{
author = "Hutli, Ezddin and Bonyar, Attila and Oszetzky, Daniel and Nedeljković, Miloš",
year = "2016",
abstract = "The aim of this paper is to demonstrate and establish a possible application of the cavitation phenomenon as an efficient method to modify surface properties. Three FCC (Face Centered Cubic) materials were subjected to high speed submerged cavitating jets under certain working conditions, for time periods between 15 and 1800 s. The force generated by cavitation is employed to modify the surface roughness in nano- and micro-scales. The target surface was investigated with digital optical microscopy, atomic force and electrostatic force microscopy (AFM and EFM) and also with a white light interferometer. These different observation techniques indicate that at short exposure times, the observed characteristic features in the microstructure - hills, holes and wavy configuration - can be related to the start of the plastic deformation of the specimen surface. Longer exposure times inevitably result in a greater number of jet specimen interactions leading to specimen erosion and fracture. The results demonstrate the possibility to use cavitation bubbles as a micro-nanofabrication method for the surface preparation/modification or shoot-less surface peening. EFM results present a possibility of using cavitation as tool to enhance the electrostatic properties of a metal surface by modifying its roughness. The degree of enhancement depends on the material properties.",
publisher = "Elsevier, Amsterdam",
journal = "Mechanics of Materials",
title = "Plastic deformation and modification of surface characteristics in nano- and micro-levels and enhancement of electric field of FCC materials using cavitation phenomenon",
pages = "298-289",
volume = "92",
doi = "10.1016/j.mechmat.2015.10.006"
}

Hutli, E., Bonyar, A., Oszetzky, D.,& Nedeljković, M.. (2016). Plastic deformation and modification of surface characteristics in nano- and micro-levels and enhancement of electric field of FCC materials using cavitation phenomenon. in Mechanics of Materials
Elsevier, Amsterdam., 92, 289-298.
https://doi.org/10.1016/j.mechmat.2015.10.006

Hutli E, Bonyar A, Oszetzky D, Nedeljković M. Plastic deformation and modification of surface characteristics in nano- and micro-levels and enhancement of electric field of FCC materials using cavitation phenomenon. in Mechanics of Materials. 2016;92:289-298.
doi:10.1016/j.mechmat.2015.10.006 .

Hutli, Ezddin, Bonyar, Attila, Oszetzky, Daniel, Nedeljković, Miloš, "Plastic deformation and modification of surface characteristics in nano- and micro-levels and enhancement of electric field of FCC materials using cavitation phenomenon" in Mechanics of Materials, 92 (2016):289-298,
https://doi.org/10.1016/j.mechmat.2015.10.006 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Bonyar, Attila
AU  - Radović, Nenad A.
AU  - Llić, Vojislav
AU  - Debeljković, Aleksandra
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2492
AB  - The aim of this paper is to investigate the possible application of the cavitation phenomenon as efficient method to modify the surface properties (e.g. the surface roughness) in the nano- and micro-levels. Aluminum alloy (AlSiMg) specimens were subjected to high speed submerged cavitating jets under various working conditions, for short time periods between 15 and 30 s. The force generated by the cavitating jet is employed to modify the surface roughness of the specimen. The target surface was analyzed with optical microscopy, white light interferometry, atomic force microscopy (AFM) and also with electrostatic force microscopy (EFM). The results show the possibility to use the cavitation bubbles as a nanofabrication method e.g. for shotless surface peening. With AFM, the deformation mechanism and the formation of planar or wavy slip were also investigated. EFM shows that the changes in the surface roughness also have a strong influence on, the electrostatic field above a biased sample.
PB  - Elsevier Sci Ltd, Oxford
T2  - Tribology International
T1  - The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level
EP  - 97
SP  - 88
VL  - 101
DO  - 10.1016/j.triboint.2016.04.006
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Bonyar, Attila and Radović, Nenad A. and Llić, Vojislav and Debeljković, Aleksandra",
year = "2016",
abstract = "The aim of this paper is to investigate the possible application of the cavitation phenomenon as efficient method to modify the surface properties (e.g. the surface roughness) in the nano- and micro-levels. Aluminum alloy (AlSiMg) specimens were subjected to high speed submerged cavitating jets under various working conditions, for short time periods between 15 and 30 s. The force generated by the cavitating jet is employed to modify the surface roughness of the specimen. The target surface was analyzed with optical microscopy, white light interferometry, atomic force microscopy (AFM) and also with electrostatic force microscopy (EFM). The results show the possibility to use the cavitation bubbles as a nanofabrication method e.g. for shotless surface peening. With AFM, the deformation mechanism and the formation of planar or wavy slip were also investigated. EFM shows that the changes in the surface roughness also have a strong influence on, the electrostatic field above a biased sample.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Tribology International",
title = "The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level",
pages = "97-88",
volume = "101",
doi = "10.1016/j.triboint.2016.04.006"
}

