MHD Free Convective Heat and Mass transfer of fluid flow past a moving variable surface in porous media

  ijett-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2013 by IJETT Journal
Volume-4 Issue-4                       
Year of Publication : 2013
Authors : Ashok Kumar Singh , Benu Madhab


Ashok Kumar Singh , Benu Madhab. "MHD Free Convective Heat and Mass transfer of fluid flow past a moving variable surface in porous media". International Journal of Engineering Trends and Technology (IJETT). V4(4):1151-1157 Apr 2013. ISSN:2231-5381. published by seventh sense research group.


This paper is focused to developed a mathematical model and comparative study of combined effects of free convective heat and mass transfer on the steady two - dimensional, laminar fluid flow past a moving permeable vertical surface in a porous med ia subject to a transverse uniform magnetic field. The surface is maintained at linear temperature and concentration variations. Using a similarity transformation, the nonlinear coupled differential equations governing the boundary layer flow, heat and mas s transfer are first reduced to a system of coupled ordinary differential equations and then solved numerically using an implicit finite difference technique. The effects of different parameters such as magnetic field strength parameter (M), ,Schmidt numb er (Sc), buoyancy ratio (N) , suction /blowing parameter (fw), darcy number (Da) are examined in detail to show the interesting aspects of the solution . Numerical result for the dimensionless velocity profiles, the temperature profiles, the concentration p rofiles, the local Nusselt number , sherwood number , skin friction cofficient are presented. The interesting numerical results indicate that the buoyancy parameter, magnetic parameter and suction/blowing parameter have a retarding effect on the velocity, temperature and concentration profiles.


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