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| Orthogonal optimization of flow uniformity at exit section of elbow-inlet passages |
| YAN Hao1, CHEN Liang2*, CHAI Liping1, ZHANG Yu1, LI Qiang1, SHI Haixia1 |
| 1. School of Mechanical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; 2. Anhui Provincial Science and Technology Department, Hefei, Anhui 230091, China |
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Abstract Elbow-inlet passage is widely used in large drainage pumping stations. Flow uniformity at the exit section directly determines its hydraulic performance. Flow uniformity must be optimized to improve the operational efficiency of the large axial-flow pumping station. This study used modeling and numerical simulation to investigate the elbow-inlet passage, and the accuracy of the calculation results was verified. The key geometric parameters affecting the uniformity of the flow were optimized by the orthogonal experiment design. The optimal schemes were obtained and compared with the original scheme. Results showed that flow uniformity Vu after optimization was 95.41%, which was increased by 1.04%. The pumping station efficiency was increased by 1.89%, thereby confirming the applicability and accuracy of the proposed scheme, especially for the optimization of flow uniformity of the exit section of the elbow-inlet passage.
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Received: 10 January 2018
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