Hutli, E., Nedeljković, M., Bonyar, A., Radović, N. A., Llić, V.,& Debeljković, A.. (2016). The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level. in Tribology International
Elsevier Sci Ltd, Oxford., 101, 88-97.
https://doi.org/10.1016/j.triboint.2016.04.006

Hutli E, Nedeljković M, Bonyar A, Radović NA, Llić V, Debeljković A. The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level. in Tribology International. 2016;101:88-97.
doi:10.1016/j.triboint.2016.04.006 .

Hutli, Ezddin, Nedeljković, Miloš, Bonyar, Attila, Radović, Nenad A., Llić, Vojislav, Debeljković, Aleksandra, "The ability of using the cavitation phenomenon as a tool to modify the surface characteristics in micro- and in nano-level" in Tribology International, 101 (2016):88-97,
https://doi.org/10.1016/j.triboint.2016.04.006 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Radović, Nenad A.
AU  - Bonyar, Attila
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2497
AB  - In order to accurately and reliably evaluate the cavitation erosion resistance of materials using a cavitating jet generator, the effects of the hydrodynamic parameters and the nozzle geometry on the erosion process were investigated. Since the behaviour of a high speed submerged cavitating jet is also depending on the working conditions; their influence is also discussed based on the evaluation of cavitation erosion process. The erosion rate was used as an indicator for cavitating jet behaviour. Specimens of commercial purity copper were subjected to high speed submerged cavitating jets under different initial conditions, for certain time periods. The force generated by jet cavitation is employed to initiate the erosion in surface. The tested specimens were investigated with a digital optical microscope and a profilometer. It was found that erosion becomes more pronounced with decreasing cavitation numbers, as well as with increasing exit jet velocities. The nozzle configuration and hydrodynamic parameters have strong influences on the erosion rate, eroded area and depth of erosion. A comparison between the obtained results explains some of the mechanisms involved in cavitation and erosion processes and their relation to the tested parameters. Mathematical expressions which combine these parameters with the erosion rate are obtained. These parameters are very important in order to control the cavitation as a phenomenon and also to control the performance of the cavitating jet generator.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - International Journal of Multiphase Flow
T1  - The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process
EP  - 38
SP  - 27
VL  - 83
DO  - 10.1016/j.ijmultiphaseflow.2016.03.005
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Radović, Nenad A. and Bonyar, Attila",
year = "2016",
abstract = "In order to accurately and reliably evaluate the cavitation erosion resistance of materials using a cavitating jet generator, the effects of the hydrodynamic parameters and the nozzle geometry on the erosion process were investigated. Since the behaviour of a high speed submerged cavitating jet is also depending on the working conditions; their influence is also discussed based on the evaluation of cavitation erosion process. The erosion rate was used as an indicator for cavitating jet behaviour. Specimens of commercial purity copper were subjected to high speed submerged cavitating jets under different initial conditions, for certain time periods. The force generated by jet cavitation is employed to initiate the erosion in surface. The tested specimens were investigated with a digital optical microscope and a profilometer. It was found that erosion becomes more pronounced with decreasing cavitation numbers, as well as with increasing exit jet velocities. The nozzle configuration and hydrodynamic parameters have strong influences on the erosion rate, eroded area and depth of erosion. A comparison between the obtained results explains some of the mechanisms involved in cavitation and erosion processes and their relation to the tested parameters. Mathematical expressions which combine these parameters with the erosion rate are obtained. These parameters are very important in order to control the cavitation as a phenomenon and also to control the performance of the cavitating jet generator.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Multiphase Flow",
title = "The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process",
pages = "38-27",
volume = "83",
doi = "10.1016/j.ijmultiphaseflow.2016.03.005"
}

Hutli, E., Nedeljković, M., Radović, N. A.,& Bonyar, A.. (2016). The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process. in International Journal of Multiphase Flow
Pergamon-Elsevier Science Ltd, Oxford., 83, 27-38.
https://doi.org/10.1016/j.ijmultiphaseflow.2016.03.005

Hutli E, Nedeljković M, Radović NA, Bonyar A. The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process. in International Journal of Multiphase Flow. 2016;83:27-38.
doi:10.1016/j.ijmultiphaseflow.2016.03.005 .

