Significant and stable drag reduction with air rings confined by alternated superhydrophobic and hydrophilic strips
Hu, Haibao1; Wen, Jun1; Bao, Luyao1; Jia, Laibing1; Song, Dong1; Song, Baowei1; Pan, Guang1; Michele Scaragg2,3; Daniele Dini3; Xue QJ(薛群基)4
刊名Science Advances
2017
卷号3期号:9页码:e1603288(1-9)
ISSN号2375-2548
DOI10.1126/sciadv.1603288
英文摘要

Superhydrophobic surfaces have the potential to reduce the viscous drag of liquids by significantly decreasing friction at a solid-liquid interface due to the formation of air layers between solid walls and interacting liquids. However, the trapped air usually becomes unstable due to the finite nature of the domain over which it forms. We demonstrate for the first time that a large surface energy barrier can be formed to strongly pin the three-phase contact line of air/water/solid by covering the inner rotor of a Taylor-Couette flow apparatus with alternating superhydrophobic and hydrophilic circumferential strips. This prevents the disruption of the air layer, which forms stable and continuous air rings. The drag reduction measured at the inner rotor could be as much as 77.2%. Moreover, the air layers not only significantly reduce the strength of Taylor vortexes but also influence the number and position of the Taylor vortex pairs. This has strong implications in terms of energy efficiency maximization for marine applications and reduction of drag losses in, for example, fluid transport in pipelines and carriers.

学科主题材料科学与物理化学
资助项目材料表面界面研究组
语种英语
WOS记录号WOS:000411592600005
资助机构the National Natural Science Foundation of China (51679203;51335010;21434009;11372305) ;the Natural Science Basic Research Plan in Shaanxi Province of China (2016JM1002);D.D. would also like to acknowledge the support received from the Engineering and Physical Sciences Research Council under Established Career Fellowship grant EP/N025954/1
内容类型期刊论文
源URL[http://ir.licp.ac.cn/handle/362003/22516]  
专题兰州化学物理研究所_固体润滑国家重点实验室
通讯作者Hu, Haibao; Daniele Dini; Zhou F(周峰)
作者单位1.Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Peoples R China
2.Univ Salento, Dept Engn Innovat, I-73100 Monteroni Lecce, Italy
3.Imperial Coll London, Dept Mech Engn, South Kensington Campus,Exhibit Rd, London SW7 2AZ, England
4.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Hu, Haibao,Wen, Jun,Bao, Luyao,et al. Significant and stable drag reduction with air rings confined by alternated superhydrophobic and hydrophilic strips[J]. Science Advances,2017,3(9):e1603288(1-9).
APA Hu, Haibao.,Wen, Jun.,Bao, Luyao.,Jia, Laibing.,Song, Dong.,...&周峰.(2017).Significant and stable drag reduction with air rings confined by alternated superhydrophobic and hydrophilic strips.Science Advances,3(9),e1603288(1-9).
MLA Hu, Haibao,et al."Significant and stable drag reduction with air rings confined by alternated superhydrophobic and hydrophilic strips".Science Advances 3.9(2017):e1603288(1-9).
个性服务
查看访问统计
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。


©版权所有 ©2017 CSpace - Powered by CSpace