Large-Eddy Simulations of Compressible Mixing Layers
Large-Eddy Simulations of Compressible Mixing Layers
复制标题
可压缩混合层的大涡模拟
DOI：
10.1007/978-1-4020-2313-2_43
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
C. L. Ribault
中科院分区：
文献类型：
--
作者：
C. L. Ribault
采用大涡模拟方法研究了不同对流马赫数下可压缩混合层的空间演化过程。研究了两种亚网格模型：动态Smagorinsky模型和动态混合模型。首先进行了低对流马赫数0.16的模拟。平均场和雷诺应力的预测与实验结果吻合良好。然后，增加对流马赫数，并在0.5和0.84的较高对流马赫数下进行模拟。预测了增长率和湍流强度随对流马赫数的减小。然后给出了关于产量和输运项减少的结果。
Large eddy simulations (LES) are performed to study spatially evolving compressible mixing layers at different convective Mach numbers. Two subgrid models are investigated: the dynamic Smagorinsky model and the dynamic mixed model. Simulations at the low convective Mach number of 0.16 are first performed. The predictions of the mean field and of the Reynolds stresses are in good agreement with experimental results. Then, the convective Mach number is increased and simulations are performed at the higher convective Mach numbers of 0.5 and 0.84. The decrease of the growth rate and of the turbulence intensities with the convective Mach number is predicted. Results on the decrease of the production and of the transport terms are then presented.