Numerical Investigation of Shock/Vortex Interaction in Hypersonic Thermochemical Nonequilibrium Flow
Numerical Investigation of Shock/Vortex Interaction in Hypersonic Thermochemical Nonequilibrium Flow
复制标题
高超声速热化学非平衡流中冲击/涡相互作用的数值研究
DOI：
10.2514/2.3438
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发表时间：
1997
影响因子：
1.6
通讯作者：
H. Nagatomo
中科院分区：
文献类型：
--
作者：
S. Yamamoto;Norinao Takasu;H. Nagatomo
本文对Edney分类的考虑热化学非平衡效应的高超声速非定常激波/激波干扰流进行了数值研究。所用的数值方法是由四阶紧致MUSCL TVD格式、最大二阶LU-SGS格式和AUSM_DV格式组成的，不仅可以精确地捕捉激波，而且可以精确地捕捉涡。基于Park模型的双温模型考虑了热化学非平衡。计算了几种流动条件下的氮气流量。结果表明，激波/激波干涉的类型强烈地依赖于冲击波的位置和激波的间隔距离。最后，对与热化学非平衡效应相关的非定常流动特性，特别是涉及激波、压缩波、涡及其相互作用的复杂流动结构进行了初步研究。
A numerical investigation of unsteady hypersonic shock/shock interference flows classified by Edney considering thermochemical nonequilibrium effect is presented. The numerical method used is composed of the 4th-order compact MUSCL TVD scheme, the maximum 2nd-order LU-SGS scheme, and the AUSM_DV scheme for capturing not only shocks but vortices accurately. The two-temperature model based on the Park model is taken thermochemical nonequilibrium into consideration. The nitrogen flows under several flow conditions are calculated. The obtained results show that the type of the shock/shock interference is strongly dependent on the location of the impinging shock and the shock standoff distance. Finally, unsteady flow characteristics associated with thermochemical nonequilibrium effect, especially, very complicated flow structure involving shocks, compression waves, vortices, and their interactions, are preliminary investigated.