Coefficient of restitution for wet particles.

Journal Article (Journal Article)

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.

Full Text

Duke Authors

Cited Authors

  • Gollwitzer, F; Rehberg, I; Kruelle, CA; Huang, K

Published Date

  • July 9, 2012

Published In

Volume / Issue

  • 86 / 1 Pt 1

Start / End Page

  • 011303 -

PubMed ID

  • 23005407

Electronic International Standard Serial Number (EISSN)

  • 1550-2376

International Standard Serial Number (ISSN)

  • 1539-3755

Digital Object Identifier (DOI)

  • 10.1103/physreve.86.011303


  • eng