Effects of Magnetic Field and Variation of Viscosity and Thermal Conductivity on Separation of a Binary Fluid Mixture over a Continuously Moving Surface

摘要

The effects of viscous dissipation, Joule heating and chemical reaction on demixing of a binary mixture of incompressible viscous electrically and thermally conducting fluids in two dimensional steady boundary layer flow with temperature dependent viscosity and thermal conductivity due to a continuously moving surface under the influence of weak uniform transverse magnetic field is investigated. The momentum , energy and concentration equations are reduced to non-linear coupled ordinary differential equations by similarity transformations and are solved numerically by using MATLAB’s built in solver bvp4c. These numerical results are exhibited graphically from which it has been found that the effects of various parameters are to separate the components of the binary mixture by collecting the lighter and rarer component near the surface of the plate and throwing the heavier one away from it. The effects of various parameters on the local skin friction, the Nusselt number and the Sherwood number have been shown in tabular form.