The drag reduction of plane-surfaces with V-shaped grooves is given out by direct numerical simulation, and the drag reduction mechanism in the base of the secondary flow theory is suggested.
利用直接数值模拟方法求得平板上V—型条纹表面上的降阻情况，并给出基于二次流动理论的降阻机理。
Based on our flow visualizations, a new mechanism of drag reduction is proposed. The device has been refined and net drag reduction has been achieved.
建立在自己流动显示的基础上，提出了新的减阻机理，改进了设计，并获得较好的减阻效果。
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。
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