Boundary Layer Slip and Heat Transfer in Stagnation Point Flow over a Steady Stretching Surface Embedded in a Porous Medium with Heat Sources
M. Ferdows
College of Engineering and Science, Louisiana Tech University, Ruston, Louisiana, 71272, USA
D. Liu *
College of Engineering and Science, Louisiana Tech University, Ruston, Louisiana, 71272, USA
B. R. Ramachandran
College of Engineering and Science, Louisiana Tech University, Ruston, Louisiana, 71272, USA
*Author to whom correspondence should be addressed.
Abstract
The aim of this work is to study the 2-D boundary layer stagnation point flow from a stretching surface embedded in a porous medium with velocity/thermal slip conditions on the wall and heat generation or absorption. Under boundary layer approximations, the governing boundary layer equations of the problem can be reduced to two ordinary differential equations and solved by using Maple code for some values of the problem parameters. The influences of problem parameters on the flow characteristics such as velocity and temperature profiles, skin friction and the Nusselt number are clearly discussed graphically and in tables. It is found that the flow field is influenced greatly by the ratio of the free stream velocity (ue) and the stretching velocity (uw) as well as the velocity/thermal slip parameter. We have compared our results with open literature and found excellence agreement.
Keywords: Velocity slip parameter, thermal slip parameter, stagnation point, stretching surface, porous medium