COUETTE-FLOW THROUGH A POROUS-MEDIUM OF A HIGH PRANDTL NUMBER FLUID WITH TEMPERATURE-DEPENDENT VISCOSITY

被引：11

作者：

DASKALAKIS, J

机构：

[1] Public Power Corporation, DMKT, Athens, 10433

来源：

INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 1990年 / 14卷 / 01期

关键词：

Couette flow; Fluid mechanics; High viscosity fluid; Porous medium;

D O I：

10.1002/er.4440140104

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The velocity and temperature profiles for an impulsively started Couette flow have been derived for a fluid with a high and strongly temperature‐dependent viscosity when the flow takes place through a porous medium. The steady as well as the transient state flows are discussed and the influence of the medium permeability is assessed. In the steady state the presence of the porous medium causes higher maximum temperatures only for sufficiently low permeabilities and in all cases significantly lower velocity profiles. The flow development times tend to be higher for the low permeabilities only for high Nahme numbers. For the transient state it is noticeable that, in all cases, the velocity develops much more rapidly than the temperature and that the presence of the porous medium accelerates this tendency. Finally the medium permeability produces skew temperature profiles and higher temperature time gradients at all times. Copyright © 1990 John Wiley & Sons, Ltd

引用

页码：21 / 26

页数：6

共 5 条

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[4]

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[5]

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