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航天飞机在55公里高度以上飞行时,处于高马赫数,中、低雷诺数的粘性干扰区(粘性干扰参数(?)=0.005～O.08)。传统的无粘流/边界层修正法(3DV)已不适于计算无粘/有粘强干扰的情况,而要采用全粘性激波层的 PNS 法。本文简要的介绍了美国航天飞机研制过程中采用的3DV 和 PNS 的计算方法,对航天飞机简化外形和钝锥体的粘性干扰效应进行了分析和讨论。研究结果表明,PNS 法是解决航天飞机高超声速粘性干扰效应的较为有效的数值模拟方法。
Space shuttle at 55 kilometers altitude flight, in the high Mach number, low and medium Reynolds number of sticky interference zone (sticky interference parameters (?) = 0.005 ~ O.08). Conventional viscous flow / boundary layer correction (3DV) is not suitable for the calculation of non-sticky / sticky strong interference, but the use of all-viscous shock wave PNS method. This article briefly introduces the calculation methods of 3DV and PNS used in the development of the U.S. space shuttle, and analyzes and discusses the simplified profile of the shuttle and the viscous interference effect of the blunt cone. The results show that the PNS method is a more effective numerical simulation method to solve the hypersonic viscous interference effect of a space shuttle.