Hutli, Ezddin, Nedeljković, Miloš, Radović, Nenad A., Bonyar, Attila, "The relation between the high speed submerged cavitating jet behaviour and the cavitation erosion process" in International Journal of Multiphase Flow, 83 (2016):27-38,
https://doi.org/10.1016/j.ijmultiphaseflow.2016.03.005 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Alteash, Omer
AU  - Raghisa, Ben Mostafa
AU  - Nedeljković, Miloš
AU  - Ilić, Vojislav
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1659
AB  - In order to study jet structure and behaviour of cloud cavitation within time and space, visualization of highly submerged cavitating water jet has been done using Stanford Optics 4 Quick 05 equipment, through endoscopes and other lenses with Drello3244 and Strobex Flash Chadwick as flashlight stroboscope. This included obligatory synchronization with several types of techniques and lenses. Images of the flow regime have been taken, allowing calculation of the non-dimensional cavitation cloud length under working conditions. Consequently a certain correlation has been proposed. The influencing parameters, such as; injection pressure, downstream pressure and cavitation number were experimentally proved to be very significant. The recordings of sono-luminescence phenomenon proved the collapsing of bubbles everywhere along the jet trajectory. In addition, the effect of temperature on sono-luminescence recordings was also a point of investigation.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Appearance of high submerged cavitating jet: The cavitation phenomenon and sono-luminescence
EP  - 1161
IS  - 4
SP  - 1151
VL  - 17
DO  - 10.2298/TSCI120925046H
ER  - 

@article{
author = "Hutli, Ezddin and Alteash, Omer and Raghisa, Ben Mostafa and Nedeljković, Miloš and Ilić, Vojislav",
year = "2013",
abstract = "In order to study jet structure and behaviour of cloud cavitation within time and space, visualization of highly submerged cavitating water jet has been done using Stanford Optics 4 Quick 05 equipment, through endoscopes and other lenses with Drello3244 and Strobex Flash Chadwick as flashlight stroboscope. This included obligatory synchronization with several types of techniques and lenses. Images of the flow regime have been taken, allowing calculation of the non-dimensional cavitation cloud length under working conditions. Consequently a certain correlation has been proposed. The influencing parameters, such as; injection pressure, downstream pressure and cavitation number were experimentally proved to be very significant. The recordings of sono-luminescence phenomenon proved the collapsing of bubbles everywhere along the jet trajectory. In addition, the effect of temperature on sono-luminescence recordings was also a point of investigation.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Appearance of high submerged cavitating jet: The cavitation phenomenon and sono-luminescence",
pages = "1161-1151",
number = "4",
volume = "17",
doi = "10.2298/TSCI120925046H"
}

Hutli, E., Alteash, O., Raghisa, B. M., Nedeljković, M.,& Ilić, V.. (2013). Appearance of high submerged cavitating jet: The cavitation phenomenon and sono-luminescence. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 17(4), 1151-1161.
https://doi.org/10.2298/TSCI120925046H

Hutli E, Alteash O, Raghisa BM, Nedeljković M, Ilić V. Appearance of high submerged cavitating jet: The cavitation phenomenon and sono-luminescence. in Thermal Science. 2013;17(4):1151-1161.
doi:10.2298/TSCI120925046H .

Hutli, Ezddin, Alteash, Omer, Raghisa, Ben Mostafa, Nedeljković, Miloš, Ilić, Vojislav, "Appearance of high submerged cavitating jet: The cavitation phenomenon and sono-luminescence" in Thermal Science, 17, no. 4 (2013):1151-1161,
https://doi.org/10.2298/TSCI120925046H . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Abouali, Salem
AU  - Ben, Hucine Mohamed
AU  - Mansour, Mohamed
AU  - Nedeljković, Miloš
AU  - Ilić, Vojislav
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1658
AB  - Based on visualization results of highly-submerged cavitating water jet obtained with digital camera, the influences of related parameters such as: injection pressure, nozzle diameter and geometry, nozzle mounting (for convergent/divergent flow), cavitation number and exit jet velocity, were investigated. In addition, the influence of visualization system position was also studied. All the parameters have been found to be of strong influence on the jet appearance and performance. Both hydro-dynamical and geometrical parameters are playing the main role in behavior and intensity of cavitation phenomenon produced by cavitating jet generator. Based on our considerable previous experience in working with cavitating jet generator, the working conditions were chosen in order to obtain measurable phenomenon.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Influence of hydrodynamic conditions and nozzle geometry on appearance of high submerged cavitating jets
EP  - 1149
IS  - 4
SP  - 1139
VL  - 17
DO  - 10.2298/TSCI120925045H
ER  - 

