The effect of variable properties of air on the boundary layer for a moving continuous cylinder

The laminar boundary layer flow on an isothermal moving flat sheet and moving cylinder was analyzed by finite differences including variation of air properties in the range of air temperature at the cylinder surface of 66-1093 C. As to the constant property case, the moving cylinder problem was solved also by an integral method to test the accuracy of the finite difference scheme that was employed. The constant property solutions for both moving flat sheet and moving cylinder are in good agreement with other reported findings. The effect of air property variations is manifested in the increase of local skin friction coefficient and local Nusselt number with increasing air temperature at the cylinder surface. The results are presented in a practical range of Reynolds number.