Irreversibility Analysis of Magnetohydrodynamic Flow over an Impulsively Started Plate

Adnan Saeed BUTT; Asif ALI; Ahmer MEHMOOD

Authors

Adnan Saeed BUTT Department of Mathematics, Quaid-I-Azam University, Islamabad
Asif ALI Department of Mathematics, Quaid-I-Azam University, Islamabad
Ahmer MEHMOOD Department of Mathematics, International Islamic University, Islamabad

Keywords:

Magnetohydrodynamic, Laplace transform, entropy generation

Abstract

The aim of the present paper is to analyze the irreversibility effects in magnetohydrodynamic flow over an impulsively started plate. The transformed dimensionless governing equations for the flow and heat equations are solved using the Laplace transform technique. The velocity and the temperature profiles are obtained for the parameters involved in the problem. The expression for the entropy generation number and the Bejan number are computed using the velocity and the temperature expressions. The graphs are plotted for velocity, temperature, entropy generation number and Bejan number and are discussed.

doi:10.14456/WJST.2014.56

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Author Biographies

Adnan Saeed BUTT, Department of Mathematics, Quaid-I-Azam University, Islamabad

Department of Mathematics

Asif ALI, Department of Mathematics, Quaid-I-Azam University, Islamabad

Department of Mathematics

Ahmer MEHMOOD, Department of Mathematics, International Islamic University, Islamabad

Department of Mathematics (FBAS)

References

A Bejan. A study of entropy generation in fundamental convective heat transfer. J. Heat Trans. 1979; 101; 718-25.

A Bejan. Second-law analysis in heat transfer and thermal design. Adv. Heat Trans. 1982; 15; 1-58.

MQ Odat, RA Damseh and MAA Nimr. Effect of magnetic field on entropy generation due to laminar forced convection past a horizontal flat plate. Entropy 2004; 4, 293-303.

S Saouli, S Aiboud-Saouli. Second law analysis of laminar falling liquid film along an inclined heated plate. Int. Comm. Heat Mass Trans. 2004; 6, 879-86.

JA Esfahani and MM Jafarian. Entropy generation analysis of a flat plate boundary layer with various solution methods. Sci. Iranica 2005; 12, 233-40.

SA Saouli, S Saouli, N Settou and N Meza. Thermodynamic analysis of Gravity-driven liquid film along an inclined heated plate with hydromagnetic and viscous dissipation effects. Entropy 2006; 8 188-99.

OD Makinde. Irreversibility analysis for a gravity driven non-Newtonian liquid film along an inclined isothermal plate. Phys. Scr. 2006; 74, 642-5.

OD Makinde. Entropy analysis for MHD boundary layer flow and heat transfer over a flat plate with a convective surface boundary condition. Int. J. Exergy 2012; 10, 142-54.

OD Makinde. Second law analysis for variable viscosity hydromagnetic boundary layer flow with thermal radiation and Newtonian heating. Entropy 2011; 13, 1446-64.

AS Butt, S Munawar, A Ali and A Mehmood. Entropy generation in the Blasius flow under thermal radiation. Phys. Scr. 2012; 85, Article ID 035008.

AS Butt, S Munawar, A Ali and A Mehmood. Entropy generation in hydrodynamic slip flow over a vertical plate with convective boundary. J. Mech. Sci. Tech. 2012; 26, 2977-84.

A Shahzad, R Ali and M Khan. On the exact solution for axisymmetric flow and heat transfer over a nonlinear radially stretching sheet. Chin. Phys. Lett. 2012; 29, Article ID 084705.