飞行器再入时,所经历的流态大体上为湍流流态。由于热化学烧蚀及粒子云侵蚀,端头呈凹陷形状,所以凹陷外形分离流场的计算就具有十分重要的意义。由于流动的分离和一些复杂的流场干扰现象的存在,使得流场的结构异常复杂。近几年来,国外虽然开展了这项研究工作,但是进展并不大,尤其是湍流的计算结果与实验相差悬殊。 Aircraft reentry, the flow experienced by the turbulent flow regime is generally. Due to the thermal chemical ablation and particle cloud erosion, the end is concave shape, so the calculation of the concave shape separation flow field is of great significance. Due to the separation of flow and the existence of some complicated flow field interference phenomena, the structure of the flow field is extremely complicated. In recent years, although this research work is carried out abroad, the progress is not large, especially the calculation results of turbulence are far from the experiments.