@article{
author = "Hutli, Ezddin and Abouali, Salem and Ben, Hucine Mohamed and Mansour, Mohamed and Nedeljković, Miloš and Ilić, Vojislav",
year = "2013",
abstract = "Based on visualization results of highly-submerged cavitating water jet obtained with digital camera, the influences of related parameters such as: injection pressure, nozzle diameter and geometry, nozzle mounting (for convergent/divergent flow), cavitation number and exit jet velocity, were investigated. In addition, the influence of visualization system position was also studied. All the parameters have been found to be of strong influence on the jet appearance and performance. Both hydro-dynamical and geometrical parameters are playing the main role in behavior and intensity of cavitation phenomenon produced by cavitating jet generator. Based on our considerable previous experience in working with cavitating jet generator, the working conditions were chosen in order to obtain measurable phenomenon.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Influence of hydrodynamic conditions and nozzle geometry on appearance of high submerged cavitating jets",
pages = "1149-1139",
number = "4",
volume = "17",
doi = "10.2298/TSCI120925045H"
}

Hutli, E., Abouali, S., Ben, H. M., Mansour, M., Nedeljković, M.,& Ilić, V.. (2013). Influence of hydrodynamic conditions and nozzle geometry on appearance of high submerged cavitating jets. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 17(4), 1139-1149.
https://doi.org/10.2298/TSCI120925045H

Hutli E, Abouali S, Ben HM, Mansour M, Nedeljković M, Ilić V. Influence of hydrodynamic conditions and nozzle geometry on appearance of high submerged cavitating jets. in Thermal Science. 2013;17(4):1139-1149.
doi:10.2298/TSCI120925045H .

Hutli, Ezddin, Abouali, Salem, Ben, Hucine Mohamed, Mansour, Mohamed, Nedeljković, Miloš, Ilić, Vojislav, "Influence of hydrodynamic conditions and nozzle geometry on appearance of high submerged cavitating jets" in Thermal Science, 17, no. 4 (2013):1139-1149,
https://doi.org/10.2298/TSCI120925045H . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Radović, Nenad A.
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1701
AB  - The aim of this paper is to establish a possible application of the cavitation phenomenon as an efficient method to modify surface properties at the nano and micro levels. Commercial-purity copper was subjected to high submerged cavitating jets under different initial conditions, for time periods between 15 and 1,800 s. The force generated by jet cavitation is employed to modify the surface roughness in the order of nano and micro scales. The target surface was analyzed with optical as well as scanning probe electron microscopy. The results showed the possibility to use cavitation bubbles to establish a nanofabrication method for the surface preparation, shoot-less surface peening (nano/micro level). Also, the cavitation is assumed to be one of the miniaturized testing methods that have to be developed to reliably measure mechanical properties in small dimensions and to identify the behavior caused by the size dependence. With optical, SEM, and atomic force microscopy observation techniques in this study, the deformation mechanism and the formation of planar or wavy slip were also studied. The results indicate that even at short exposure times, observed roughness having a characteristic "serpentine" configuration can be related to the start of the plastic deformation of the specimen surface. Longer exposure times inevitably result in a greater number of jetspecimen interactions leading to specimen fracture.
PB  - Springer, New York
T2  - Plasmonics
T1  - Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet
EP  - 849
IS  - 2
SP  - 843
VL  - 8
DO  - 10.1007/s11468-013-9481-6
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Radović, Nenad A.",
year = "2013",
abstract = "The aim of this paper is to establish a possible application of the cavitation phenomenon as an efficient method to modify surface properties at the nano and micro levels. Commercial-purity copper was subjected to high submerged cavitating jets under different initial conditions, for time periods between 15 and 1,800 s. The force generated by jet cavitation is employed to modify the surface roughness in the order of nano and micro scales. The target surface was analyzed with optical as well as scanning probe electron microscopy. The results showed the possibility to use cavitation bubbles to establish a nanofabrication method for the surface preparation, shoot-less surface peening (nano/micro level). Also, the cavitation is assumed to be one of the miniaturized testing methods that have to be developed to reliably measure mechanical properties in small dimensions and to identify the behavior caused by the size dependence. With optical, SEM, and atomic force microscopy observation techniques in this study, the deformation mechanism and the formation of planar or wavy slip were also studied. The results indicate that even at short exposure times, observed roughness having a characteristic "serpentine" configuration can be related to the start of the plastic deformation of the specimen surface. Longer exposure times inevitably result in a greater number of jetspecimen interactions leading to specimen fracture.",
publisher = "Springer, New York",
journal = "Plasmonics",
title = "Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet",
pages = "849-843",
number = "2",
volume = "8",
doi = "10.1007/s11468-013-9481-6"
}

