Friction and Heat transfer in Slip flow Boundary Layer at Constant Heat Flux Boundary Conditions

摘要

This paper presents a new analysis of friction and heat transfer in the slip flow boundary layer at constant heat flux boundary conditions for both liquids and gases. By using similarity solution, the fundamental equations of the boundary layer are transformed to ordinary differential equations containing a prandtl number. These ordinary differential equations are solved numerically by using a fourth order Runge- Kutta and shooting method. Consequently, the velocity profiles, temperature profiles, the wall shear stress and the local Nusselt number exhibit a dependence on the slip coefficient. It is shown that laminar boundary layer with slip flow can sufficiently reduce wall friction through slip flow conditions for both cases and increase heat transfer rate in liquids at constant heat flux boundary conditions.