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Entropy 2013, 15(6), 2081-2099; doi:10.3390/e15062081

Analysis of Entropy Generation Rate in an Unsteady Porous Channel Flow with Navier Slip and Convective Cooling

1
Center for Research in Computational and Applied Mechanics, University of Cape Town, Rondebosch 7701, South Africa
2
Institute for Advanced Research in Mathematical Modelling and Computations, Cape Peninsula University of Technology, P. O. Box 1906, Bellville 7535, South Africa
*
Author to whom correspondence should be addressed.
Received: 3 April 2013 / Revised: 6 May 2013 / Accepted: 21 May 2013 / Published: 28 May 2013

Abstract

This study deals with the combined effects of Navier Slip, Convective cooling, variable viscosity, and suction/injection on the entropy generation rate in an unsteady flow of an incompressible viscous fluid flowing through a channel with permeable walls. The model equations for momentum and energy balance are solved numerically using semi-discretization finite difference techniques. Both the velocity and temperature profiles are obtained and utilized to compute the entropy generation number. The effects of key parameters on the fluid velocity, temperature, entropy generation rate and Bejan number are depicted graphically and analyzed in detail. View Full-Text
Keywords: permeable channel wall; convective cooling; variable viscosity; Navier slip; entropy generation; Bejan number permeable channel wall; convective cooling; variable viscosity; Navier slip; entropy generation; Bejan number
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

Chinyoka, T.; Makinde, O.D. Analysis of Entropy Generation Rate in an Unsteady Porous Channel Flow with Navier Slip and Convective Cooling. Entropy 2013, 15, 2081-2099.

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