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

Entropy

Tirivanhu Chinyoka¹ 

[1] Center for Research in Computational and Applied Mechanics, University of Cape Town, Rondebosch 7701, South Africa; E-Mail:

关键词: permeable channel wall;    convective cooling;    variable viscosity;    Navier slip;    entropy generation;    Bejan number;   

DOI  :  10.3390/e15062081

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.