INTERNATIONAL JOURNAL OF ENGINEERING, SCIENCE AND - Volume 7, Issue 4, April 2018

Pages: 529-548

Date of Publication: 24-Apr-2018

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THERMAL DIFFUSION AND DIFFUSION THERMO EFFECTS ON MHD FLOW OF A CHEMICALLY REACTING FLUID PAST A POROUS PLATE WITH TIME DEPENDANT TRANSPIRATION VELOCITY AND HALL CURRENT

Author: Kotagiri Srihari

Category: Engineering, Science and Mathematics

Abstract:

Effects of Soret, Dufour and Chemical reaction on unsteady free-convection flow of an electrically conducting viscous incompressible fluid along an infinite vertical porous plat subjected to a time dependant transpiration velocity with Hall Effect is analyzed. A magnetic field is applied perpendicular to the flow. The governing equations in non-dimensional form are solved using implicit finite difference method. Graphical results for velocity, temperature and concentration fields and tabular values of shearing stresses are presented and discussed. It is found that main and secondary velocity of the fluid and shearing stresses increase with the increasing values of Soret and Dufour. Soret and Dufour effects greatly influence the concentration and temperature profiles in the thermal and solutal boundary layers.

Keywords: Hall effect; Magnetic field, Soret and Dufour; Chemical reaction, Finite-difference technique.