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On the influence of non equilibrium in the free stream conditions of high enthalpy oxygen flows around a double-cone
Acta Astronautica ( IF 3.5 ) Pub Date : 2022-09-13 , DOI: 10.1016/j.actaastro.2022.09.017
Davide Ninni , Francesco Bonelli , Gianpiero Colonna , Giuseppe Pascazio

This work presents a detailed analysis of the shock wave/boundary layer interaction in hypersonic flows around a double-cone. Numerical simulations have been carried out by solving the axisymmetric Navier–Stokes equations for an oxygen mixture. Thermochemical non-equilibrium is taken into account by employing the multi-temperature model (mT) proposed by Park and the State-to-State model (StS). The occurrence of surface processes is also analyzed considering both non-catalytic and fully-catalytic wall models. It is shown that the evaluation of correct free stream conditions is fundamental for the prediction of the separation extent and the corresponding heat transfer in high enthalpy conditions.



中文翻译:

高焓氧绕双锥自由流动条件下非平衡的影响

这项工作详细分析了双锥体周围高超声速流中的冲击波/边界层相互作用。通过求解氧混合物的轴对称 Navier-Stokes 方程来进行数值模拟。通过采用 Park 提出的多温度模型 (mT) 和州对州模型 (StS) 来考虑热化学非平衡。还考虑了非催化和全催化壁模型分析了表面过程的发生。结果表明,正确的自由流条件的评估对于预测分离程度和高焓条件下的相应传热至关重要。

更新日期:2022-09-13
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