Effects of variable viscosity and thermal conductivity on steady magnetohydrodynamic flow of a micropolar fluid through a specially characterized horizontal channel

Abstract

An investigation is made on effects of temperature dependent viscosity and thermal conductivity on MHD flow and heat transfer of a micropolar fluid through a horizontal channel, lower being a stretching sheet and upper being a permeable plate bounded by porous medium. It is assumed that both the fluid viscosity and thermal conductivity vary as inverse linear functions of temperature. Similarity transformations are used to transform the governing partial differential equations of motion into ordinary differential equations which are solved numerically with the help of shooting method. Numerical results are shown by plotting of graphs for the velocity, temperature and micro-rotation profiles. The values of coefficient of skin friction and Nusselt number are presented in the form of tables for different values of parameters which reflects the flow and heat transfer characteristics of the fluid. It is seen that viscosity parameter and thermal conductivity parameter as well as other parameters have significant effects on the flow and heat transfer of the flow.

Unsteady Hydromagnetic Non-Newtonian Nanofluid Flow Past a Porous Stretching Sheet in the Presence of Variable Magnetic Field and Chemical Reaction

“…Hydromagnetics refers to the study of the flow of electrically conducting fluids in the presence of magnetic fields. Examples of such fluids include electrolytes, plasma and liquid metals [3]. [4] studied heat transfer of magnetohydrodynamic stratified dusty fluid flow through an inclined irregular porous channel.…”