湍流相干结构机理研究(Ⅰ)──光滑壁边界层相干结构的物理模型*
On the Mechanism of Turbulent Coherent Structure(Ⅰ)——The Physical Model of the Coherent Structure for the Smooth Boundary Layer
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摘要: 本文主要讨论了光滑壁边界层相干结构的特性,建立了这种相干结构的物理模型,从理论上得到慢条宽度、猝发时间等物理量与动量厚度雷诺数的关系,其结果与实验结果[3'4'5'7]是相吻合的。Abstract: In this paper, based on the discussion of properties of the turbulent coherent structure for smooth boumdary layer a physical model has been established. The widthof slowly-moving streak line and bursting time of coherent structure expressed bymomentum thickness Reynolds mumber of boundary layer layer have been obtained,which are in agreement with The experimental data[3.4.5.7].
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Key words:
- turbulence theory /
- coherent structure /
- smooth boundary layer /
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