Nonsteady axisymmetric stagnation point flow with hard blowing

The heat transfer to the wall in aerodynamic heating which can be reduced by hard blowing was studied. Hard blowing at the stagnation point blows off the boundary layer. The flow field is made up of three regions. Region consists of injected flow which is essentially nonviscous, is inviscid but rotational and there is a first approximation which is valid only near the wall, for hard blowing with a velocity one order higher than the usual vertical component of velocity in the boundary layer. Regions 2 and 3 refer to a shear layer and outer region respectively. Regions 1 and 2 are approximately of order (Re) to the minus 1/2 power which validates boundary layer approximations in these regions. In the singular perturbation solution, the viscous term containing the highest derivatives is eliminated from the equation and satisfies only the boundary condition at the wall.