Direct numerical simulation and data analysis of a Mach 4.5 transitional boundary‐layer flow
Direct numerical simulation and data analysis of a Mach 4.5 transitional boundary‐layer flow
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DOI：
10.1063/1.868300
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发表时间：
1994-03
影响因子：
4.6
通讯作者：
S. Dinavahi;C. Pruett;T. Zang
中科院分区：
文献类型：
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作者：
S. Dinavahi;C. Pruett;T. Zang
本文描述了用时间直接数值模拟方法建立高速边界层流的层流-湍流过渡的高质量数据集，并基于雷诺应力输运方程进行了分析。遵循Pruett和Zang的理论。第一版。流体动力学，33,345(1992)]，在算法改进的帮助下，对沿空心圆柱体外部的4.5马赫轴向边界层流动的演变进行了数值模拟。从扰动层流初始状态开始，模拟从层流击穿到湍流状态的开始。Favre平均雷诺应力传递方程在广义曲线坐标下推导，然后专门用于手边的圆柱形几何。根据转捩过程各阶段的数值数据计算雷诺数应力和各种湍流量，如湍流动能和湍流马赫数。动能…
This paper describes the creation by temporal direct numerical simulation and the analysis based on the Reynolds stress transport equations of a high quality data set that represents the laminar–turbulent transition of a high‐speed boundary‐layer flow. Following Pruett and Zang [Theoret. Comput. Fluid Dyn. 3, 345 (1992)], and with the help of algorithmic refinements, the evolution of an axial, Mach 4.5 boundary‐layer flow along the exterior of a hollow cylinder is simulated numerically. From a perturbed laminar initial state, the well‐resolved simulation proceeds through laminar breakdown to the beginning of a turbulent flow regime. Favre‐averaged Reynolds stress transport equations are derived in generalized curvilinear coordinates and are then specialized to the cylindrical geometry at hand. Reynolds stresses and various turbulence quantities, such as turbulent kinetic energy and turbulent Mach number, are calculated from the numerical data at various stages of the transition process. The kinetic energy...