Experimental study on the influence of geometrical parameters on the cavitation erosion characteristics of high speed submerged jets
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 b...ased 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.
Keywords:
Nozzle / Jet / Erosion / Cavity / Cavitation cloudSource:
Experimental Thermal and Fluid Science, 2017, 80, 281-292Publisher:
- Elsevier Science Inc, New York
Funding / projects:
- Application of Novel Measurement and Computational Techniques on Investigation of Air Flow in Ventilation Systems of Energy Extremely Efficient (“Passive”) Buildings (RS-MESTD-Technological Development (TD or TR)-35046)
- Janos Bolyai Scholarship
DOI: 10.1016/j.expthermflusci.2016.08.026
ISSN: 0894-1777
WoS: 000385606100025
Scopus: 2-s2.0-84986593143
Collections
Institution/Community
Mašinski fakultetTY - 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 . .