Significant and stable drag reduction with air rings confined by alternated superhydrophobic and hydrophilic strips | |
Department | 固体润滑国家重点实验室 |
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; Zhou F(周峰)4; Zhou F(周峰) | |
2017 | |
Source Publication | Science Advances |
ISSN | 2375-2548 |
Volume | 3Issue:9Pages:e1603288(1-9) |
Abstract | 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. |
Subject Area | 材料科学与物理化学 |
DOI | 10.1126/sciadv.1603288 |
Funding Organization | 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 |
Indexed By | SCI |
Language | 英语 |
Funding Project | 材料表面界面研究组 |
compositor | 第四作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/22516 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Hu, Haibao; Daniele Dini; Zhou F(周峰) |
Affiliation | 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 |
Recommended Citation 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). |
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e1603288.full.pdf(2728KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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