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Entropy 2019, 21(4), 359; https://doi.org/10.3390/e21040359

Entropy Generation in MHD Conjugate Flow with Wall Shear Stress over an Infinite Plate: Exact Analysis

1
Institute of Business and Management Sciences, the University of Agriculture, Peshawar 25000, Pakistan
2
Department of Mathematics, City University of Science and Information Technology, Peshawar 25000, Pakistan
3
Faculty of Mathematics and Statistics, Ton Duc Thang University, Ho Chi Minh City 72915, Vietnam
4
Department of Mechatronics and System Engineering, College of Engineering, Majmaah University, Majmaah 11952, Saudi Arabia
5
Department of Mathematics, College of Arts and Sciences Wadi Aldawaser, Prince Sattam bin Abdulaziz University, Wadi Aldawaser 11991, Saudi Arabia
*
Author to whom correspondence should be addressed.
Received: 2 February 2019 / Revised: 15 March 2019 / Accepted: 24 March 2019 / Published: 3 April 2019
(This article belongs to the Special Issue Entropy Generation and Heat Transfer)

Abstract

The current work will describe the entropy generation in an unsteady magnetohydrodynamic (MHD) flow with a combined influence of mass and heat transfer through a porous medium. It will consider the flow in the XY plane and the plate with isothermal and ramped wall temperature. The wall shear stress is also considered. The influences of different pertinent parameters on velocity, the Bejan number and on the total entropy generation number are reported graphically. Entropy generation in the fluid is controlled and reduced on the boundary by using wall shear stress. It is observed in this paper that by taking suitable values of pertinent parameters, the energy losses in the system can be minimized. These parameters are the Schmitt number, mass diffusion parameter, Prandtl number, Grashof number, magnetic parameter and modified Grashof number. These results will play an important role in the heat flow of uncertainty and must, therefore, be controlled and managed effectively. View Full-Text
Keywords: entropy generation; Bejan number; heat transfer; wall shear stress; ramped wall; porous medium entropy generation; Bejan number; heat transfer; wall shear stress; ramped wall; porous medium
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Khan, A.; ul Karim, F.; Khan, I.; Alkanhal, T.A.; Ali, F.; Khan, D.; Nisar, K.S. Entropy Generation in MHD Conjugate Flow with Wall Shear Stress over an Infinite Plate: Exact Analysis. Entropy 2019, 21, 359.

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