通过理论分析、实验测量和数值模拟,研究高超声速粘性相互作用对实验段自由流静压测量的影响。研究表明:由于粘性相互作用,高焓激波风洞实验段平板静压测量值远高于实际自由流静压。在热化学非平衡流情况下,经典的粘性相互作用参数和经验公式具有局限性。
Hypersonic viscous interaction effects on measurement of free stream pressure in test section are studied through theoretical analysis, experiment measurement and numerical simulation. The results show that the pressure value measured at plate probe is much higher than that of free steam in high enthalpy shock tunnel test section. The classical viscous interaction parameter and experiential formulae are limitative in thermochemical nonequilibrium flow.