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中文摘要：
通过对随行波表面特殊流场的数值模拟研究，探讨了随行波表面存在减阻降噪效果的内在机理。针对随行波表面流场的特点，在数值计算过程中对其计算域、计算网络及其流动参数进行了合理化的处理。模拟结果表明随行波表面存在减阻降噪效果的内在机理在于：随行波表面连续的沟槽结构使得壁面附近的流动在波谷处产生了稳定的二次流，即来流在随行波表面引发形成一排平行人工涡，从而使自由来流在平行人工涡上流动，而不与壳体表面接触，起到了类似“滚柱轴承”的作用，从而达到减阻降噪的目的。对随行波表面流场的模拟研究，对深入揭示其潜在减阻降噪机理具有一定的意义。
英文摘要：
Throu noise reduction mec gh ha the research on numerical simulation of nisms are explored. According to the traveling wave, researches on drag and characteristic of the grooved surface, computation domaln,grids and flow parameters are processed in the numerical simulation. The result of simulation demonstrates that the stabilized second-flow in the trough of traveling wave is generated owing to the continuous grooves, the fluid flow on the parallel man-made vortex without touching to the face is generated straightly as though it flows on the roller bearing. So the drag and noise reduction is obtained. Research on numerical simulation of grooved surface fluid field in the paper can give a significant reference to further research.
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