超疏水性表面上的流体滑移及其减阻应用(英文)  

Liquid Slip over Super-Hydrophobic Surface and Its Application in Drag Reduction

作　　者：赵加鹏[1] 石秀华[1] 耿兴国[2] 侯志敏[2] 

机构地区：[1]西北工业大学航海学院,西安710072 [2]西北工业大学应用物理系,西安710072

出　　处：《船舶力学》2009年第3期325-330,共6页Journal of Ship Mechanics

摘　　要：文章从边界层理论出发,探讨了超疏水性表面的微观结构模型,分析了流体的滑移长度对粘性阻力的影响机理。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。实验结果表明:在低雷诺数流动下,最大减阻量可达到8.76%,在高雷诺数流动下,最大减阻量可达到2.63%。Based on boundary layer theory, the microscopic structure of the super-hydrophobic surface and liquid slip phenomenon was investigated, and the impact of fluid slip length and slip velocity on viscous drag was analyzed. 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. The results show that the greatest amount of drag-reduction can be achieved 8.76% at the low Reynolds number,and the greatest amount of drag-reduction can be achieved 2.63% at the high Reynolds number.

关 键 词：边界层 超疏水性 滑移 减阻 雷诺数 

分 类 号：O35[理学—流体力学]