Hutli, E., Nedeljković, M.,& Radović, N. A.. (2013). Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet. in Plasmonics
Springer, New York., 8(2), 843-849.
https://doi.org/10.1007/s11468-013-9481-6

Hutli E, Nedeljković M, Radović NA. Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet. in Plasmonics. 2013;8(2):843-849.
doi:10.1007/s11468-013-9481-6 .

Hutli, Ezddin, Nedeljković, Miloš, Radović, Nenad A., "Nano- and Micro-Scale Surface Modification of FCC Metal Using High Submerged Cavitating Water Jet" in Plasmonics, 8, no. 2 (2013):843-849,
https://doi.org/10.1007/s11468-013-9481-6 . .

TY  - CONF
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Ilić, Vojislav
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1002
AB  - The principal focus of this investigation were the effect of hydrodynamic and geometrical parameters on cavitating jet dynamic power and cavitation intensity under different flow conditions. Jet performance indicators were taken to be the erosion rate of the target surface and the size of the erosion area.. In addition, flow visualization was used as an additional tool to demonstrate the effect of dynamic power on the cavitating jet characteristics. The results show that the erosion rate can be used an indicator of the strength of the impinging jet to establish a correlation between the jet power and the pertinent experimental parameters. In addition, the importance of non-dimensional standoff distance was investigated and an analytical relationship established between it and the jet intensity. These expressions are proposed for calculating the efficiency of cavitating jets.
C3  - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
T1  - An experimental investigation of cavitating jet dynamic power and cavitation intensity
EP  - 351
IS  - PARTS A AND B
SP  - 343
VL  - 7
DO  - 10.1115/IMECE2010-37488
ER  - 

@conference{
author = "Hutli, Ezddin and Nedeljković, Miloš and Ilić, Vojislav",
year = "2010",
abstract = "The principal focus of this investigation were the effect of hydrodynamic and geometrical parameters on cavitating jet dynamic power and cavitation intensity under different flow conditions. Jet performance indicators were taken to be the erosion rate of the target surface and the size of the erosion area.. In addition, flow visualization was used as an additional tool to demonstrate the effect of dynamic power on the cavitating jet characteristics. The results show that the erosion rate can be used an indicator of the strength of the impinging jet to establish a correlation between the jet power and the pertinent experimental parameters. In addition, the importance of non-dimensional standoff distance was investigated and an analytical relationship established between it and the jet intensity. These expressions are proposed for calculating the efficiency of cavitating jets.",
journal = "ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)",
title = "An experimental investigation of cavitating jet dynamic power and cavitation intensity",
pages = "351-343",
number = "PARTS A AND B",
volume = "7",
doi = "10.1115/IMECE2010-37488"
}

Hutli, E., Nedeljković, M.,& Ilić, V.. (2010). An experimental investigation of cavitating jet dynamic power and cavitation intensity. in ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 7(PARTS A AND B), 343-351.
https://doi.org/10.1115/IMECE2010-37488

Hutli E, Nedeljković M, Ilić V. An experimental investigation of cavitating jet dynamic power and cavitation intensity. in ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). 2010;7(PARTS A AND B):343-351.
doi:10.1115/IMECE2010-37488 .

