TY - JOUR
T1 - Drag Reduction by Leidenfrost Vapor Layers
AU - Vakarelski, Ivan Uriev
AU - Marston, Jeremy
AU - Chan, Derek Y. C.
AU - Thoroddsen, Sigurdur T
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2011/5/23
Y1 - 2011/5/23
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/552126
UR - http://link.aps.org/doi/10.1103/PhysRevLett.106.214501
UR - http://www.scopus.com/inward/record.url?scp=79960619817&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.106.214501
DO - 10.1103/PhysRevLett.106.214501
M3 - Article
C2 - 21699302
SN - 0031-9007
VL - 106
JO - Physical Review Letters
JF - Physical Review Letters
IS - 21
ER -