西华大学学报（自然科学版）2017，Vol.36Issue(5)：10-16,7.DOI:10.3969/j.issn.1673-159X.2017.05.002
基于CFD的污水泵性能预测与优化
Performance Prediction and Optimization of a Sewage Pump Based on CFD Analysis
摘要
Abstract
In this paper, the internal steady solid-liquid two-phase flow inside a sewage pump was numerically calculated by u-sing the "frozen rotor method" and Mixture model. The hydraulic performance and wear characteristics of flow components were em-phatically compared and analyzed for the pump with two kinds of diffusion structures and three kinds of blade outlet angles. Research results show that for the curving diffusion and the straight diffusion structure, there is no significant impact on the external performance of the pump. The calculated head and efficiency of the pump with the curving diffusion are slightly higher than that of the straight diffu-sion pump, but the difference between them is very limited. Comparatively, the wall wear is slighter when the sewage pump is with the straight diffusion. With the increase of blade outlet angle, the pump heads show an increasing trend , while the impact on the efficiency curve is not significant. The research manifest that the pump model with blade outlet angle of 30 ° and straight diffusion has relatively good hydraulic performance and wear properties.关键词
污水泵/固液两相流/数值计算/水力设计/叶片出口角/优化Key words
sewage pump/solid-liquid two-phase flow/numerical calculation/hydraulic design/blade outlet angle/optimizing分类
机械制造引用本文复制引用
张玉良,肖俊建,周兆忠,余建平..基于CFD的污水泵性能预测与优化[J].西华大学学报（自然科学版）,2017,36(5):10-16,7.基金项目
浙江省科技厅公益性项目(2015C31129) （2015C31129）
衢州学院中青年学术骨干项目(XNZQN201508) （XNZQN201508）
国家自然科学基金重点基金项目(51536008). （51536008）
