华东理工大学学报（自然科学版）2017，Vol.43Issue(2)：280-285,6.DOI:10.14135/j.cnki.1006-3080.2017.02.020
自吸泵自吸过程气液两相流数值模拟分析
Numerical Simulation of Gas-Liquid Two-Phase Flow in Self-priming Pump During Self-priming Period
刘洪生 1苏永升1
作者信息
- 1. 华东理工大学承压系统与安全教育部重点实验室,上海200237
- 折叠
摘要
Abstract
The self-priming process of self-priming pump was a very complicated gas-liquid mixed flow and separation process.In this article,a unsteady numerical simulation was applied to simulated the selfpriming process of self-priming pump,with the initial condition was that the inlet and outlet pipe filled with air,and then self-priming time was estimated;The simulation results showed that gas inhaled into and discharged of the pump were mainly concentrated in the early stage of the self-priming process,the air void fraction reached up to 62.4％ and 45.3％,respectively at the impeller inlet and the pump outlet in the initial stage;The change of air void fraction in the impeller inlet was more drastic than that of the pump outlet;In addition,self-priming performance was affected by the gap between impeller and guide vane,and the data showed a negative correlation between gap and self-priming time,which revealed the lager gap was beneficial to self-priming of the pump.关键词
自吸泵/自吸过程/气液两相流/非稳态数值模拟Key words
self-priming pump/self-priming process/gas-liquid two-phase flow/unsteady numerical simulation分类
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刘洪生,苏永升..自吸泵自吸过程气液两相流数值模拟分析[J].华东理工大学学报（自然科学版）,2017,43(2):280-285,6.
