Coefficient of restitution for wet particles
The influence of a wetting liquid 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 the wetting liquid is presented and disc...
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| creator | Gollwitzer, Frank Rehberg, Ingo Kruelle, Christof A Huang, Kai |
| description | The influence of a wetting liquid 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 the wetting 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 the 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. |
| doi_str_mv | 10.48550/arxiv.1202.1750 |
| format | Article |
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The dependence of the COR on the impact velocity and various properties of the particle and the wetting 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 the 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.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1202.1750</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Dependence ; Dimensionless numbers ; Film thickness ; Fluid flow ; Impact velocity ; Lubrication ; Physics - Fluid Dynamics ; Physics - Soft Condensed Matter ; Reynolds number ; Wetting</subject><ispartof>arXiv.org, 2012-05</ispartof><rights>2012. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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| subjects | Dependence Dimensionless numbers Film thickness Fluid flow Impact velocity Lubrication Physics - Fluid Dynamics Physics - Soft Condensed Matter Reynolds number Wetting |
| title | Coefficient of restitution for wet particles |
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