SORET AND DUFOUR EFFECTS IN A THREE-DIMENSIONAL MHD FLOW PAST A SEMI-INFINITE UNIFORMLY MOVING VERTICAL PLATE WITH CONSTANT HEAT FLUX

The motivation of the present study behinds the three-dimensional MHD flow past a semi-infinite uniformly moving porous plate with Soret and Dufour effects. The plate is subjected to a sinusoidal suction velocity and constant heat flux in boundary conditions. It is assumed that a uniform strength of magnetic field (B-0) is applied normal to the plate and directed into the fluid region. But the induced magnetic field is neglected in the study on the assumption that the magnetic Reynolds number is very small. The analytical solutions for momentum, energy, and concentration equations are accomplished by implementing asymptotic series expansion method. The present work ascertains the influence of magnetic parameter (M), Soret number (Sr), Dufour number (Du), thermal Grashof number (Gr), modified Grashof number (Gm), Schmidt number (Sc), Prandtl number (Pr), Reynolds number (Re) on velocity profile (u), temperature profile (theta), concentration profile (phi), skin friction (tau), and Sherwood number (Sh). The results are established and discussed with the help of graphs which has been drawn by using the MATLAB software. It is found from the study that fluid velocity rises under the influence of Soret and Dufour effects and a reverse behavior is seen for increasing values of magnetic parameter. Moreover, it is seen that fluid temperature drops on hiking Dufour number.