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Effect of Air Vessel Configuration on Transient Pressure

Author

Listed:
  • Moustafa S. Darweesh

    (Northern Border University
    Assiut University)

  • Anwar A. Ahmed

    (Northern Border University
    Nyala University)

Abstract

Hydropneumatic tanks can effectively safeguard pressurized systems from water hammer. In this paper, the influences of the air vessel aspect ratio (R = height/diameter) and its form, whether cylindrical (vertical or horizontal) or spherical, on the transient pressures resulting from abnormal working events of pumps are examined. The primary objectives of this study are to identify the best vessel shape and to determine the optimal value of R while minimizing water hammer effects. The Bentley HAMMER software, which uses the method of characteristics to solve momentum and continuity equations for unsteady flow, is initially verified and subsequently utilized in this analysis. Three case studies are considered. The results show that under the same operating conditions, R insignificantly affects the maximum and minimum pressures. In addition, as R increases, the extreme pressure improves slightly. Furthermore, the hydraulic performances of cylindrical (whether horizontal or vertical) and spherical air vessels under transient conditions at the same volume are identical, and the small differences in the transient results can be attributed to the changing pressures of air/gas inside the vessel resulting from the variations in the cross-sectional area of the vessel.

Suggested Citation

  • Moustafa S. Darweesh & Anwar A. Ahmed, 2024. "Effect of Air Vessel Configuration on Transient Pressure," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 38(7), pages 2421-2436, May.
    • Handle: RePEc:spr:waterr:v:38:y:2024:i:7:d:10.1007_s11269-024-03776-1
    DOI: 10.1007/s11269-024-03776-1
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    References listed on IDEAS

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    1. Wuyi Wan & Boran Zhang, 2018. "Investigation of Water Hammer Protection in Water Supply Pipeline Systems Using an Intelligent Self-Controlled Surge Tank," Energies, MDPI, vol. 11(6), pages 1-16, June.
    2. Qianping Zhang & Zhaofei Tian & Shuaijie Lu & Huilun Kang, 2023. "Numerical Simulation of Water Hammer in Pipeline System Using Efficient Wave Tracking Method," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 37(8), pages 3053-3068, June.
    3. J. Yazdi & A. Hokmabadi & M. R. JaliliGhazizadeh, 2019. "Optimal Size and Placement of Water Hammer Protective Devices in Water Conveyance Pipelines," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 33(2), pages 569-590, January.
    4. Kamil Urbanowicz & Igor Haluch & Anton Bergant & Adam Deptuła & Paweł Śliwiński, 2023. "Initial Investigation of Wave Interactions During Simultaneous Valve Closures in Hydraulic Piping Systems," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 37(13), pages 5105-5125, October.
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