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Entropy 2013, 15(11), 4589-4606; doi:10.3390/e15114589

Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media

1
Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldanha 7395, South Africa
2
Department of Mathematics and Statistics, Polytechnic of Namibia, Namibia's University of Science and Technology, Private Bag 13388, 13 Storch Street, Windhoek 9000, Namibia
*
Author to whom correspondence should be addressed.
Received: 16 September 2013 / Revised: 6 October 2013 / Accepted: 21 October 2013 / Published: 25 October 2013
(This article belongs to the Special Issue Entropy and the Second Law of Thermodynamics)

Abstract

The present work investigates numerically the inherent irreversibility in a steady flow of a couple stress fluid through a vertical channel packed with saturated porous substances. The First and Second Laws of Thermodynamics are applied to analyze the problem. The nonlinear governing equations in Cartesian coordinates are obtained and solved numerically using shooting methods together with a Runge-Kutta Fehlberg integration scheme. The entropy generation number is computed by utilizing the velocity and temperature profiles. The effects of various physical parameters on the flow and heat transfer characteristics, as well as entropy generation rates and Bejan number, are investigated through graphs. View Full-Text
Keywords: channel flow; couple stress fluid; buoyancy force; entropy analysis; porous media channel flow; couple stress fluid; buoyancy force; entropy analysis; porous media
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Makinde, O.D.; Eegunjobi, A.S. Entropy Generation in a Couple Stress Fluid Flow Through a Vertical Channel Filled with Saturated Porous Media. Entropy 2013, 15, 4589-4606.

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