将湍流多尺度相干结构的概念引入沟槽壁面湍流边界层减阻机理的研究。
It is employed the concept of multi-scale coherent structures to study the mechanism of riblet surface drag reduction in turbulent boundary layer.
用流向速度分量信号的多尺度子波系数作为特征量检测平板湍流边界层多尺度相干结构。
The multi-scale coherent eddy structure in turbulent boundary layer is detected through taking multi-scale wavelet coefficient of stream velocity component signal as characteristic quantity.
利用子波系数的瞬时强度因子、瞬时平坦因子和平坦因子检测平板湍流边界层中的多尺度相干结构。
It is represented that the coherent structures and intermittency are identified by multi-scale flatness factor based on locally averaged velocity structure functions.
圆柱尾迹与边界层相互作用，改变了近壁区域多尺度相干结构的平均演化过程，也即速度的变化过程。
The conditional average phases of the multi-scale coherent eddy structures in the logarithmic area are changed by the cylinder wakes, which means that the variety of the velocity is changed.
圆柱尾迹与边界层相互作用，改变了近壁区域多尺度相干结构的平均演化过程，也即速度的变化过程。
The conditional average phases of the multi-scale coherent eddy structures in the logarithmic area are changed by the cylinder wakes, which means that the variety of the velocity is changed.
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