Numerical Simulation of Water Hammer in Pipeline System Using Efficient Wave Tracking Method

Zhang, Qianping; Tian, Zhilong; Lu, Shuaijie; Kang, Huilun

doi:10.1007/s11269-023-03482-4

Water Resour Manage

2023

DOI: 10.1007/s11269-023-03482-4

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Numerical Simulation of Water Hammer in Pipeline System Using Efficient Wave Tracking Method

Qianping Zhang

Zhilong Tian

Shuaijie Lu

et al.

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Cited by 5 publications

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Initial Investigation of Wave Interactions During Simultaneous Valve Closures in Hydraulic Piping Systems

Urbanowicz,

Haluch,

Bergant

et al. 2023

Water Resour Manage

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The effects of interference of pressure waves in simple piping systems were studied. A freeware computer code Allievi developed at the University of Valencia was used to simulate dynamic waveforms in simple and complex networks. The tests were carried out according to three scenarios. No pressure increases significantly exceeding the Joukowsky pressure in simple cases were noticed. When the effects of the simultaneous closing of three valves located at the three pressure reservoirs with pipes of the same diameter connected at "Y" junction were tested, it was shown that wave interference (between primary and reflected waves) is influenced strongly by the length of the analyzed pipes. Additionally, when a change of diameter was assumed at the "Y" junction, secondary waves appear, which are responsible for increased pressure in this type of the system (even when the lengths of the lines are identical). Water supply pipe systems are subject to cyclical loads and wave interference of similar types even during standard operations, that’s why the understanding of this issue is crucial to effectively protect the systems from the risk of possible cracks, bursts, and leaks.

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Initial Investigation of Wave Interactions During Simultaneous Valve Closures in Hydraulic Piping Systems

Urbanowicz,

Haluch,

Bergant

et al. 2023

Water Resour Manage

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Effect of Air Vessel Configuration on Transient Pressure

Darweesh,

Ahmed

2024

Water Resour Manage

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Hydropneumatic tanks can effectively safeguard pressurized systems from the risk of water hammer. This paper examines the in uence of both air vessel aspect ratio (R = height/diameter) and its form; cylindrical (vertical and horizontal) and spherical, on the transient pressures resulting from the abnormal working events of pumps. Bentley HAMMER software, which uses the Method of Characteristics to solve the momentum and continuity equations for unsteady ow, was foremost veri ed and then utilized in the analysis. Three case studies were considered. The results show that, for the same operating conditions, R has an insigni cant effect on the maximum and minimum pressures, and as R increases, the extreme pressures improve slightly. Furthermore, the hydraulic performance of horizontal cylindrical, vertical cylindrical, and spherical air vessels, under transient conditions and at the same volume, is identical and the small differences in the transient results could be attributed to the change in pressure of air/gas inside the vessel that results from the variance in the vessel's cross-sectional area.

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Hybrid method for hydraulic transient analysis of liquid pipe networks based on characteristic lines and equivalent circuits

Liu,

Gong,

Shi

et al. 2024

Geoenergy Science and Engineering

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Numerical Simulation of Water Hammer in Pipeline System Using Efficient Wave Tracking Method

Cited by 5 publications

References 20 publications

Initial Investigation of Wave Interactions During Simultaneous Valve Closures in Hydraulic Piping Systems

Initial Investigation of Wave Interactions During Simultaneous Valve Closures in Hydraulic Piping Systems

Effect of Air Vessel Configuration on Transient Pressure

Hybrid method for hydraulic transient analysis of liquid pipe networks based on characteristic lines and equivalent circuits

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