阻力
还原(数学)
涂层
材料科学
计算机科学
复合材料
数学
物理
机械
几何学
作者
Yakun Zhao,Huanyu Zhang,Shuyue Sun,Peng Tao,Gang Chen,Xinliang Tian
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2024-04-01
卷期号:36 (4)
被引量:1
摘要
We investigated the drag-reducing capabilities of a flexible coating on a rigid bluff body. Conducted in a wind tunnel, our experiments employed a rigid plate coated with a polyethylene membrane of various widths. The results indicated that the drag reduction, contingent on the membrane width, could reach up to 22.2%. Smoke-wire visualization corroborated the delay in flow separation and the emergence of narrower wake structures. This effect is ascribed to the self-adaptation of the flexible membrane to the fluid dynamics. Our study reveals that such passive flow control mechanisms are highly effective in complex, turbulent, three-dimensional flow conditions.
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