Modified Crocco-Lees Mixing Theory for Supersonic Separated and Reattaching Flows

摘要: Re-examination of the Crocco-Lees method has shown that the previous quantitative disagreement between theory and experiment in region flow up to separation was caused primarily by improper C(K) relation assumed. A new correlation, based on low-speed theoretical experimental data supersonic results, been developed found be satisfactory for accurate calculation of two-dimensional laminar super sonic flows separation. A study separated reattaching regions led a physical model which incorporates concept "dividing" streamline results experiment. According this model, viscous momentum transport is essential mechanism zone beginning reattachment, while reattachment process is, contrary, an essentially inviscid process. This translated into language using semi-empirical approach, approximate F(K) relations have determined regions. The analysis applied problem shock wave-laminar boundary layer interaction, satisfactory quantitative agreement with achieved.