Effects of some thermo-physical parameters on free convective heat and mass transfer over vertical stretching surface at absolute zero

Effects of some thermo-physical parameters on free convective heat and mass transfer over a vertical stretching surface at the lowest level of heat energy in the presence of suction are investigated in the presence of suction. At constant function of thermal conductivity, the dynamic viscosity of the fluid is assumed to vary as a linear function of temperature. A similarity transformation is applied to reduce the governing equations to a coupled ordinary differential equations corresponding to the momentum, energy and concentration equations. These equations along with the boundary conditions are also solved numerically using shooting method along with Runge-Kutta-Gill method. The effects of thermo-physical parameters on the velocity, temperature and concentration profiles are graphically shown. It is found that with an increase in the value of temperature-dependent fluid viscosity parameter, the velocity increases while the temperature and concentration decrease across the flow region. Dufour, Soret, Frank-Kamenetskii, Prandtl and Schmidt numbers activation energy also has an effect. Numerical data for the local skin-friction coefficient, the local Nusselt number and the local Sherwood number have been tabulated for various values of certain parameter conditions.