Title

MIXED CONVECTION HEAT TRANSFER IN AN ANISOTROPIC POROUS MEDIUM WITH OBLIQUE PRINCIPAL AXES

Authors

Authors

K. Vajravelu;K. V. Prasad

Comments

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Abbreviated Journal Title

J. Mech.

Keywords

Anisotropic porous media; Darcy viscous dissipation; Variable fluid; properties; Second order finite difference method; LATERAL MASS FLUX; NATURAL-CONVECTION; VERTICAL CHANNEL; VISCOUS; DISSIPATION; VARIABLE VISCOSITY; FORCED-CONVECTION; OPPOSING BUOYANCY; BOUNDARY-LAYERS; FLOW; PERMEABILITY; Mechanics

Abstract

In this paper, a numerical study is carried out to investigate the mixed convection flow and heat transfer in a parallel-plate channel with an anisotropic permeable porous medium. The principal axis of the porous medium is orientated in a direction which is oblique to the gravity vector. Both clear (Newtonian) fluid dissipation and Darcy viscous dissipation are considered in the heat transport equation. In this model, the temperature dependent fluid properties are considered and their influence on the flow and heat transfer characteristics is brought out. The governing non-linear equations (in non-dimensional form) are solved numerically by a second order finite difference scheme. The directional permeability ratio A(1) is defined to combine the effects of the permeability ratio parameter K-* = (K-1/K-2) and the orientation angle Phi(1). The effects of the anisotropic permeability ratio, the orientation angle of the principal axis, and the temperature dependent variable properties on the mixed convection flow and heat transfer are investigated. It is demonstrated that both the anisotropic permeability of the porous medium and the variable transport properties have strong effects on the flow and heat transfer characteristics.

Journal Title

Journal of Mechanics

Volume

30

Issue/Number

4

Publication Date

1-1-2014

Document Type

Article

Language

English

First Page

327

Last Page

338

WOS Identifier

WOS:000339698300001

ISSN

1727-7191

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