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PSE and Spatial Biglobal Instability Analysis of Reduced Scale and Flight HIFiRE-5 Geometry

机译：降低规模和飞行Hifire-5几何的PSE和空间Biglobal稳定性分析

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The purpose of this paper is to provide linear parabolized stability equation, nonlinear parabolized stability equation, and secondary instability analysis within a hypersonic boundary layer using the in-house stability code EPIC and a spatial biglobal code. The geometries being investigated are the full-scale and 38.1% scale HIFiRE-5 models. The objectives are to match flight conditions experienced by the most recent HIFiRE-5 test flight as well as to investigate the 38.1% scale model for wind tunnel comparison. Three-dimensional instabilities are investigated with the linear parabolized stability equations and further nonlinear and secondary instability analysis is performed for stationary crossflow. N-factors of the type-I and type-II secondary instabilities show that they become the dominant mechanisms in the nonlinearly modified flowfield. Results for the two configurations of the HIFiRE-5 geometry that are presented in this paper will provide insight for the future computational and experimental work at Texas A&M University.
机译：本文的目的是提供线性抛物稳定方程，非线性剖析稳定性方程和使用内部稳定码史诗和空间Biglobal代码在超声边界层内的次级不稳定性分析。正在研究的几何形状是满量程和38.1％的SPIFIRE-5型号。目标是匹配最近的Hifire-5测试飞行所经历的飞行条件，并研究了风洞比较的38.1％规模模型。利用线性抛物稳定性方程研究了三维不稳定性，并对静止的横流进行进一步的非线性和次级不稳定性分析。 I Type-I和II型二级稳定性的N因素表明，它们成为非线性改性流域中的主导机制。结果本文提出的Hifire-5几何形状的两种配置将为德克萨斯A＆M大学的未来计算和实验工作提供洞察力。

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