Hutli, Ezddin, Nedeljković, Miloš, Ilić, Vojislav, "An experimental investigation of cavitating jet dynamic power and cavitation intensity" in ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 7, no. PARTS A AND B (2010):343-351,
https://doi.org/10.1115/IMECE2010-37488 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Radović, Nenad A.
PY  - 2008
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/824
AB  - Experimental setup with a submerged cavitating jet has been used for the study of influences of material, exposure time and working fluid temperature on the erosion process. Each of the parameters has been varied separately, and the results of erosion are analyzed in detail. Additionally, comparison of experiments with nitrated and non-nitrated material has been made in order to study the enhancement (mostly reflected as the prolonged incubation time) of erosion resistance achieved by nitrating the specimen surface.
PB  - Springer, New York
T2  - Archive of Applied Mechanics
T1  - Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion
EP  - 341
IS  - 5
SP  - 329
VL  - 78
DO  - 10.1007/s00419-007-0163-8
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš and Radović, Nenad A.",
year = "2008",
abstract = "Experimental setup with a submerged cavitating jet has been used for the study of influences of material, exposure time and working fluid temperature on the erosion process. Each of the parameters has been varied separately, and the results of erosion are analyzed in detail. Additionally, comparison of experiments with nitrated and non-nitrated material has been made in order to study the enhancement (mostly reflected as the prolonged incubation time) of erosion resistance achieved by nitrating the specimen surface.",
publisher = "Springer, New York",
journal = "Archive of Applied Mechanics",
title = "Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion",
pages = "341-329",
number = "5",
volume = "78",
doi = "10.1007/s00419-007-0163-8"
}

Hutli, E., Nedeljković, M.,& Radović, N. A.. (2008). Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion. in Archive of Applied Mechanics
Springer, New York., 78(5), 329-341.
https://doi.org/10.1007/s00419-007-0163-8

Hutli E, Nedeljković M, Radović NA. Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion. in Archive of Applied Mechanics. 2008;78(5):329-341.
doi:10.1007/s00419-007-0163-8 .

Hutli, Ezddin, Nedeljković, Miloš, Radović, Nenad A., "Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion" in Archive of Applied Mechanics, 78, no. 5 (2008):329-341,
https://doi.org/10.1007/s00419-007-0163-8 . .

TY  - JOUR
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
PY  - 2008
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/838
AB  - Visualization of a highly submerged cavitating water jet was done by high-speed camera photography in order to study and understand the jet structure and the behavior of cloud cavitation within time and space. The influencing parameters, such as injection pressure, nozzle diameter and geometry, and nozzle direction (convergent and divergent), were experimentally proven to be very significant. Periodical shedding and discharging of cavitation clouds have been also analyzed and the corresponding frequency was determined by cloud shape analysis. Additionally, the dependence of this frequency on injection pressure and nozzle geometry has been analyzed and a simple formula of correspondence has been proposed. The formula has been tested on self-measured and literature data. The recordings of sonoluminescence phenomenon proved the bubble collapse everywhere along the jet.
PB  - ASME, New York
T2  - Journal of Fluids Engineering-Transactions of The Asme
T1  - Frequency in Shedding/Discharging cavitation clouds determined by visualization of a submerged cavitating jet
IS  - 2
VL  - 130
DO  - 10.1115/1.2813125
ER  - 

@article{
author = "Hutli, Ezddin and Nedeljković, Miloš",
year = "2008",
abstract = "Visualization of a highly submerged cavitating water jet was done by high-speed camera photography in order to study and understand the jet structure and the behavior of cloud cavitation within time and space. The influencing parameters, such as injection pressure, nozzle diameter and geometry, and nozzle direction (convergent and divergent), were experimentally proven to be very significant. Periodical shedding and discharging of cavitation clouds have been also analyzed and the corresponding frequency was determined by cloud shape analysis. Additionally, the dependence of this frequency on injection pressure and nozzle geometry has been analyzed and a simple formula of correspondence has been proposed. The formula has been tested on self-measured and literature data. The recordings of sonoluminescence phenomenon proved the bubble collapse everywhere along the jet.",
publisher = "ASME, New York",
journal = "Journal of Fluids Engineering-Transactions of The Asme",
title = "Frequency in Shedding/Discharging cavitation clouds determined by visualization of a submerged cavitating jet",
number = "2",
volume = "130",
doi = "10.1115/1.2813125"
}

Hutli, E.,& Nedeljković, M.. (2008). Frequency in Shedding/Discharging cavitation clouds determined by visualization of a submerged cavitating jet. in Journal of Fluids Engineering-Transactions of The Asme
ASME, New York., 130(2).
https://doi.org/10.1115/1.2813125

Hutli E, Nedeljković M. Frequency in Shedding/Discharging cavitation clouds determined by visualization of a submerged cavitating jet. in Journal of Fluids Engineering-Transactions of The Asme. 2008;130(2).
doi:10.1115/1.2813125 .

