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- Title
- Drag reduction by Leidenfrost vapor layers
- Author(s)
- Vakarelski, Ivan U.; Marston, Jeremy O.; Chan, Derek Y. C.; Thoroddsen, Sigurdur T.
- Abstract
- We demonstrate and quantify a highly effective drag reduction technique that exploits the Leidenfrost effect to create a continuous and robust lubricating vapor layer on the surface of a heated solid sphere moving in a liquid. Using high-speed video, we show that such vapor layers can reduce the hydrodynamic drag by over 85%. These results appear to approach the ultimate limit of drag reduction possible by different methods based on gas-layer lubrication and can stimulate the development of related energy saving technologies.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Life and Social Sciences
- Source
- Physical Review Letters, Vol. 106, no. 21 (May 2011), article no. 214501
- Publication year
- 2011
- FOR Code(s)
- 01 Mathematical Sciences; 02 Physical Sciences; 09 Engineering
- Keyword(s)
- Drag reduction; Gas layers; Hydrodynamic drag; Leidenfrost effect; Temperature; Vapor layers
- Publisher
- American Physical Society
- ISSN
- 0031-9007
- Publisher URL
- http://dx.doi.org/10.1103/PhysRevLett.106.214501
- Copyright
- Copyright © 2011 American Physical Society. The published version of the paper is reproduced here in accordance with the copyright policy of the publisher.
- Full text
- Peer reviewed
