Reattachment of a Compressible Turbulent Free Shear Layer
Reattachment of a Compressible Turbulent Free Shear Layer
复制标题
DOI：
10.2514/3.51047
复制
发表时间：
1982
期刊：
影响因子：
2.5
通讯作者：
G. Settles;David R. Williams;B. K. Baca;S. Bogdonoff
中科院分区：
文献类型：
--
作者：
G. Settles;David R. Williams;B. K. Baca;S. Bogdonoff
本文描述了一种将马赫数为2.92、高雷诺数的二维自由湍流剪切层重新附着在倾斜表面上的实验研究。测试几何形状是专门为创建未受干扰的自由剪切层而设计的，该自由剪切层形成了重新附着过程的明确初始条件。用平均压力探头和热线风速计进行了详细的流场测量。结果表明，自由剪切层在平均剖面相似程度上达到了平衡状态，并支持了前人关于流动再附着可以根据自由相互作用概念进行关联的结论。再附着下游的再发展湍流边界层显示出极快的恢复，似乎是沿着局部平衡的路径进行的。
An experimental study is described in which a two-dimensional free turbulent shear layer at Mach 2.92 and a high Reynolds number is reattached to an inclined surface. The test geometry is designed specifically to create an undisturbed free shear layer which forms a well-defined initial condition for the reattachment process. Detailed flowfield surveys were made with mean pressure probes and the hot-wire anemometer. The results indicate that the free shear layer reached an equilibrium condition in terms of mean profile similarity, and support previous conclusions that flow reattachment may be correlated in terms of the free interaction concept. The redeveloping turbulent boundary layer downstream of reattachment shows an extremely rapid recovery which seems to proceed along a path of local equilibrium.