Effect of the freestream turbulence scale and the leading edge shape on boundary layer laminar-turbulent transition
Effect of the freestream turbulence scale and the leading edge shape on boundary layer laminar-turbulent transition
复制标题
自由流湍流尺度和前缘形状对边界层层流-湍流转变的影响
DOI：
10.1134/s0015462809010049
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发表时间：
2009
期刊：
影响因子：
0.9
通讯作者：
M. Ustinov
中科院分区：
文献类型：
--
作者：
S. V. Zhigulev;A. A. Uspenskii;M. Ustinov
本文研究了平板前缘形状和湍流尺度对网格湍流引起的平板边界层层流-湍流转捩的影响。在实验中，湍流尺度改变了三个因素和钝度半径的边缘的一个因素的四个，所有其他因素是固定的。结果表明，在锐边平板上，湍流脉动增长率和层流-湍流转捩点非单调地依赖于湍流尺度。在钝板上，转捩发生得比在尖板上早得多。
The effect of the leading edge shape and the turbulence scale on laminar-turbulent transition in the flat-plate boundary layer due to grid turbulence is investigated. In the experiments, the turbulence scale was changed by a factor of three and the bluntness radius of the edge by a factor of four, all other factors being fixed. It is shown that on the plate with a sharp edge the fluctuation growth rate and the laminar-turbulent transition point depend nonmonotonically on the turbulence scale. On the blunt plate transition occurs considerably earlier than on the sharp plate.
影响因子：
3.7
作者：
Matsubara, M;Alfredsson, PH
通讯作者：
Alfredsson, PH