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Edney III type shock-shock interaction over a hemisphere cylinder
Aerospace Science and Technology ( IF 5.6 ) Pub Date : 2023-03-07 , DOI: 10.1016/j.ast.2023.108233
Nadia Kianvashrad, Doyle D. Knight

The interaction of an oblique shock wave with a bow shock in front of a hemisphere at Mach 14.6 is simulated. The configuration corresponds to an experiment performed at the Calspan University of Buffalo Research Center (CUBRC). Several simulations were performed to assess numerical uncertainty and to achieve agreement with the location of the computed and experimental peak surface pressure and heat transfer. Three simulations are presented for the former and two simulations are presented for the latter. Of the latter two simulations, the first simulation showed statistically stationary behavior in the surface pressure and heat transfer with unsteady periodic laminar behavior in the surface pressure and heat transfer, but the location of the computed peak surface pressure and heat transfer differed from the experiment by three degrees on the surface of the hemisphere. The second simulation with a different incident shock location showed close agreement between the locations of the computed and experiment peak surface heat transfer; however, the results in this case indicate unsteady non-periodic behavior.



中文翻译:

半球圆柱上的 Edney III 型激波-激波相互作用

模拟了斜激波与半球前方弓形激波以 14.6 马赫的相互作用。该配置对应于在 Calspan 大学布法罗研究中心 (CUBRC) 进行的实验。进行了几次模拟以评估数值不确定性并与计算和实验峰值表面压力和热传递的位置达成一致。为前者提供了三个模拟,为后者提供了两个模拟。在后两个模拟中,第一个模拟显示了表面压力和热传递的统计平稳行为,以及表面压力和热传递的不稳定周期性层流行为,但是计算出的峰值表面压力和传热的位置与半球表面的实验相差三度。具有不同入射冲击位置的第二次模拟显示计算和实验峰值表面传热的位置之间非常一致;然而,这种情况下的结果表明不稳定的非周期性行为。

更新日期:2023-03-10
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