Drag Reduction by Leidenfrost Vapor Layers
Drag Reduction by Leidenfrost Vapor Layers
复制标题
DOI：
10.1103/physrevlett.106.214501
复制
发表时间：
2011-05-23
影响因子：
8.6
通讯作者：
Thoroddsen, Sigurdur T.
中科院分区：
文献类型：
--
作者：
Vakarelski, Ivan U.;Marston, Jeremy O.;Thoroddsen, Sigurdur T.
我们展示并量化了一种高效的减阻技术，该技术利用莱顿弗罗斯特效应在液体中移动的加热固体球的表面上创建连续且坚固的润滑蒸汽层。使用高速视频，我们表明这种蒸汽层可以减少 85% 以上的流体阻力。这些结果似乎接近基于气层润滑的不同方法减阻的最终极限，可以刺激相关节能技术的发展。
We demonstrate and quantify a highly effective drag reduction technique that exploits the Leidenfrost effect to create a continuous and robust lubricating vapor layer on the surface of a heated solid sphere moving in a liquid. Using high-speed video, we show that such vapor layers can reduce the hydrodynamic drag by over 85%. These results appear to approach the ultimate limit of drag reduction possible by different methods based on gas-layer lubrication and can stimulate the development of related energy saving technologies.