Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves

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KARADŽIĆ, Uroš ;JANKOVIĆ, Marko ;STRUNJAŠ, Filip ;BERGANT, Anton .
Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves. 
Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 64, n.9, p. 525-535, october 2018. 
ISSN 0039-2480.
Available at: <https://www.sv-jme.eu/article/water-hammer-and-column-separation-induced-by-simultaneous-and-delayed-closure-of-two-valves/>. Date accessed: 18 jun. 2019. 
doi:http://dx.doi.org/10.5545/sv-jme.2017.4993.
Karadžić, U., Janković, M., Strunjaš, F., & Bergant, A.
(2018).
Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves.
Strojniški vestnik - Journal of Mechanical Engineering, 64(9), 525-535.
doi:http://dx.doi.org/10.5545/sv-jme.2017.4993
@article{sv-jmesv-jme.2017.4993,
	author = {Uroš  Karadžić and Marko  Janković and Filip  Strunjaš and Anton  Bergant},
	title = {Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {64},
	number = {9},
	year = {2018},
	keywords = {pipeline, two valves, simultaneous and delayed valve closure, water hammer, column separation, experimental setup, unsteady friction.},
	abstract = {Water hammer and column separation induced by simultaneous and sequential (delayed) closure of two valves may occur in industrial pipeline systems. This paper deals with such cases both experimentally and numerically. Water hammer equations are solved by the method of characteristics. Transient cavitating pipe flow is simulated by a discrete gas cavity model (DGCM) that considers unsteady skin friction. Discrete gas cavities and Zielke’s convolution-based unsteady skin friction term are explicitly incorporated in the staggered grid algorithm of the method of characteristics. Experiments have been performed in a laboratory pipeline apparatus. The apparatus consists of an upstream end tank, a horizontal steel pipeline (total length 55.37 m, inner diameter 18 mm), four valve units positioned along the pipeline including the end points, and a downstream end tank. A transient event is induced either by simultaneous or sequential closure of two end valves. Numerical results are compared and verified with results of measurements. In addition, a theoretical analysis of pressure wave fronts travelling along the pipeline is also presented to clearly show profound effects of wave interactions.},
	issn = {0039-2480},	pages = {525-535},	doi = {10.5545/sv-jme.2017.4993},
	url = {https://www.sv-jme.eu/article/water-hammer-and-column-separation-induced-by-simultaneous-and-delayed-closure-of-two-valves/}
}
Karadžić, U.,Janković, M.,Strunjaš, F.,Bergant, A.
2018 October 64. Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 64:9
%A Karadžić, Uroš 
%A Janković, Marko 
%A Strunjaš, Filip 
%A Bergant, Anton 
%D 2018
%T Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves
%B 2018
%9 pipeline, two valves, simultaneous and delayed valve closure, water hammer, column separation, experimental setup, unsteady friction.
%! Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves
%K pipeline, two valves, simultaneous and delayed valve closure, water hammer, column separation, experimental setup, unsteady friction.
%X Water hammer and column separation induced by simultaneous and sequential (delayed) closure of two valves may occur in industrial pipeline systems. This paper deals with such cases both experimentally and numerically. Water hammer equations are solved by the method of characteristics. Transient cavitating pipe flow is simulated by a discrete gas cavity model (DGCM) that considers unsteady skin friction. Discrete gas cavities and Zielke’s convolution-based unsteady skin friction term are explicitly incorporated in the staggered grid algorithm of the method of characteristics. Experiments have been performed in a laboratory pipeline apparatus. The apparatus consists of an upstream end tank, a horizontal steel pipeline (total length 55.37 m, inner diameter 18 mm), four valve units positioned along the pipeline including the end points, and a downstream end tank. A transient event is induced either by simultaneous or sequential closure of two end valves. Numerical results are compared and verified with results of measurements. In addition, a theoretical analysis of pressure wave fronts travelling along the pipeline is also presented to clearly show profound effects of wave interactions.
%U https://www.sv-jme.eu/article/water-hammer-and-column-separation-induced-by-simultaneous-and-delayed-closure-of-two-valves/
%0 Journal Article
%R 10.5545/sv-jme.2017.4993
%& 525
%P 11
%J Strojniški vestnik - Journal of Mechanical Engineering
%V 64
%N 9
%@ 0039-2480
%8 2018-10-11
%7 2018-10-11
Karadžić, Uroš, Marko  Janković, Filip  Strunjaš, & Anton  Bergant.
"Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves." Strojniški vestnik - Journal of Mechanical Engineering [Online], 64.9 (2018): 525-535. Web.  18 Jun. 2019
TY  - JOUR
AU  - Karadžić, Uroš 
AU  - Janković, Marko 
AU  - Strunjaš, Filip 
AU  - Bergant, Anton 
PY  - 2018
TI  - Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves
JF  - Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2017.4993
KW  - pipeline, two valves, simultaneous and delayed valve closure, water hammer, column separation, experimental setup, unsteady friction.
N2  - Water hammer and column separation induced by simultaneous and sequential (delayed) closure of two valves may occur in industrial pipeline systems. This paper deals with such cases both experimentally and numerically. Water hammer equations are solved by the method of characteristics. Transient cavitating pipe flow is simulated by a discrete gas cavity model (DGCM) that considers unsteady skin friction. Discrete gas cavities and Zielke’s convolution-based unsteady skin friction term are explicitly incorporated in the staggered grid algorithm of the method of characteristics. Experiments have been performed in a laboratory pipeline apparatus. The apparatus consists of an upstream end tank, a horizontal steel pipeline (total length 55.37 m, inner diameter 18 mm), four valve units positioned along the pipeline including the end points, and a downstream end tank. A transient event is induced either by simultaneous or sequential closure of two end valves. Numerical results are compared and verified with results of measurements. In addition, a theoretical analysis of pressure wave fronts travelling along the pipeline is also presented to clearly show profound effects of wave interactions.
UR  - https://www.sv-jme.eu/article/water-hammer-and-column-separation-induced-by-simultaneous-and-delayed-closure-of-two-valves/
@article{{sv-jme}{sv-jme.2017.4993},
	author = {Karadžić, U., Janković, M., Strunjaš, F., Bergant, A.},
	title = {Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves},
	journal = {Strojniški vestnik - Journal of Mechanical Engineering},
	volume = {64},
	number = {9},
	year = {2018},
	doi = {10.5545/sv-jme.2017.4993},
	url = {https://www.sv-jme.eu/article/water-hammer-and-column-separation-induced-by-simultaneous-and-delayed-closure-of-two-valves/}
}
TY  - JOUR
AU  - Karadžić, Uroš 
AU  - Janković, Marko 
AU  - Strunjaš, Filip 
AU  - Bergant, Anton 
PY  - 2018/10/11
TI  - Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves
JF  - Strojniški vestnik - Journal of Mechanical Engineering; Vol 64, No 9 (2018): Strojniški vestnik - Journal of Mechanical Engineering
DO  - 10.5545/sv-jme.2017.4993
KW  - pipeline, two valves, simultaneous and delayed valve closure, water hammer, column separation, experimental setup, unsteady friction.
N2  - Water hammer and column separation induced by simultaneous and sequential (delayed) closure of two valves may occur in industrial pipeline systems. This paper deals with such cases both experimentally and numerically. Water hammer equations are solved by the method of characteristics. Transient cavitating pipe flow is simulated by a discrete gas cavity model (DGCM) that considers unsteady skin friction. Discrete gas cavities and Zielke’s convolution-based unsteady skin friction term are explicitly incorporated in the staggered grid algorithm of the method of characteristics. Experiments have been performed in a laboratory pipeline apparatus. The apparatus consists of an upstream end tank, a horizontal steel pipeline (total length 55.37 m, inner diameter 18 mm), four valve units positioned along the pipeline including the end points, and a downstream end tank. A transient event is induced either by simultaneous or sequential closure of two end valves. Numerical results are compared and verified with results of measurements. In addition, a theoretical analysis of pressure wave fronts travelling along the pipeline is also presented to clearly show profound effects of wave interactions.
UR  - https://www.sv-jme.eu/article/water-hammer-and-column-separation-induced-by-simultaneous-and-delayed-closure-of-two-valves/
Karadžić, Uroš, Janković, Marko, Strunjaš, Filip, AND Bergant, Anton.
"Water Hammer and Column Separation Induced by Simultaneous and Delayed Closure of Two Valves" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 64 Number 9 (11 October 2018)