Hutli, Ezddin, Nedeljković, Miloš, "Frequency in Shedding/Discharging cavitation clouds determined by visualization of a submerged cavitating jet" in Journal of Fluids Engineering-Transactions of The Asme, 130, no. 2 (2008),
https://doi.org/10.1115/1.2813125 . .

TY  - CONF
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Ilić, V.
PY  - 2007
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/672
AB  - In order to study the jet structure and the behavior of cloud cavitation within time and space, visualization of highly submerged cavitating water jet has been done using 4-Quik-05 camera. This included obligatory synchronization technique and several types of lenses. The influencing parameters, such as: injection pressure, downstream pressure and cavitation number were experimentally proven to be very significant. The recordings of sono-luminescence phenomenon proved the bubble collapse everywhere along the jet trajectory. In addition, the effect of temperature on sono-luminescence was investigated.
C3  - Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC
T1  - Visualization of submerged cavitating jet: Part one -the phenomenon, time-synchronization, photo objectives and sono-luminescence
EP  - 880
SP  - 876
UR  - https://hdl.handle.net/21.15107/rcub_machinery_672
ER  - 

@conference{
author = "Hutli, Ezddin and Nedeljković, Miloš and Ilić, V.",
year = "2007",
abstract = "In order to study the jet structure and the behavior of cloud cavitation within time and space, visualization of highly submerged cavitating water jet has been done using 4-Quik-05 camera. This included obligatory synchronization technique and several types of lenses. The influencing parameters, such as: injection pressure, downstream pressure and cavitation number were experimentally proven to be very significant. The recordings of sono-luminescence phenomenon proved the bubble collapse everywhere along the jet trajectory. In addition, the effect of temperature on sono-luminescence was investigated.",
journal = "Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC",
title = "Visualization of submerged cavitating jet: Part one -the phenomenon, time-synchronization, photo objectives and sono-luminescence",
pages = "880-876",
url = "https://hdl.handle.net/21.15107/rcub_machinery_672"
}

Hutli, E., Nedeljković, M.,& Ilić, V.. (2007). Visualization of submerged cavitating jet: Part one -the phenomenon, time-synchronization, photo objectives and sono-luminescence. in Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC, 876-880.
https://hdl.handle.net/21.15107/rcub_machinery_672

Hutli E, Nedeljković M, Ilić V. Visualization of submerged cavitating jet: Part one -the phenomenon, time-synchronization, photo objectives and sono-luminescence. in Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC. 2007;:876-880.
https://hdl.handle.net/21.15107/rcub_machinery_672 .

Hutli, Ezddin, Nedeljković, Miloš, Ilić, V., "Visualization of submerged cavitating jet: Part one -the phenomenon, time-synchronization, photo objectives and sono-luminescence" in Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC (2007):876-880,
https://hdl.handle.net/21.15107/rcub_machinery_672 .

TY  - CONF
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
AU  - Ilić, V.
PY  - 2007
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/671
AB  - In visualization results of highly-submerged cavitating water jet obtained by a digital camera, the influence of parameters such as: injection pressure, nozzle diameter and geometry, nozzle mounting (for convergent / divergent flow), cavitation number and exit jet velocity, were investigated. In addition, the influence of visualization system position was studied. All the parameters have been found to be of strong influence on the jet appearance and performance.
C3  - Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC
T1  - Visualization of submerged cavitating jet: Part two - Influences of hydrodynamic conditions, nozzle geometry and visualization system arrangement
EP  - 886
SP  - 881
UR  - https://hdl.handle.net/21.15107/rcub_machinery_671
ER  - 

@conference{
author = "Hutli, Ezddin and Nedeljković, Miloš and Ilić, V.",
year = "2007",
abstract = "In visualization results of highly-submerged cavitating water jet obtained by a digital camera, the influence of parameters such as: injection pressure, nozzle diameter and geometry, nozzle mounting (for convergent / divergent flow), cavitation number and exit jet velocity, were investigated. In addition, the influence of visualization system position was studied. All the parameters have been found to be of strong influence on the jet appearance and performance.",
journal = "Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC",
title = "Visualization of submerged cavitating jet: Part two - Influences of hydrodynamic conditions, nozzle geometry and visualization system arrangement",
pages = "886-881",
url = "https://hdl.handle.net/21.15107/rcub_machinery_671"
}

