| Cite this article: | 胡文竹,仝道斌,李忠斌,等.斜式轴流泵装置内流特性数值分析与外特性验证[J].灌溉排水学报,0,():-. |
| HU Wenzhu,TONG Daobin,LI Zhongbin,et al.斜式轴流泵装置内流特性数值分析与外特性验证[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Numerical Analysis of Internal Flow and Verification of External Characteristics of Slanted axial-flow Pump |
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HU Wenzhu1, TONG Daobin2, LI Zhongbin1, WANG Rui2, YANG Fan1
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1.College of Hydraulic Science and Engineering,Yangzhou University;2.Sucheng Water Conservancy Project Construction Service Center
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| Abstract: |
| In order to analyze the internal flow characteristics of the flow channel of the slanted axial-flow pump device, CFD technology was used to conduct three-dimensional numerical simulation of a 30° slanted axial-flow pump device, and the internal characteristics of the flow passage components of the pump device under different flow conditions were obtained. The results show that there is an obvious velocity gradient at the outlet of the elbow inlet channel. Under the optimal flow condition, the axial velocity uniformity of the outlet section of the inlet channel is 93%, and the velocity weighted average angle is 85.2°. With the increase of flow rate, the high pressure area of impeller blade shifts from the inlet side to the outlet side, and the pressure of blade presents a regular gradient distribution. The velocity circulation of the outlet section of the guide vane first decreases and then increases with the increase of flow rate, and the velocity circulation of the outlet section of the guide vane is the lowest under 1.0Qbep flow condition. The vortex bands in the elbow section of the straight pipe outlet channel are mostly long strips, mainly distributed at the inlet of the elbow and near the pump shaft. |
| Key words: Slanted axial-flow pump, pump device, internal flow field, hydraulic performance, numerical simulation |
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