Nonstationary laminar boundary layer induced behind blast waves and detonation waves

The transformed coordinates devised by Mirels and Hamman (1962) have been modified in such a way that the resulting nonstationary boundary layer equations become applicable behind both blast and detonation waves. Numerical solutions for the transformed equations were obtained. The results reveal that the Prandtl number has a profound influence on the boundary layer flow. It controls a velocity overshoot at the outer edge of the boundary layer for the case of Pr less than 1, and a boundary layer flow reversal near the wall for the case of Pr greater than 1. The results also show that the viscous exponent has a significant effect on the wall shear stresses and heat transfer, and that the wall temperature affects the position of the beginning of the flow reversal. For the wall heat transfer, a comparison was made between the present results and experimental data, and good agreement was obtained.