Techniques for computational fluid dynamics modelling of flow in membrane channels

被引：147

作者：

Wiley, DE ^{[1
]}

Fletcher, DF

机构：

[1] Univ New S Wales, Sch Chem Engn & Ind Chem, Ctr Membrane Sci & Technol, UNESCO, Sydney, NSW 2052, Australia

[2] Univ Sydney, Dept Chem Engn, Sydney, NSW 2006, Australia

来源：

JOURNAL OF MEMBRANE SCIENCE | 2003年 / 211卷 / 01期

关键词：

concentration polarisation; CFD; theory; ultrafiltration; reverse osmosis;

D O I：

10.1016/S0376-7388(02)00412-X

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Accurate modelling of the flow and concentration polarisation in pressure driven membrane processes is inhibited by the complex couplings in the flow equations along with any added effects of variable solution properties. A generic computational fluid dynamics (CFD) model has been developed which incorporates these effects and describes the flow across the membrane wall. The results have been validated against classical solutions available in the literature. Extended work indicates that overly simplified expressions for the dependence of viscosity and diffusivity on concentration produce velocity and concentration profiles that may grossly misrepresent reality. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：127 / 137

页数：11

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