Hutli, E., Nedeljković, M.,& Ilić, V.. (2007). Visualization of submerged cavitating jet: Part two - Influences of hydrodynamic conditions, nozzle geometry and visualization system arrangement. in Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC, 881-886.
https://hdl.handle.net/21.15107/rcub_machinery_671

Hutli E, Nedeljković M, Ilić V. Visualization of submerged cavitating jet: Part two - Influences of hydrodynamic conditions, nozzle geometry and visualization system arrangement. in Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC. 2007;:881-886.
https://hdl.handle.net/21.15107/rcub_machinery_671 .

Hutli, Ezddin, Nedeljković, Miloš, Ilić, V., "Visualization of submerged cavitating jet: Part two - Influences of hydrodynamic conditions, nozzle geometry and visualization system arrangement" in Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC (2007):881-886,
https://hdl.handle.net/21.15107/rcub_machinery_671 .

TY  - CONF
AU  - Hutli, Ezddin
AU  - Nedeljković, Miloš
PY  - 2007
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/704
AB  - Visualization of high-submerged cavitating water jet was done by a high-speed camera photography in order to study and understand the jet structure and the behaviour of cloud cavitation within the time and space. The influencing parameters, such as: injection pressure, nozzle diameter and geometry., nozzle direction (convergent and divergent) were experimentally proven to be very significant. Periodical shedding and discharging of cavitation clouds has been also analysed and corresponding frequency was determined by clouds shape analysis. Additionally, dependence of this frequency on injection pressure and nozzle geometry has been analysed and a simple formula of correspondence has been proposed. The formula has been tested on self-measured and literature data.
PB  - Tsinghua University Press, Beijing
C3  - New Trends in Fluid Mechanics Research: Proceedings of The Fifth International Conference on Fluid M
T1  - Formula for upstream pressure, nozzle geometry and frequency correlation in shedding/discharging cavitation clouds determined by visualization of submerged cavitating jet
EP  - 197
SP  - 194
DO  - 10.1007/978-3-540-75995-9_58
ER  - 

@conference{
author = "Hutli, Ezddin and Nedeljković, Miloš",
year = "2007",
abstract = "Visualization of high-submerged cavitating water jet was done by a high-speed camera photography in order to study and understand the jet structure and the behaviour of cloud cavitation within the time and space. The influencing parameters, such as: injection pressure, nozzle diameter and geometry., nozzle direction (convergent and divergent) were experimentally proven to be very significant. Periodical shedding and discharging of cavitation clouds has been also analysed and corresponding frequency was determined by clouds shape analysis. Additionally, dependence of this frequency on injection pressure and nozzle geometry has been analysed and a simple formula of correspondence has been proposed. The formula has been tested on self-measured and literature data.",
publisher = "Tsinghua University Press, Beijing",
journal = "New Trends in Fluid Mechanics Research: Proceedings of The Fifth International Conference on Fluid M",
title = "Formula for upstream pressure, nozzle geometry and frequency correlation in shedding/discharging cavitation clouds determined by visualization of submerged cavitating jet",
pages = "197-194",
doi = "10.1007/978-3-540-75995-9_58"
}

Hutli, E.,& Nedeljković, M.. (2007). Formula for upstream pressure, nozzle geometry and frequency correlation in shedding/discharging cavitation clouds determined by visualization of submerged cavitating jet. in New Trends in Fluid Mechanics Research: Proceedings of The Fifth International Conference on Fluid M
Tsinghua University Press, Beijing., 194-197.
https://doi.org/10.1007/978-3-540-75995-9_58

Hutli E, Nedeljković M. Formula for upstream pressure, nozzle geometry and frequency correlation in shedding/discharging cavitation clouds determined by visualization of submerged cavitating jet. in New Trends in Fluid Mechanics Research: Proceedings of The Fifth International Conference on Fluid M. 2007;:194-197.
doi:10.1007/978-3-540-75995-9_58 .

Hutli, Ezddin, Nedeljković, Miloš, "Formula for upstream pressure, nozzle geometry and frequency correlation in shedding/discharging cavitation clouds determined by visualization of submerged cavitating jet" in New Trends in Fluid Mechanics Research: Proceedings of The Fifth International Conference on Fluid M (2007):194-197,
https://doi.org/10.1007/978-3-540-75995-9_58 . .