Please use this identifier to cite or link to this item: http://gukir.inflibnet.ac.in:8080/jspui/handle/123456789/4050
Title: Free convective flow in a vertical rectangular duct filled with porous matrix for viscosity and conductivity variable properties
Authors: Umavathi J.C.
Keywords: Brinkman-Forchheimer extended
Darcy model
Finite difference method
Variable properties
Vertical rectangular duct
Issue Date: 2015
Publisher: Elsevier Ltd
Citation: International Journal of Heat and Mass Transfer , Vol. 81 , , p. 383 - 403
Abstract: Free convection over a vertical rectangular duct filled with porous matrix with variable viscosity and variable thermal conductivity is studied in this paper. We consider the two-dimensional steady laminar flow and Brinkman-Forchheimer extended Darcy model to define the porous medium. Using the appropriate variables the basic governing equations are transformed to non-dimensional governing equations. The fluid viscosity is assumed to vary exponentially with temperature whereas the thermal conductivity is assumed to vary linearly with temperature. One of the vertical walls of the duct is cooled with constant temperature while the other wall is heated to constant but different temperature. The governing coupled nonlinear momentum and energy equations are solved numerically using finite difference method. The effect of pertinent parameters such as variable viscosity, variable thermal conductivity, Darcy number, inertial parameter, Grashof number, Brinkman number and aspect ratio on the velocity, temperature, volumetric flow rate, shear stress and heat transfer are discussed. © 2014 Elsevier Ltd.
URI: 10.1016/j.ijheatmasstransfer.2014.10.054
http://gukir.inflibnet.ac.in:8080/jspui/handle/123456789/4050
Appears in Collections:1. Journal Articles

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