Thermal and mass diffusion on MHD natural convective flow of a rarefied gas along a vertical porous plate (Q760298)

This paper studies the unsteady flow of an electrically conducting incompressible rarefied gas due to the combined buoyancy effects of thermal and mass diffusion past an infinite vertical porous plate with constant suction in the presence of a uniform transverse magnetic field. A perturbation technique has been used to obtain an approximate solution of the differential equations. The flow phenomenon has been characterized by non-dimensional parameters like the Eckert number (Ec), the Grashof numbers \((G_ 1,G_ 2)\), the magnetic field parameter (M), the Prandtl number (Pr), the Schmidt number (Sc), the velocity slip, temperature and concentration jump coefficients \((h_ 1,h_ 2,h_ 3)\). The effects of these parameters on the velocity and temperature distributions as well as on the skin-friction and heat transfer at the plate have been analysed. - In general, the problem is important, the method of analysis is clear and the results are interesting. The paper is most useful to researchers interested in the area of natural convection.