Giant drag reduction on Leidenfrost spheres evaluated from extended free-fall trajectories
Experimental Thermal and Fluid Science(2019)
摘要
•Novel data on Leidenfrost drag reduction collected using large liquid tanks.•The entire sphere fall trajectory is analyzed.•The drags reduction is extending to the supercritical range.•Demonstrated is the lowest drag coefficient measured on falling sphere.
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关键词
Drag reduction,Vapor layer,Leidenfrost effect,Drag crisis
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