Numerical and Experimental Investigations of Flow Pattern and Anti-Vortex Measures of Forebay in a Multi-Unit Pumping Station
1
College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
2
Key Laboratory of Fluid and Power Machinery, Ministry of Education, Chengdu 610039, China
3
Hydrodynamic Engineering Laboratory of Jiangsu Province, Yangzhou University, Yangzhou 225009, China
4
Jiangsu Surveying and Design Institute of Water Resources Co., Ltd., Yangzhou 225127, China
*
Author to whom correspondence should be addressed.
Academic Editor: Helena M. Ramos
Water 2021, 13(7), 935; https://doi.org/10.3390/w13070935
Received: 24 January 2021 / Revised: 17 March 2021 / Accepted: 26 March 2021 / Published: 29 March 2021
(This article belongs to the Section Hydraulics and Hydrodynamics)
The forebay of a pumping station is an important building connecting the diversion channel and the intake pool. Based on the physical model test and research method of computational fluid dynamics (CFD) based on the improved fluid volume model, the flow field in a forebay of a multi-unit pumping station is analyzed in combination with the engineering practice of the Exi River flood discharge station in the Anhui Province, China. Aiming at the technical problems of a large-scale swing water area in the forebay internal flow field of a lateral intake pumping station, the technical problems are discussed. Different rectification measures are selected to adjust the flow pattern in the forebay of a pumping station. The internal rectification flow pattern in the forebay under different plans, the uniformity of flow velocity distribution in the measurement section, and the reduction rate of the vortex area are studied and compared, and the optimal plan is given. The results show that the flow pattern of the 7.5 m and 15 m solutions of the lengthened inflow wall is still poor, and the ability to eliminate vortices is not strong or even counterproductive. The combination plan of a rectifier sill and a rectifier pier has a better effect and can eliminate more than 90% of the vortex, but the uniformity of flow speed has not been significantly improved at the inlet of the pumping station; the combination plan of a rectifier sill and a diversion wall opening has the best effect; the reduction rate of the vortex area is more than 85%, and the velocity uniformity of three measuring sections is better than that of the original plan. The uniformity of flow rate near the pumping station is increased by 4% and that far away from the pumping station is increased by 13%. The combination plan of a rectifier sill and diversion wall with openings is recommended.
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Keywords:
pumping station; forebay; flow pattern; model test; numerical simulation
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MDPI and ACS Style
Yang, F.; Zhang, Y.; Liu, C.; Wang, T.; Jiang, D.; Jin, Y. Numerical and Experimental Investigations of Flow Pattern and Anti-Vortex Measures of Forebay in a Multi-Unit Pumping Station. Water 2021, 13, 935. https://doi.org/10.3390/w13070935
AMA Style
Yang F, Zhang Y, Liu C, Wang T, Jiang D, Jin Y. Numerical and Experimental Investigations of Flow Pattern and Anti-Vortex Measures of Forebay in a Multi-Unit Pumping Station. Water. 2021; 13(7):935. https://doi.org/10.3390/w13070935
Chicago/Turabian StyleYang, Fan; Zhang, Yiqi; Liu, Chao; Wang, Tieli; Jiang, Dongjin; Jin, Yan. 2021. "Numerical and Experimental Investigations of Flow Pattern and Anti-Vortex Measures of Forebay in a Multi-Unit Pumping Station" Water 13, no. 7: 935. https://doi.org/10.3390/w13070935
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