TY - JOUR
TI - A new numerical investigation of some thermo-physical properties on unsteady MHD non-Darcian flow past an impulsively started vertical surface
AU - Motsa Sandile Sydney
AU - Animasaun Isaac L
JN - Thermal Science
PY - 2015
VL - 19
IS - 11
SP - 249
EP - 258
PT - Article
AB - The behaviour of unsteady non-Darcian magnetohydrodynamic fluid flow past an  impulsively started vertical porous surface is investigated. The effect of  thermophoresis due to migration of colloidal particles in response to a  macroscopic temperature gradient is taken into account. It is assumed that  both dynamic viscosity and thermal conductivity are linear functions of  temperature. The governing equations are non-dimensionalized by using  suitable similarity transformation which can unravel the behaviour of the  flow at short time and long time periods. A novel iteration scheme, called  bivariate spectral local linearization method is developed for solving the  corresponding systems of highly non-linear partial differential equations.  The results of the numerical solutions obtained are presented graphically and  analyzed for the effects of the various important parameters entering into  the problem on velocity, temperature, and concentration field within the  boundary layer.