Coefficient of restitution for wet particles

被引：90
|
作者：
Gollwitzer, Frank [1 ]
Rehberg, Ingo [1 ]
Kruelle, Christof A. [2 ]
Huang, Kai [1 ]
机构：
[1] Univ Bayreuth, D-95440 Bayreuth, Germany
[2] Hsch Karlsruhe Tech & Wirtschaft, D-76133 Karlsruhe, Germany
来源：
PHYSICAL REVIEW E | 2012年 / 86卷 / 01期
关键词：
ELASTOHYDRODYNAMIC COLLISION; IMPACT DEFORMATION; SPHERES; STRENGTH; BEHAVIOR; BRIDGES; LAYERS; MODEL;
D O I：
10.1103/PhysRevE.86.011303
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The influence of a liquid film on the coefficient of restitution (COR) is investigated experimentally by tracing freely falling particles bouncing on a wet surface. The dependence of the COR on the impact velocity and various properties of the particle and liquid is presented and discussed in terms of dimensionless numbers that characterize the interplay between inertial, viscous, and surface forces. In the Reynolds number regime where lubrication theory does not apply, the ratio of the film thickness to the particle size is found to be a crucial parameter determining the COR.
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页数：9
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