Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows

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KARADŽIĆ, Uroš ;BERGANT, Anton ;STARINAC, Danica ;BOŽOVIĆ, Boško .
Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 65, n.7-8, p. 430-440, july 2019. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/water-hammer-investigation-of-shut-down-of-high-head-hydropower-plant-at-very-high-reynolds-number-flows/>. Date accessed: 19 sep. 2021. 
doi:http://dx.doi.org/10.5545/sv-jme.2019.6092.
Karadžić, U., Bergant, A., Starinac, D., & Božović, B.
(2019).
Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows.
Strojniški vestnik - Journal of Mechanical Engineering, 65(7-8), 430-440.
doi:http://dx.doi.org/10.5545/sv-jme.2019.6092
@article{sv-jmesv-jme.2019.6092,
	author = {Uroš  Karadžić and Anton  Bergant and Danica  Starinac and Boško  Božović},
	title = {Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {7-8},
	year = {2019},
	keywords = {water hammer, high-head hydropower plant, Pelton turbine, emergency shut-down, high Reynolds number},
	abstract = {This paper investigates water hammer phenomena in a refurbished high-head hydropower plant (HPP) Perućica, Montenegro during shut-down of the entire plant (i.e., the simultaneous closure of the seven Pelton turbine units). An in-situ measuring campaign during a number of steady and unsteady conditions has been performed on the plant’s open channel, pressurized and tail race sub-systems with the primary goal of defining measures that will enable the achievement of the plant’s installed capacity. In-house software written in Visual Fortran and based on the method of characteristics (MOC) has been developed. The closure of the Pelton turbine distributors is modelled with the two-speed closing law. Dissipation torques in the turbine housing and shaft bearings are considered in the calculation of the Pelton turbine unit rotational speed change. Numerical results given for standard quasi-steady and convolution-based unsteady friction models are compared with the results of measurements at flows with very high initial Reynolds numbers (larger than 10^7). The developed numerical model shows good agreement with the results of site measurements. It is shown that the unsteady friction has a small impact on pressure histories in Perućica HPP.},
	issn = {0039-2480},	pages = {430-440},	doi = {10.5545/sv-jme.2019.6092},
	url = {https://www.sv-jme.eu/article/water-hammer-investigation-of-shut-down-of-high-head-hydropower-plant-at-very-high-reynolds-number-flows/}
}
Karadžić, U.,Bergant, A.,Starinac, D.,Božović, B.
2019 July 65. Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 65:7-8
%A Karadžić, Uroš 
%A Bergant, Anton 
%A Starinac, Danica 
%A Božović, Boško 
%D 2019
%T Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows
%B 2019
%9 water hammer, high-head hydropower plant, Pelton turbine, emergency shut-down, high Reynolds number
%! Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows
%K water hammer, high-head hydropower plant, Pelton turbine, emergency shut-down, high Reynolds number
%X This paper investigates water hammer phenomena in a refurbished high-head hydropower plant (HPP) Perućica, Montenegro during shut-down of the entire plant (i.e., the simultaneous closure of the seven Pelton turbine units). An in-situ measuring campaign during a number of steady and unsteady conditions has been performed on the plant’s open channel, pressurized and tail race sub-systems with the primary goal of defining measures that will enable the achievement of the plant’s installed capacity. In-house software written in Visual Fortran and based on the method of characteristics (MOC) has been developed. The closure of the Pelton turbine distributors is modelled with the two-speed closing law. Dissipation torques in the turbine housing and shaft bearings are considered in the calculation of the Pelton turbine unit rotational speed change. Numerical results given for standard quasi-steady and convolution-based unsteady friction models are compared with the results of measurements at flows with very high initial Reynolds numbers (larger than 10^7). The developed numerical model shows good agreement with the results of site measurements. It is shown that the unsteady friction has a small impact on pressure histories in Perućica HPP.
%U https://www.sv-jme.eu/article/water-hammer-investigation-of-shut-down-of-high-head-hydropower-plant-at-very-high-reynolds-number-flows/
%0 Journal Article
%R 10.5545/sv-jme.2019.6092
%& 430
%P 11
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 65
%N 7-8
%@ 0039-2480
%8 2019-07-19
%7 2019-07-19
Karadžić, Uroš, Anton  Bergant, Danica  Starinac, & Boško  Božović.
"Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows." Strojniški vestnik - Journal of Mechanical Engineering [Online], 65.7-8 (2019): 430-440. Web.  19 Sep. 2021
TY  - JOUR
AU  - Karadžić, Uroš 
AU  - Bergant, Anton 
AU  - Starinac, Danica 
AU  - Božović, Boško 
PY  - 2019
TI  - Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6092
KW  - water hammer, high-head hydropower plant, Pelton turbine, emergency shut-down, high Reynolds number
N2  - This paper investigates water hammer phenomena in a refurbished high-head hydropower plant (HPP) Perućica, Montenegro during shut-down of the entire plant (i.e., the simultaneous closure of the seven Pelton turbine units). An in-situ measuring campaign during a number of steady and unsteady conditions has been performed on the plant’s open channel, pressurized and tail race sub-systems with the primary goal of defining measures that will enable the achievement of the plant’s installed capacity. In-house software written in Visual Fortran and based on the method of characteristics (MOC) has been developed. The closure of the Pelton turbine distributors is modelled with the two-speed closing law. Dissipation torques in the turbine housing and shaft bearings are considered in the calculation of the Pelton turbine unit rotational speed change. Numerical results given for standard quasi-steady and convolution-based unsteady friction models are compared with the results of measurements at flows with very high initial Reynolds numbers (larger than 10^7). The developed numerical model shows good agreement with the results of site measurements. It is shown that the unsteady friction has a small impact on pressure histories in Perućica HPP.
UR  - https://www.sv-jme.eu/article/water-hammer-investigation-of-shut-down-of-high-head-hydropower-plant-at-very-high-reynolds-number-flows/
@article{{sv-jme}{sv-jme.2019.6092},
	author = {Karadžić, U., Bergant, A., Starinac, D., Božović, B.},
	title = {Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {65},
	number = {7-8},
	year = {2019},
	doi = {10.5545/sv-jme.2019.6092},
	url = {https://www.sv-jme.eu/article/water-hammer-investigation-of-shut-down-of-high-head-hydropower-plant-at-very-high-reynolds-number-flows/}
}
TY  - JOUR
AU  - Karadžić, Uroš 
AU  - Bergant, Anton 
AU  - Starinac, Danica 
AU  - Božović, Boško 
PY  - 2019/07/19
TI  - Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 65, No 7-8 (2019): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2019.6092
KW  - water hammer, high-head hydropower plant, Pelton turbine, emergency shut-down, high Reynolds number
N2  - This paper investigates water hammer phenomena in a refurbished high-head hydropower plant (HPP) Perućica, Montenegro during shut-down of the entire plant (i.e., the simultaneous closure of the seven Pelton turbine units). An in-situ measuring campaign during a number of steady and unsteady conditions has been performed on the plant’s open channel, pressurized and tail race sub-systems with the primary goal of defining measures that will enable the achievement of the plant’s installed capacity. In-house software written in Visual Fortran and based on the method of characteristics (MOC) has been developed. The closure of the Pelton turbine distributors is modelled with the two-speed closing law. Dissipation torques in the turbine housing and shaft bearings are considered in the calculation of the Pelton turbine unit rotational speed change. Numerical results given for standard quasi-steady and convolution-based unsteady friction models are compared with the results of measurements at flows with very high initial Reynolds numbers (larger than 10^7). The developed numerical model shows good agreement with the results of site measurements. It is shown that the unsteady friction has a small impact on pressure histories in Perućica HPP.
UR  - https://www.sv-jme.eu/article/water-hammer-investigation-of-shut-down-of-high-head-hydropower-plant-at-very-high-reynolds-number-flows/
Karadžić, Uroš, Bergant, Anton, Starinac, Danica, AND Božović, Boško.
"Water Hammer Investigation of the Shut-Down of a High-Head Hydropower Plant at Very High Reynolds Number Flows" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 65 Number 7-8 (19 July 2019)

