The Influence of Wrap Angle of Blade on the Internal Flow Field and Hydraulic Performance of Double Suction Pump

Volume 1: Flow Manipulation and Active Control; Bio-Inspired Fluid Mechanics; Boundary Layer and High-Speed Flows; Fluids Engineering Education; Transport Phenomena in Energy Conversion and Mixing; Turbulent Flows; Vortex Dynamics; DNS/LES and Hybrid RANS/LES Methods; Fluid Structure Interaction; Fl Pub Date : 2018-07-15 DOI:10.1115/FEDSM2018-83190

Hao Chang, W. Shi, Wei Li, Jianrui Liu, Lingjiu Zhou, Chuan Wang, Wei Fu, Li Xiaowei

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Abstract

In order to study the influence rule of wrap angle of blade on the internal flow field and hydraulic performance of double suction pump, 5 kinds of wrap angles of blade with 100°, 110°, 120°, 130° and 140° are designed in this paper. The turbulence model and the grid type are analyzed, the performance of ES350-575 double suction pump is obtained by employ the software CFX. The static pressure and velocity distributions in the cross-section are analyzed. Therefore, the optimal model is obtained, and the relevant external characteristic test is conducted. The result shows that the reasonable increase of the wrap angle of blade can enhance the performance of the pump effectively, which can improve the static pressure and velocity distributions of the internal flow field.

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叶片包角对双吸泵内部流场及水力性能的影响

为了研究叶片包绕角对双吸泵内部流场和水力性能的影响规律，本文设计了100°、110°、120°、130°和140°5种叶片包绕角。分析了ES350-575双吸泵的湍流模型和网格类型，利用CFX软件对ES350-575双吸泵的性能进行了分析。分析了截面内的静压和速度分布。因此，得到了最优模型，并进行了相关的外部特性试验。结果表明，合理增大叶片包角可以有效地提高泵的性能，从而改善内部流场的静压和速度分布。

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Volume 1: Flow Manipulation and Active Control; Bio-Inspired Fluid Mechanics; Boundary Layer and High-Speed Flows; Fluids Engineering Education; Transport Phenomena in Energy Conversion and Mixing; Turbulent Flows; Vortex Dynamics; DNS/LES and Hybrid RANS/LES Methods; Fluid Structure Interaction; Fl

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