UNSTEADY HYDROMAGNETIC CHEMICALLY REACTING MIXED CONVECTION FLOW OVER A STRETCHING SHEET EMBEDDED IN A POROUS MEDIUM WITH THERMAL RADIATION AND HEAT SOURCE/SINK

摘要

This current investigation deals with unsteady hydromagnetic chemically reacting mixed convection flow over a permeable stretching sheet embedded in a porous medium with thermal radiation and heat source/sink. The partial differential equations capturing these dynamics are converted into ordinary differential equations by using suitable transformations. The spectral relaxation method is applied to solve the system of non-linear ordinary differential equation using Matlab. The effects of various physical parameters on the velocity, temperature, and species concentration have been discussed. The parameters such as Prandtl number (Pr), magnetic parameter (M), Schmidt number (Sc), unsteady parameter (A), buoyancy forces ratio parameter (N), chemical reaction (K), radiation parameter (Nr), Eckert number (Ec), local heat source/sink parameter (Q) and buoyancy parameter due to temperature (λ) are considered critical in this investigation. The coefficients of skin friction and heat transfer are numerically investigated. The coupled non-linear partial differential equations governing the flow field have been solved numerically using the spectral relaxation method (SRM).