Investigation of turbulent separation in a forward-facing step flow
Investigation of turbulent separation in a forward-facing step flow
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前向阶梯流中湍流分离的研究
DOI：
10.1088/1742-6596/318/2/022031
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Pearson D
中科院分区：
文献类型：
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作者：
Pearson D
本文用实验数据研究了前台阶上下游分离区的关系。高速粒子图像测速（PIV）数据被用来显示的壁面剪应力的迎面而来的边界层和逆流上游的步骤的流向位置之间的相关性。与相关的时间延迟是一致的平均对流速度在较低的边界层。这表明可以使用向边界层中适当添加动量来控制台阶上游分离的空间范围。
The relation between the upstream and downstream regions of separation of the flow over a forward-facing step is investigated using experimental data. High-speed Particle Image Velocimetry (PIV) data is used to show a correlation between the wall shear stress of the oncoming boundary layer and the streamwise location of reverse flow upstream of the step. The time delay associated with the correlation is consistent with average convection velocities in the lower boundary layer. This suggests that appropriate addition of momentum into the boundary layer could be used to control the spatial extent of the separation upstream of the step.
浸没在湍流边界层中的前向台阶的流动分离特性
DOI：
--
发表时间：
2009
期刊：
Proceeding of Sixth International Symposium on Turbulence and Shear Flow Phenomena
影响因子：
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作者：
M. Sherry;D. L. Jacono;J. Sheridan;R. Mathis;I. Marusic
通讯作者：
I. Marusic