Authors

Affiliations

  • University of Montenegro, Faculty of Mechanical Engineering, Montenegro
  • Electric Power Supply Company, Montenegro
  • Kone, Montenegro
  • Litostroj Power, Slovenia

Paper's information

Strojniški vestnik - Journal of Mechanical Engineering 64(2018)9, 525-535

10.5545/sv-jme.2017.4993

Water hammer and column separation induced by simultaneous and sequential (delayed) closure of two valves may occur in industrial pipeline systems. This paper deals with such cases both experimentally and numerically. Water hammer equations are solved by the method of characteristics. Transient cavitating pipe flow is simulated by a discrete gas cavity model (DGCM) that considers unsteady skin friction. Discrete gas cavities and Zielke’s convolution-based unsteady skin friction term are explicitly incorporated in the staggered grid algorithm of the method of characteristics. Experiments have been performed in a laboratory pipeline apparatus. The apparatus consists of an upstream end tank, a horizontal steel pipeline (total length 55.37 m, inner diameter 18 mm), four valve units positioned along the pipeline including the end points, and a downstream end tank. A transient event is induced either by simultaneous or sequential closure of two end valves. Numerical results are compared and verified with results of measurements. In addition, a theoretical analysis of pressure wave fronts travelling along the pipeline is also presented to clearly show profound effects of wave interactions.

pipeline, two valves, simultaneous and delayed valve closure, water hammer, column separation, experimental setup, unsteady friction.