Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces
Abstract The formation of a stable gas cavity on the surfaces of solid bodies is essential for many practical applications, such as drag reduction and energy savings, owing to the transformation of the originally sticky solid–liquid interface into a free‐slip liquid–vapor interface by the creation o...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-03-01
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| Series: | Advanced Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/advs.202103568 |
| _version_ | 1818909750219243520 |
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| author | Suwan Zhu Tao Wu Yucheng Bian Chao Chen Yiyuan Zhang Jiawen Li Dong Wu Yanlei Hu Jiaru Chu Erqiang Li Zuankai Wang |
| author_facet | Suwan Zhu Tao Wu Yucheng Bian Chao Chen Yiyuan Zhang Jiawen Li Dong Wu Yanlei Hu Jiaru Chu Erqiang Li Zuankai Wang |
| author_sort | Suwan Zhu |
| collection | DOAJ |
| description | Abstract The formation of a stable gas cavity on the surfaces of solid bodies is essential for many practical applications, such as drag reduction and energy savings, owing to the transformation of the originally sticky solid–liquid interface into a free‐slip liquid–vapor interface by the creation of either liquid repellency or a Leidenfrost state on the surfaces. Here, it is shown that the simple infusion of a textured sphere with a smooth, slippery liquid layer can more easily create and sustain a stable gas cavity in a liquid at lower impact velocities compared to a dry solid sphere with the same contact angle. With a key parameter of curvature ratio, the early lamella dynamics during water entry of spheres and drops impact on planes are first unified. With the perspective of wetting transition, the unforeseen phenomenon of prone to cavity formation are successfully explained, which is the preferential lamella detachment from a slippery surface due to the higher viscosity of the lubricant relative to air. It is envisioned that the findings will provide an important and fundamental contribution to the quest for energy‐efficient transport. |
| first_indexed | 2024-12-19T22:31:52Z |
| format | Article |
| id | doaj.art-44b9d6a0e0334020acbc61b47c1687cc |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-19T22:31:52Z |
| publishDate | 2022-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-44b9d6a0e0334020acbc61b47c1687cc2022-12-21T20:03:19ZengWileyAdvanced Science2198-38442022-03-0197n/an/a10.1002/advs.202103568Sustaining Robust Cavities with Slippery Liquid–Liquid InterfacesSuwan Zhu0Tao Wu1Yucheng Bian2Chao Chen3Yiyuan Zhang4Jiawen Li5Dong Wu6Yanlei Hu7Jiaru Chu8Erqiang Li9Zuankai Wang10CAS Key Laboratory of Mechanical Behavior and Design of Materials Hefei National Laboratory for Physical Sciences at the Microscale Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 ChinaDepartment of Modern Mechanics University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Hefei National Laboratory for Physical Sciences at the Microscale Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Hefei National Laboratory for Physical Sciences at the Microscale Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Hefei National Laboratory for Physical Sciences at the Microscale Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Hefei National Laboratory for Physical Sciences at the Microscale Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Hefei National Laboratory for Physical Sciences at the Microscale Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Hefei National Laboratory for Physical Sciences at the Microscale Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 ChinaCAS Key Laboratory of Mechanical Behavior and Design of Materials Hefei National Laboratory for Physical Sciences at the Microscale Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei 230026 ChinaDepartment of Modern Mechanics University of Science and Technology of China Hefei 230026 ChinaDepartment of Mechanical and Biomedical Engineering City University of Hong Kong Hong Kong 999077 ChinaAbstract The formation of a stable gas cavity on the surfaces of solid bodies is essential for many practical applications, such as drag reduction and energy savings, owing to the transformation of the originally sticky solid–liquid interface into a free‐slip liquid–vapor interface by the creation of either liquid repellency or a Leidenfrost state on the surfaces. Here, it is shown that the simple infusion of a textured sphere with a smooth, slippery liquid layer can more easily create and sustain a stable gas cavity in a liquid at lower impact velocities compared to a dry solid sphere with the same contact angle. With a key parameter of curvature ratio, the early lamella dynamics during water entry of spheres and drops impact on planes are first unified. With the perspective of wetting transition, the unforeseen phenomenon of prone to cavity formation are successfully explained, which is the preferential lamella detachment from a slippery surface due to the higher viscosity of the lubricant relative to air. It is envisioned that the findings will provide an important and fundamental contribution to the quest for energy‐efficient transport.https://doi.org/10.1002/advs.202103568cavity formationdrag reductiondroplet impactslippery surfaceswater entry |
| spellingShingle | Suwan Zhu Tao Wu Yucheng Bian Chao Chen Yiyuan Zhang Jiawen Li Dong Wu Yanlei Hu Jiaru Chu Erqiang Li Zuankai Wang Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces Advanced Science cavity formation drag reduction droplet impact slippery surfaces water entry |
| title | Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces |
| title_full | Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces |
| title_fullStr | Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces |
| title_full_unstemmed | Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces |
| title_short | Sustaining Robust Cavities with Slippery Liquid–Liquid Interfaces |
| title_sort | sustaining robust cavities with slippery liquid liquid interfaces |
| topic | cavity formation drag reduction droplet impact slippery surfaces water entry |
| url | https://doi.org/10.1002/advs.202103568 |
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