INFLUENCES OF VARIABLE VISCOSITY AND VARIABLE THERMAL CONDUCTIVITY ON A MIXED CONVECTIVE HYDROMAGNETIC FLOW IN A VERTICAL CHANNEL WITH THERMOPHORETIC DEPOSITION

The infl uences of variable viscosity and thermal conductivity on a steady, laminar, viscous, incompressible, hydromagnetic fl ow passing through a channel fi lled with a porous medium are investigated. The eff ects of heat source, thermal radiation, thermophoretic deposition, and Soret and Dufour numbers are considered. The governing equations are solved by the MATLAB bvp4c solver. It is found that increases in the viscosity parameter, thermal conductivity parameter, and the thermophoretic coeffi cient reduce the fl uid velocity, while increasing radiation parameter and Dufour number enhance it. An increase in the thermal conductivity parameter raises the concentration, but reduces the temperature. The infl uences of the relevant parameters on the skin friction and Sherwood and Nusselt numbers are presented in tabular form and analyzed.
The infl uences of variable viscosity and thermal conductivity on a steady, laminar, viscous, incompressible, hydromagnetic fl ow passing through a channel fi lled with a porous medium are investigated. The eff ects of heat source, thermal radiation, thermophoretic deposition, and Soret and Dufour numbers are considered. The governing equations are solved by the MATLAB bvp4c solver. It is found that increases in the viscosity parameter, thermal conductivity parameter, and the thermophoretic coeffi cient reduce the fl uid velocity, while increasing radiation parameter and Dufour number enhance it. An increase in the thermal conductivity parameter raises the concentration, but reduces the temperature. The infl uences of the relevant parameters on the skin friction and Sherwood and Nusselt numbers are presented in tabular form and analyzed.
Author:  U. J. Das, I. Patgiri
Keywords:  hydromagnetic fl ow, variable viscosity, variable thermal conductivity, thermophoretic deposition, thermal radiation, bvp4c solver
Page:  733