超疏水表面减阻水洞实验及减阻机理研究  

Investigation about drag reduction water tunnel experiment and mechanism of superhydrophobic surface

作　　者：黄桥高[1] 潘光[1] 武昊[1] 胡海豹[1] 宋保维[1] 

机构地区：[1]西北工业大学航海学院,西安710072

出　　处：《实验流体力学》2011年第5期21-25,共5页Journal of Experiments in Fluid Mechanics

基　　金：国家自然科学基金(50835009);陕西省自然科学基础研究计划(2010JQ1009);西北工业大学科技创新基金(2008KJ02012);西北工业大学研究生创业种子基金(Z2011033)

摘　　要：针对超疏水表面功能材料在流动减阻方面的潜在应用,通过水洞实验研究了具有超疏水表面航行器模型的阻力特性,获得了其减阻特性曲线,并得到了超过20%的减阻效果。对超疏水表面进行了表面能特性和滑移特性分析,认为表面组分中的疏水基团和表面微观结构分别导致了超疏水表面的低表面能效应和壁面滑移效应,两者是超疏水表面具有减阻作用的直接原因。For the possible drag reduction application of superhydrophobic surface,the drag characteristics of vehicle models with superhydrophobic surface is studied by water tunnel experiment.The drag characteristic curves and excess 20% experimental drag reduction effect are acquired.The surface energy specialty and slip specialty of superhydrophobic surface are analyzed.The results indicate that the hydrophobic fragments and microstructure bring about low surface energy effect and wall slip effect respectively,which are efficient reasons that superhydrophobic surface possesses drag reduction effect.

关 键 词：超疏水表面 水洞实验 表面能 微观结构 减阻机理 

分 类 号：O357.5[理学—流体力学]