Numerical investigation of developing natural convection in vertical double-passage porous annuli

被引：23

作者：

Girish N. ^{[1
]}

Makinde O.D. ^{[2
]}

Sankar M. ^{[3
]}

机构：

[1] Department of Mathematics, JSS Academy of Technical Education, Bangalore

[2] Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldanha

[3] Department of Mathematics, School of Engineering, Presidency University, Bangalore

来源：

Defect and Diffusion Forum | 2018年 / 387卷

关键词：

Baffle; Convection; Double-passage annuli; Porousmedia;

D O I：

10.4028/www.scientific.net/DDF.387.442

中图分类号：

TK1 [热力工程、热机];

学科分类号：

080702 ;

摘要：

The present study deals with thenumerically investigation ofdeveloping laminar natural convection in the vertical double-passage porous annuliformed by three vertical concentric cylinders of which the middle cylinder is a thin and perfectly conductive known as baffle.In this analysis, two thermal conditions are considered namely, either inner or outer cylindrical wall is constantly heated while the opposite wall is insulated. An implicit finite difference technique is employed to solve the boundary layer equations in both the annular passages. The temperature profiles and velocity profiles in axial as well as radial directions have been presented for different values of Grashof number, Darcy number, baffle position and radius ratio. The results reveal thatboth physical and geometrical parameters have profound influence on the development of velocity and thermal fields as well as heat transfer rate. © 2018 Trans Tech Publications, Switzerland.

引用

页码：442 / 460

页数：18

共 20 条

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