The last, through experiments of flume and water tunnel, the liquid slip effect on drag-reduction over super -hydrophobic surface for various flow conditions was researched.
通过水槽和水洞的实验，研究了超疏水性表面在不同流动条件下的减阻特性。
The researches of drag reduction by grooved surface in water are mostly concentrated in experimentations recently, and researches in theory and numerical calculation are lacked.
近年来对于水下条纹沟槽表面减阻的研究多集中在试验方面，理论分析和数值计算进行的却不多。
It is employed the concept of multi-scale coherent structures to study the mechanism of riblet surface drag reduction in turbulent boundary layer.
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。
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