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Analysis of Flow Pattern Behind Two-stage Flap Valves of Pumping Station
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Guo-cong FU1, Hua CHEN1, Bing-nan ZHOU1, Jian-feng LIU1, Hui XIA2, Wei-gang LU1
Water Resources and Power | 2023, 41(5) : 162 - 165
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Water Resources and Power | 2023, 41(5): 162-165
• ELECTROMECHANICS AND CONTROL ENGINEERING •
Analysis of Flow Pattern Behind Two-stage Flap Valves of Pumping Station
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Guo-cong FU1, Hua CHEN1, Bing-nan ZHOU1, Jian-feng LIU1, Hui XIA2, Wei-gang LU1
Affiliations
  • 1.College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
  • 2.Jiangsu Surveying and Design Institute of Water Resources Co., Ltd., Yangzhou 225127, China
Published: 2023-05-25 doi: 10.20040/j.cnki.1000-7709.2023.20220415
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In order to deeply understand the impact of the alteration of different opening angles of the two stage flap valves on outflow, a two- stage flap valve of a certain pumping station was taken as an example. Choosing four opening angle schemes widely used in practical projects, the three-dimensional flow pattern behind the two stage flap valve under different flow rates was simulated. The influence of flow streamline, velocity uniformity and hydraulic loss in culvert on the flow pattern was analyzed. The results show that the resistance loss coefficient along the outlet culvert is inversely correlated with the opening angle, to be specific the larger the opening angle of the flap valve, the less the hydraulic loss of the water flow in the outlet culvert pipe, and disparity degree becomes more obvious with the increase of the flow rate. When the flow rate is 2 m3/s, the hydraulic loss of the outlet culvert pipe in scheme 4 decreases by 49.6% compared to that of scheme 1; When the flow rate is 16 m3/s, the hydraulic loss of the outlet culvert pipe in scheme 4 decreases by 79.1% compared to that of scheme 1. To conclude, the larger the opening angle of the flap valve, the better the flow pattern in the culvert and when the flap valve is opened to 46°for the upper flap valve and 64°for the lower flap valve in scheme 3, the flow pattern in the culvert has tended to a better state.

two-stage flap valves  /  flow pattern on the rear side of the flap valves  /  flow pattern analysis  /  numerical simulation  /  pumping station
Guo-cong FU, Hua CHEN, Bing-nan ZHOU, Jian-feng LIU, Hui XIA, Wei-gang LU. Analysis of Flow Pattern Behind Two-stage Flap Valves of Pumping Station[J]. Water Resources and Power, 2023 , 41 (5) : 162 -165 . DOI: 10.20040/j.cnki.1000-7709.2023.20220415
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Year 2023 volume 41 Issue 5
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20220415
  • Receive Date：2022-03-06
  • Online Date：2026-01-28
  • Published：2023-05-25
Article Data
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History
  • Received：2022-03-06
  • Revised：2022-08-16
Funding
Affiliations
    1.College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
    2.Jiangsu Surveying and Design Institute of Water Resources Co., Ltd., Yangzhou 225127, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2023.20220415
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表12种不同金属材料的力学参数
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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