Authors

Affiliations

  • University of Montenegro, Faculty of Mechanical Engineering, Montenegro 1
  • Litostroj Power d.o.o., Slovenia 2
  • Jaroslav Černi Institute, Serbia 3
  • Electric Power Supply Company, Montenegro 4

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 65(2019)7-8, 430-440

https://doi.org/10.5545/sv-jme.2019.6092

This paper investigates water hammer phenomena in a refurbished high-head hydropower plant (HPP) Perućica, Montenegro during shut-down of the entire plant (i.e., the simultaneous closure of the seven Pelton turbine units). An in-situ measuring campaign during a number of steady and unsteady conditions has been performed on the plant’s open channel, pressurized and tail race sub-systems with the primary goal of defining measures that will enable the achievement of the plant’s installed capacity. In-house software written in Visual Fortran and based on the method of characteristics (MOC) has been developed. The closure of the Pelton turbine distributors is modelled with the two-speed closing law. Dissipation torques in the turbine housing and shaft bearings are considered in the calculation of the Pelton turbine unit rotational speed change. Numerical results given for standard quasi-steady and convolution-based unsteady friction models are compared with the results of measurements at flows with very high initial Reynolds numbers (larger than 10^7). The developed numerical model shows good agreement with the results of site measurements. It is shown that the unsteady friction has a small impact on pressure histories in Perućica HPP.

water hammer, high-head hydropower plant, Pelton turbine, emergency shut-down, high Reynolds number