• EFFECTS OF THERMAL DIFFUSION AND DIFFUSION THERMO ON AN UNSTEADY MHD MIXED CONVECTION FLOW PAST AN ACCELERATED INFINITE VERTICAL PLATE WITH VISCOUS DISSIPATION

K. Sudhakar, R. Srinivasa Raju*, M. Rangamma

Abstract


The study of effects of thermal diffusion and diffusion thermo on an unsteady hydromagnetic mixed convective flow of incompressible and electrically conducting fluids past an accelerated infinite vertical porous plate in the presence of viscous dissipation has been made. Numerical solutions have been derived for the velocity, temperature and concentration fields, skin – friction, rate of heat and mass transfer by using Galerkin finite element method. The numerical results for some special cases were compared with Ramana Reddy et al. [16] and were found to be in good agreement. A parametric study illustrating the influence of different flow parameters on velocity, temperature and concentration fields are investigated. The skin – frictions at the plate due to velocity field and rate of heat and mass transfer due to temperature and concentration respectively are obtained in non – dimensional form. The effects of the different physical flow parameters on these respective flow fields are discussed through graphs and results are physically interpreted.


Keywords


Thermal diffusion, Diffusion thermo, unsteady, MHD, Mixed convection flow, viscous dissipation, Galerkin finite element method.

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