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Article

Water Hammer Simulation Method in Pressurized Pipeline with a Moving Isolation Device

1
College of Naval Architecture and Ocean Engineering, Dalian Maritime University, Dalian 116026, China
2
School of Civil, Environmental and Mining Engineering, University of Adelaide, Adelaide, SA 5005, Australia
3
College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China
4
Power China Kunming Engineering Corporation Limited, Kunming 650051, China
*
Author to whom correspondence should be addressed.
Academic Editor: Francesco Gallerano
Water 2021, 13(13), 1794; https://doi.org/10.3390/w13131794
Received: 28 May 2021 / Revised: 23 June 2021 / Accepted: 28 June 2021 / Published: 29 June 2021
Smart isolation devices (SIDs) are commonly used in pressurized subsea pipelines that need to be maintained or repaired. The sudden stoppage of the SID may cause large water hammer pressures, which may threaten both the pipeline and the SID. This paper proposes a simulation method by using a coupled dynamic mesh technique to simulate water hammer pressures in the pipeline. Unlike other water hammer simulations, this method is the first to be used in the simulation in pipelines with a moving object. The implicit method is applied to model the moving SID since it has the mutual independence between the space step and the time step. The movement of the SID is achieved by updating the size of the computational meshes close to the SID at each time step. To improve the efficiency of the simulation and the ability of handling complex boundary conditions, the pipe sections far away from the SID can also be simulated by using the explicit Method of Characteristics (MOC). Verifications were conducted using the simulated results from the Computational Fluid Dynamics (CFD) numerical simulation. Two scenarios have been studied and the comparisons between the simulated results by using the dynamic meshes in 1D methods and those by the CFD simulation show a high correlation, thus validating the new method proposed in this paper. View Full-Text
Keywords: hydraulic transient; water hammer simulation; dynamic mesh; subsea pressurized pipeline hydraulic transient; water hammer simulation; dynamic mesh; subsea pressurized pipeline
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MDPI and ACS Style

Zhang, K.; Zeng, W.; Simpson, A.R.; Zhang, S.; Wang, C. Water Hammer Simulation Method in Pressurized Pipeline with a Moving Isolation Device. Water 2021, 13, 1794. https://doi.org/10.3390/w13131794

AMA Style

Zhang K, Zeng W, Simpson AR, Zhang S, Wang C. Water Hammer Simulation Method in Pressurized Pipeline with a Moving Isolation Device. Water. 2021; 13(13):1794. https://doi.org/10.3390/w13131794

Chicago/Turabian Style

Zhang, Kang, Wei Zeng, Angus R. Simpson, Shimin Zhang, and Chao Wang. 2021. "Water Hammer Simulation Method in Pressurized Pipeline with a Moving Isolation Device" Water 13, no. 13: 1794. https://doi.org/10.3390/w13131794

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