Wave drag on floating bodies

被引：23

作者：

Le Merrer, Marie ^{[1
,2
]}

Clanet, Christophe ^{[1
,2
]}

Quere, David ^{[1
,2
]}

Raphael, Elie ^{[3
]}

Chevy, Frederic ^{[4
]}

机构：

[1] Ecole Polytech, CNRS, Unite Mixte Rech 7646, F-91120 Palaiseau, France

[2] Ecole Super Phys & Chim Ind Ville Paris, Unite Mixte Rech 7636, Ctr Natl Rech Sci Paris 6 Paris 7, F-75005 Paris, France

[3] Ecole Super Phys & Chim Ind Ville Paris, CNRS, Unite Mixte Rech 7083, Lab Phys Chim Theor, F-75005 Paris, France

[4] Univ Paris 06, CNRS, Ecole Normale Super, Lab Kastler Brossel, F-75005 Paris, France

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2011年 / 108卷 / 37期

关键词：

capillary waves; Leidenfrost effect; CAPILLARY-GRAVITY-WAVES; FLUID; WATER;

D O I：

10.1073/pnas.1106662108

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We measure the deceleration of liquid nitrogen drops floating at the surface of a liquid bath. On water, the friction force is found to be about 10 to 100 times larger than on a solid substrate, which is shown to arise from wave resistance. We investigate the influence of the bath viscosity and show that the dissipation decreases as the viscosity is increased, owing to wave damping. The measured resistance is well predicted by a model imposing a vertical force (i.e., the drop weight) on a finite area, as long as the wake can be considered stationary.

引用

页码：15064 / 15068

页数：5

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