A resistance model for flow through porous media

被引：126

作者：

Wu, Jinsui ^{[1
,2
]}

Yu, Boming ^{[1
]}

Yun, Meijuan ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Dept Phys, Wuhan 430074, Peoples R China

[2] N China Inst Sci & Technol, Dept Phys, Langfang 101601, Peoples R China

来源：

TRANSPORT IN POROUS MEDIA | 2008年 / 71卷 / 03期

基金：

中国国家自然科学基金;

关键词：

laminar flow; porous media; flow resistance;

D O I：

10.1007/s11242-007-9129-0

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A new model for resistance of flow through granular porous media is developed based on the average hydraulic radius model and the contracting-expanding channel model. This model is expressed as a function of tortuosity, porosity, ratio of pore diameter to throat diameter, diameter of particles, and fluid properties. The two empirical constants, 150 and 1.75, in the Ergun equation are replaced by two expressions, which are explicitly related to the pore geometry. Every parameter in the proposed model has clear physical meaning. The proposed model is shown to be more fundamental and reasonable than the Ergum equation. The model predictions are in good agreement with the existing experimental data.

引用

页码：331 / 343

页数：13

共 27 条

[1] Analysis of fluid flow and heat transfer interfacial conditions between a porous medium and a fluid layer [J].

Alazmi, B ;

Vafai, K .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2001, 44 (09) :1735-1749

[2]

Bear J., 1988, DYNAMICS FLUIDS PORO

[3]

BIRD RB, 1960, TRANSPORT PHENOMENA, pCH6

[4] HEAT AND MASS TRANSFER IN FIXED AND FLUIDIZED BEDS OF LARGE PARTICLES [J].

BRADSHAW, RD ;

MYERS, JE .

AICHE JOURNAL, 1963, 9 (05) :590-595

[5] Thermodynamic analysis of convective heat transfer in a packed duct with asymmetrical wall temperatures [J].

Demirel, Y ;

AlAli, HH .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1997, 40 (05) :1145-1153

[6] Thermodynamic analysis of convective heat transfer in an annular packed bed [J].

Demirel, Y ;

Kahraman, R .

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 2000, 21 (04) :442-448

[7]

Denn M., 1980, Process Fluid Mechanics

[8]

DENYS KFJ, 2003, THESIS DELFT U NETHE

[9]

Dullien F, 1979, POROUS MEDIA FLUID T, DOI DOI 10.1016/0300-9467(81)80049-4

[10]

DUPLESSIS JP, 1994, TRANSPORT POROUS MED, V16, P189

← 1 2 3 →