文献类型：期刊文献

英文题名：The Simulation of non-Newtonian Power-law Fluid Flow in a Centrifugal Pump Impeller

作者：Xuan-Linh Nguyen[1];Lai, Huanxin[1]

机构：[1]East China Univ Sci & Technol, Key Lab Pressurized Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China

年份：2017

卷号：38

期号：4

起止页码：381

外文期刊名：JOURNAL OF THE CHINESE SOCIETY OF MECHANICAL ENGINEERS

收录：;EI(收录号：20174804454725);WOS:【SCI-EXPANDED(收录号:WOS:000411046300006)】；

基金：Authors are grateful to the National Natural Science Foundation of China for supporting this research under Grants 51176048 and 51576067.

语种：英文

外文关键词：centrifugal pump impeller; CFD technique; non-Newtonian fluid; numerical simulation

摘要：The performances of a centrifugal pump are affected when handling non-Newtonian liquids, requiring a larger power "input than same pump handling water. In this paper, the power-law fluid model was implemented to study the non-Newtonian effects on the centrifugal pump impeller when the working fluid is the 7.5% by weight aqueous solutions of carboxy-methycellulose (CMC). The standard k-epsilon two-equation model is used for the closure of turbulent incompressible flow. The results of non-Newtonian power-law fluid are compared with those of water in the turbulence flow regime. It is found that the steady flow characteristics of the non-Newtonian power-law fluid and of the water have a plenty of differences. This indicates that the non-Newtonian power-law characteristics of the CMC 7.5% might be an important factor in determining the internal flow patterns and the general performances of a centrifugal impeller.