Effect of the freestream turbulence scale and the leading edge shape on boundary layer laminar-turbulent transition

被引：0
作者：
S. V. Zhigulev
A. A. Uspenskii
M. V. Ustinov
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来源：
Fluid Dynamics | 2009年 / 44卷
关键词：
laminar-turbulent transition; turbulence; receptivity; boundary layer;
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摘要：
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.
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页码：31 / 44
页数：13
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