journal article·2021-01-27

Bioinspired Cavity Regulation on Superhydrophobic Spheres for Drag Reduction in an Aqueous Medium

Changzhuang Yao, Jingjing Zhang, Zihan Xue, Kang Yu, Xinping Yu, Xiaoxiao Yang, Qiulin Qu, Wenbiao Gan, Jingming Wang, Lei Jiang

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Abstract

Hydrodynamic drag not only results in high-energy consumption for water vehicles but also impedes the increase of vehicle speed. The introduction of a low-viscosity gas lubricating film is assumed to be an effective and promising method to reduce hydrodynamic drag. However, the poor stability of the gas film and massive extra energy consumption restricts the practical application of the gas lubricating method. Herein, inspired by the microhairs with low surface energy wax covering the abdomen of water spiders, superhydrophobic sphere surfaces were designed. Attributed to numerous neighboring nanoneedle branches with low surface energy chemicals, an air-entrained cavity with a large surface area was captured and stabilized by the superhydrophobic sphere, changing its shape from a sphere to a streamlined body. The cavity continued attaching to the superhydrophobic sphere without bursting at a depth of 70.0-90.0 cm underwater and reduced the hydrodynamic drag by more than 90%. This work provides a simple, cost-effective, and energy-efficient way to stabilize the underwater gas-liquid interface to achieve a reduction in the hydrodynamic drag.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Surface Modification and Superhydrophobicity · Fluid Dynamics and Heat Transfer · Adhesion, Friction, and Surface Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

CAS Key Laboratory of Bio-inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China

Future Technology College, University of Chinese Academy of Sciences, Beijing 100190, P. R. China

Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, P. R. China

BAIC Motor Corporation Ltd., Beijing 101300, P. R. China

Key Laboratory of Advanced Technology of Intelligent Unmanned Flight System of Ministry of Industry and Information Technology, Beihang University, Beijing 100191, P. R. China

Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, P. R. China

School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, P. R. China

School of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China

Funding

National Natural Science Foundation of China

References (51)

Show source-provided references
1. 10.1146/annurev.fl.23.010191.00043310.1146/annurev.fl.23.010191.000433 ↗
2. 10.1146/annurev.fl.10.010178.00040310.1146/annurev.fl.10.010178.000403 ↗
3. 10.1002/adfm.20120368310.1002/adfm.201203683 ↗
4. 10.1146/annurev.fluid.40.111406.10215610.1146/annurev.fluid.40.111406.102156 ↗
5. 10.1002/adma.20090441110.1002/adma.200904411 ↗
6. 10.1038/nmat85710.1038/nmat857 ↗
7. 10.3354/meps0886810.3354/meps08868 ↗
8. 10.1039/C9SM01025D10.1039/C9SM01025D ↗
9. 10.1039/C4SM00368C10.1039/C4SM00368C ↗
10. 10.1146/annurev-fluid-121108-14550410.1146/annurev-fluid-121108-145504 ↗
11. 10.1146/annurev-fluid-010814-01465810.1146/annurev-fluid-010814-014658 ↗
12. 10.1016/j.powtec.2003.09.00510.1016/j.powtec.2003.09.005 ↗
13. Skudarnov, P. V.; Lin, C. X. In Density Ratio and Turbulence Intensity Effects in Microbubble Drag Reduction Phenomenon, Proceedings of the ASME Fluids Engineering Division Summer Conference - 2005, 1, Pts A and B, 2005; pp 17–22.10.1115/FEDSM2005-77075 ↗
14. 10.1103/PhysRevLett.106.21450110.1103/PhysRevLett.106.214501 ↗
15. 10.1103/PhysRevLett.117.11450310.1103/PhysRevLett.117.114503 ↗
16. 10.1063/1.499329810.1063/1.4993298 ↗
17. 10.1038/nature1141810.1038/nature11418 ↗
18. 10.1126/sciadv.160068610.1126/sciadv.1600686 ↗
19. 10.1002/adma.20140088310.1002/adma.201400883 ↗
20. 10.1002/adfm.20150523410.1002/adfm.201505234 ↗
21. 10.1039/B917861A10.1039/B917861A ↗
22. 10.1021/la901082810.1021/la9010828 ↗
23. 10.1021/la902679c10.1021/la902679c ↗
24. 10.1021/acsami.6b1123910.1021/acsami.6b11239 ↗
25. 10.1021/la702437c10.1021/la702437c ↗
26. 10.1016/j.colsurfa.2017.07.01910.1016/j.colsurfa.2017.07.019 ↗
27. 10.1038/nmat196210.1038/nmat1962 ↗
28. 10.1073/pnas.130440311010.1073/pnas.1304403110 ↗
29. 10.1038/432036a10.1038/432036a ↗
30. 10.1073/pnas.150687411210.1073/pnas.1506874112 ↗
31. 10.1038/natrevmats.2017.3610.1038/natrevmats.2017.36 ↗
32. 10.1242/jeb.05609310.1242/jeb.056093 ↗
33. 10.1242/jeb.17756810.1242/jeb.177568 ↗
34. 10.1242/jeb.07027610.1242/jeb.070276 ↗
35. 10.1126/sciadv.160328810.1126/sciadv.1603288 ↗
36. 10.1103/PhysRevLett.117.10450210.1103/PhysRevLett.117.104502 ↗
37. 10.1126/sciadv.170155810.1126/sciadv.1701558 ↗
38. 10.1146/annurev-fluid-011212-14075310.1146/annurev-fluid-011212-140753 ↗
39. 10.1017/S002211200800438210.1017/S0022112008004382 ↗
40. 10.1017/jfm.2017.33710.1017/jfm.2017.337 ↗
41. Daugherty, R. L.; Ingersoll, A. C. Fluid Mechanics; McGraw-Hill, 1954; p 1233.
42. 10.1021/la903771p10.1021/la903771p ↗
43. 10.1039/C7SM01904A10.1039/C7SM01904A ↗
44. 10.1038/nphys54510.1038/nphys545 ↗
45. 10.1103/PhysRevLett.93.09450210.1103/PhysRevLett.93.094502 ↗
46. 10.1017/jfm.2018.98510.1017/jfm.2018.985 ↗
47. 10.1038/srep0537610.1038/srep05376 ↗
48. 10.1021/la402306c10.1021/la402306c ↗
49. 10.1017/S002211206800212010.1017/S0022112068002120 ↗
50. 10.1017/S002211207200087410.1017/S0022112072000874 ↗
51. 10.1146/annurev.fluid.39.050905.11014910.1146/annurev.fluid.39.050905.110149 ↗