流体机械2016，Vol.44Issue(5)：31-36,6.DOI:10.3969/j.issn.1005-0329.2016.05.007
双吸双流道泵固液两相流动特性分析
Analysis on Flow Characteristics of Solid-liquid Two-phase Flow in Double-channel with Double-suction Pump
雷可铭 1李勇刚 2杜宁江 3任开宇 3罗宝杰3
作者信息
- 1. 东南大学，江苏南京 211189
- 2. 农业部水泵质量监督检验测试中心，重庆 402160
- 3. 国网四川省电力公司广元供电公司，四川广元 628000
- 折叠
摘要
Abstract
In order to study the solid-liquid two-phase flow law of double-channel with double-suction pump,this paper not only calculates the internal flow law and the external characteristic curves but also contrasts with the single-phase flow results in differ-ent sand diameters and different concentrations as well as different flow conditions,based on CFD performance prediction.The re-sults show that first the pressure gradient is greater and the pressure distribution is more significantly in the flow channel than the single-phase flow.Second the flow loss is more serious and the whirlpool area is more obvious as well as the movement coupling is more intense of the impeller and volute.Third the solid particles are mainly concentrated in the upper and lower shroud as well as the outlet side of the volute.Forth the particle volume fraction is smaller at the inlet of impeller than the outlet.Last changes of the particle diameters is obvious for the solid segregation,on one hand with the increase of the sand diameter and the flow,the Inlet and outlet total pressure differences of pump is reduced,on the other hand with the sediment concentration increases,the inlet and outlet total pressure differences of pump is increases.关键词
双吸双流道泵/泥沙/叶轮/蜗壳Key words
double-channel with double-suction pump/sand/impeller/volute分类
机械制造引用本文复制引用
雷可铭,李勇刚,杜宁江,任开宇,罗宝杰..双吸双流道泵固液两相流动特性分析[J].流体机械,2016,44(5):31-36,6.
