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| Shape optimization and experimental study of dove wing measuring flume in rectangular channel |
| LIU Hongtao1,2,3, CAI Die2,3, WU Bo4, ZHAO Ruijuan5, WEI Xiying6, QU Zhongyi1* |
| 1. College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China; 2. School of Water Conservancy and Environmental Engineering, Changchun University of Engineering, Changchun, Jilin 130012, China; 3. Jilin Water Engineering Safety and Disaster Prevention Engineering Laboratory, Changchun, Jilin 130012, China; 4. School of Mechanical and Electrical Engineering, Changchun University of Engineering, Changchun, Jilin 130012, China; 5. Songliao Water Conservancy Committee, Changchun, Jilin 130012, China; 6. Management Office of Xingshao Reservoir Irrigation District, Yongji County, Changchun, Jilin 132214, China |
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Abstract In order to solve the problem of limited application of measuring flume in the plain irrigation area, a kind of measuring flume with pigeon wing shape was designed by using the contour of pigeon wings and bionic optimization design method, and the hydraulic characteristics of measuring flume under different flow patterns were studied by model test. The test results show that the stable relationship between water depth and flow rate still exists in the case of free flow; the location of hydraulic jump is different in different flow patterns; the hydraulic jump occurs near the exit section in the case of free flow, and near the throat in the case of submerged flow; the flow measurement accuracy in the case of free flow is higher than that in the case of submerged flow, and the flow measurement error is between 2% and 3%, but the flow measurement error decreases with the increase of flow rate in the case of submerged flow.The critical submergence of dove wing flume is above 0.850, and the maximum submergence is 0.933. The pigeon wing measuring flume has good performance, which can be used in stan-dardized design and engineering application.
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Received: 07 May 2020
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