Numerical analysis and parametric optimization of surge protection devices in a long up-pumping water pipeline
- 36 Downloads
This study aims to present a parametric analysis of combined use of two surge protection devices in a relatively very long up-pumping water supply pipeline. Transient conditions are induced by sudden pump tripping. The effects of four parameters of hydropneumatic tank, i.e., polytropic exponent, initial air volume, orifice diameter and wave celerity and two parameters of surge tank, i.e., tank volume and tank orifice diameter are investigated on pressure surges. The parameters are optimized to achieve reduced pressure fluctuations throughout the pipe length. A numerical model is developed to perform hydraulic transient analysis in the pipeline system. Governing partial differential equations for unsteady flows are solved by the method of characteristics (MOC) and are subsequently converted into algebraic form using finite difference method. To establish the authenticity of the model, it is experimentally validated by comparing the model results with the experimental results. The validated model is then employed to analyze the effects of various parameters of the two surge protection devices on pressure fluctuations along the pipe length. The results obtained from the study are optimized for safe operation and economic use of the system.
KeywordsLong up-pumping pipeline Hydraulic transients Parametric analysis Surge protection devices Method of characteristics (MOC)
Unable to display preview. Download preview PDF.
- E. B. Wylie and V. L. Streeter, Fluid transients, Ann Arbor, Michigan: FEB Press (1983).Google Scholar
- C. M. Hanif, Applied hydraulic transient, New York: Van Nostrand Reinhold Co. (1979).Google Scholar
- J. P. Tullis, Hydraulics of pipelines-pumps, valves, cavitation, transients, New York: John Wiley & Sons (1989).Google Scholar
- J. Zhanga, J. Gao, M. Diao, W. Wu, T. Wang and S. Qi, A case study on risk assessment of long distance water supply system, 12th International Conference on Computing and Control for the Water Industry (2013).Google Scholar
- P. Akpan, S. Jones, M. Eke and H. Yeung, Modelling and transient simulation of water flow in pipelines using WANDA transient software, Ain Shams Engineering Journal (2015).Google Scholar
- Y. L. Zhang, M. F. Miao and J. M. Ma, Analytical study on water hammer pressure in pressurized conduits with a throttled surge chamber for slow closure, Water Science and Engineering, 3 (2) (2010) 174–189.Google Scholar
- V. Rezaei, M. Calamak and Z. Bozkus, Performance of a pumped discharge line with combined application of protection devices against water hammer, KSCE Journal of Civil Engineering (2016).Google Scholar
- C. Apollonio, G. Balacco, N. Fontana, M. Giugni and G. Marini, Hydraulic transients caused by air expulsion during rapid filling of undulating pipelines, Water, 8 (25) (2016).Google Scholar
- L. Ramezani and A. B. Karney, Water column separation and cavity collapse for pipelines protected with air vacuum valves: Understanding the essential wave processes, Journal of Hydraulic Engineering (2016).Google Scholar