The design of the thermal protection system requires high-precision and high-reliability CFD simulation for validation. To accurately predict the hypersonic aerodynamic heating, an overall simulation strategy based on mutual selection is proposed. Foremost, the grid criterion based on the wall cell Reynolds number is developed. Subsequently, the dependence of the turbulence model and the discretization scheme is considered. It is suggested that the appropriate value of wall cell Reynolds number is 1 through careful comparison between one another and with the available experimental data. The excessive number of cells is not recommended due to time-consuming computation. It can be seen from the results that the combination of the AUSM+ discretization scheme and the Spalart-Allmaras turbulence model has the highest accuracy. In this work, the heat flux error of the stagnation point is within 1%, and the overall average relative error is within 10%.

中文翻译：

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高音速空气动力学加热在钝的Biconic周围的CFD模拟策略

热保护系统的设计需要高精度和高可靠性的CFD仿真来进行验证。为了准确预测高超声速空气动力加热，提出了一种基于相互选择的整体模拟策略。首先，开发了基于壁单元雷诺数的网格判据。随后，考虑了湍流模型和离散化方案的依赖性。通过相互之间以及与可用实验数据的仔细比较，建议壁细胞雷诺数的适当值为1。由于计算时间过长，不建议使用过多的单元格。从结果可以看出，AUSM +离散化方案和Spalart-Allmaras湍流模型的组合具有最高的准确性。在这项工作中，