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On the magnetorotatory thermosolutal convection (MRTC) of the Veronis type in the presence of Soret effect

100%

Mohan H. , Kumar P. , Singh P.

2009

tom Vol. 31, nr 2

51-63

In the present paper, we mathematically prove that the Soret-driven thermosolutal convection of the Veronis type under the simultaneous effect of uniform vertical rotation and magnetic field cannot manifest itself as oscillatory motions of growing amplitude if the thermosolutal Rayleigh number Rs, the Lewis number ζ, the Prandtl number δ and the magnetic Prandtl number δ 1 satisfy the inequalities

MHD free convection heat and mass transfer in a doubly stratified Darcy porous medium considering Soret and Dufour effects with viscous dissipation

84%

Kishan N. , Reddy M. C. K. , Govardhan K.

2009

tom Vol. 14, no 3

733-745

Numerical studies are performed to examine the Soret, Dufour and viscous dissipation effects on steady MHD, free convection heat and mass transfer from a vertical surface in a doubly stratified Darcy porous medium. The non-linear partial differential equations, governing the problem under consideration, have been transformed by a similarity transformation into a system of ordinary differential equations, which is solved numerically by using the implicit finite difference scheme. The effects of various parameters on the flow field have been examined. The results for the wall temperature and concentration obtained are presented for various values of the parameters Le, N, M, Ec, Sr, Df, [...].

Buoyancy and Soret effect on unsteady MHD mixed convective slip flow in a permeable vertical plate

84%

Rashi Kumar B. , Sivaraj R.

tom Vol. 17, no. 1

179-190

This paper is focused on the study of heat and mass transfer in the unsteady MHD mixed convective flow of a viscous incompressible fluid bounded by a permeable vertical plate subject to the influence of buoyancy, viscous dissipation, ohmic heating and the Soret effect embedded with slip condition at the boundary layer. In order to obtain a better insight into this problem, we make use of the perturbation method. The results for velocity, temperature, concentration, skin friction, the Nusselt number as well as the Sherwood number are examined analytically and the effects of various significant parameters entering into this problem are displayed graphically.