TY  - JOUR
AU  - Božić, Ivan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3495
AB  - Energy losses in the region between the runner and outlet section of a conventional hydraulic turbine have been the subject of investigation for a long time. In this paper as well, elbow draft tube losses are determined for the relevant wide range on-cam operating modes of the Kaplan turbine using a contemporary approach. The research considers the impact of swirl flow parameters, defined for the referent inlet of the draft tube, on the hydraulic losses. According to the methodology and obtained numerical results, a new formula for the calculation of draft tube losses is proposed. In the process of a hydropower plant refurbishment, the presented approach may enable more efficient and economically justified consideration of the performance improvement of the entire double regulated hydraulic turbine, especially in the case of keeping the existing elbow draft tube.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Renewable Energy
T1  - A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine
EP  - 558
SP  - 550
VL  - 175
DO  - 10.1016/j.renene.2021.05.014
ER  - 

@article{
author = "Božić, Ivan",
year = "2021",
abstract = "Energy losses in the region between the runner and outlet section of a conventional hydraulic turbine have been the subject of investigation for a long time. In this paper as well, elbow draft tube losses are determined for the relevant wide range on-cam operating modes of the Kaplan turbine using a contemporary approach. The research considers the impact of swirl flow parameters, defined for the referent inlet of the draft tube, on the hydraulic losses. According to the methodology and obtained numerical results, a new formula for the calculation of draft tube losses is proposed. In the process of a hydropower plant refurbishment, the presented approach may enable more efficient and economically justified consideration of the performance improvement of the entire double regulated hydraulic turbine, especially in the case of keeping the existing elbow draft tube.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Renewable Energy",
title = "A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine",
pages = "558-550",
volume = "175",
doi = "10.1016/j.renene.2021.05.014"
}

Božić, I.. (2021). A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine. in Renewable Energy
Pergamon-Elsevier Science Ltd, Oxford., 175, 550-558.
https://doi.org/10.1016/j.renene.2021.05.014

Božić I. A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine. in Renewable Energy. 2021;175:550-558.
doi:10.1016/j.renene.2021.05.014 .

Božić, Ivan, "A novel energy losses dependence on integral swirl flow parameters in an elbow draft tube of a Kaplan turbine" in Renewable Energy, 175 (2021):550-558,
https://doi.org/10.1016/j.renene.2021.05.014 . .

TY  - JOUR
AU  - Božić, Ivan
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2533
AB  - Hydraulic losses in the region between the guide vanes and runner of a Kaplan turbine are commonly either neglected or considered a part of the total guide vanes losses. This paper focuses on the determination of these losses for a relevant range of operating modes of the Kaplan turbine model. The research was performed by numerical simulations using two turbulence models, wherein some of the results were validated by the available experimental data. The impact of swirl flow parameters, defined for referent inlet of the researched vaneless passage, on the hydraulic losses was considered. Based on the numerical and experimental results, a novel formula for determination of these losses is proposed. The contribution of the studied losses to the total turbine losses is also identified.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Hydraulic Research
T1  - Determination of hydraulic losses in the flow passage between the guide vanes and runner of the Kaplan turbine
EP  - 361
IS  - 3
SP  - 349
VL  - 55
DO  - 10.1080/00221686.2016.1250831
ER  - 

@article{
author = "Božić, Ivan",
year = "2017",
abstract = "Hydraulic losses in the region between the guide vanes and runner of a Kaplan turbine are commonly either neglected or considered a part of the total guide vanes losses. This paper focuses on the determination of these losses for a relevant range of operating modes of the Kaplan turbine model. The research was performed by numerical simulations using two turbulence models, wherein some of the results were validated by the available experimental data. The impact of swirl flow parameters, defined for referent inlet of the researched vaneless passage, on the hydraulic losses was considered. Based on the numerical and experimental results, a novel formula for determination of these losses is proposed. The contribution of the studied losses to the total turbine losses is also identified.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Hydraulic Research",
title = "Determination of hydraulic losses in the flow passage between the guide vanes and runner of the Kaplan turbine",
pages = "361-349",
number = "3",
volume = "55",
doi = "10.1080/00221686.2016.1250831"
}

