Drag reduction in ultrahydrophobic channels with micro-nano structured surfaces

作     者：LU Si YAO ZhaoHui HAO PengFei FU ChengSong 

作者机构：School of AerospaceTsinghua UniversityBeijing 100084China 

出 版 物：《Science China(Physics,Mechanics & Astronomy)》 (中国科学:物理学、力学、天文学(英文版))

年 卷 期：2010年第53卷第7期

页      面：1298-1305页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 10872106) 

主　　题：ultrahydrophobic surfaces hierarchical structure laminar flow drag reduction velocity slip 

摘      要：A series of experiments have been performed to demonstrate the significant drag reduction of the laminar flow in the ultrahydrophobic channels with dual-scale micro-nano structured ***,in previous experiments,the ultrahydrophobic surfaces were fabricated with micro-structures or nano-structures and the channels were on the *** the drag reduction in macro-scale channels few reports are *** a new method was developed to fabricate ultrahydrophobic surfaces with micro-nano hierarchical structures made from carbon *** drag reductions up to 36.3% were observed in the macro-channels with ultrahydrophobic *** micro-PIV was used to measure the flow velocity in *** with the traditional no-slip theory at walls,a significant slip velocity was observed on the ultrahydrophobic surfaces.