Božić, I.. (2017). Determination of hydraulic losses in the flow passage between the guide vanes and runner of the Kaplan turbine. in Journal of Hydraulic Research
Taylor & Francis Ltd, Abingdon., 55(3), 349-361.
https://doi.org/10.1080/00221686.2016.1250831

Božić I. Determination of hydraulic losses in the flow passage between the guide vanes and runner of the Kaplan turbine. in Journal of Hydraulic Research. 2017;55(3):349-361.
doi:10.1080/00221686.2016.1250831 .

Božić, Ivan, "Determination of hydraulic losses in the flow passage between the guide vanes and runner of the Kaplan turbine" in Journal of Hydraulic Research, 55, no. 3 (2017):349-361,
https://doi.org/10.1080/00221686.2016.1250831 . .

TY  - JOUR
AU  - Božić, Ivan
AU  - Benišek, Miroslav
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2487
AB  - Secondary losses, which occur during the energy transfer process in axial turbomachinery, have been the subject of investigation for a long time. So far, much more attention has been naturally paid to the research of the phenomenon in gas and steam turbines than in hydraulic turbines. In the paper, the profile and secondary energy losses in the Kaplan turbine runner were considered by the comprehensive numerical simulations using two turbulence models and by the available experimental data of the blade profiles' characteristics. The performed research provides a contribution to better determination of secondary losses in the engineering practice, its distributions and participations in the total turbine losses for a wide range of on-cam operating modes. According to the proposed methodology and the obtained results, the improvement of the existing formula has been done thus enabling more accurate quantifying of secondary losses in the runner of the axial hydraulic turbine.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Renewable Energy
T1  - An improved formula for determination of secondary energy losses in the runner of Kaplan turbine
EP  - 546
SP  - 537
VL  - 94
DO  - 10.1016/j.renene.2016.03.093
ER  - 

@article{
author = "Božić, Ivan and Benišek, Miroslav",
year = "2016",
abstract = "Secondary losses, which occur during the energy transfer process in axial turbomachinery, have been the subject of investigation for a long time. So far, much more attention has been naturally paid to the research of the phenomenon in gas and steam turbines than in hydraulic turbines. In the paper, the profile and secondary energy losses in the Kaplan turbine runner were considered by the comprehensive numerical simulations using two turbulence models and by the available experimental data of the blade profiles' characteristics. The performed research provides a contribution to better determination of secondary losses in the engineering practice, its distributions and participations in the total turbine losses for a wide range of on-cam operating modes. According to the proposed methodology and the obtained results, the improvement of the existing formula has been done thus enabling more accurate quantifying of secondary losses in the runner of the axial hydraulic turbine.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Renewable Energy",
title = "An improved formula for determination of secondary energy losses in the runner of Kaplan turbine",
pages = "546-537",
volume = "94",
doi = "10.1016/j.renene.2016.03.093"
}

Božić, I.,& Benišek, M.. (2016). An improved formula for determination of secondary energy losses in the runner of Kaplan turbine. in Renewable Energy
Pergamon-Elsevier Science Ltd, Oxford., 94, 537-546.
https://doi.org/10.1016/j.renene.2016.03.093

Božić I, Benišek M. An improved formula for determination of secondary energy losses in the runner of Kaplan turbine. in Renewable Energy. 2016;94:537-546.
doi:10.1016/j.renene.2016.03.093 .

Božić, Ivan, Benišek, Miroslav, "An improved formula for determination of secondary energy losses in the runner of Kaplan turbine" in Renewable Energy, 94 (2016):537-546,
https://doi.org/10.1016/j.renene.2016.03.093 . .