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Dynamics of particle-particle collisions in a viscous liquid

Yang, F.-L. and Hunt, M. L. (2006) Dynamics of particle-particle collisions in a viscous liquid. Physics of Fluids, 18 (12). Art. No. 121506. ISSN 1070-6631. http://resolver.caltech.edu/CaltechAUTHORS:YANpof06

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Abstract

When two solid spheres collide in a liquid, the dynamic collision process is slowed by viscous dissipation and the increased pressure in the interparticle gap as compared with dry collisions. This paper investigates liquid-immersed head-on and oblique collisions, which complements previously investigated particle-on-wall immersed collisions. By defining the normal from the line of centers at contact, the experimental findings support the decomposition of an oblique collision into its normal and tangential components of motion. The normal relative particle motion is characterized by an effective coefficient of restitution and a binary Stokes number with a correlation that follows the particle-wall results. The tangential motion is described by a collision model using a normal coefficient of restitution and a friction coefficient that are modified for the liquid effects.


Item Type:Article
Additional Information:©2006 American Institute of Physics (Received 15 May 2006; accepted 13 September 2006; published online 8 December 2006) This work was supported by National Science Foundation Grant No. CTS-0314005. We are grateful to G.G. Joseph for sharing his data, and we acknowledge H.-Y. Chiu for the SEM measurements of our steel beads (SII).
Subject Keywords:collision processes; friction; two-phase flow
Record Number:CaltechAUTHORS:YANpof06
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:YANpof06
Alternative URL:http://dx.doi.org/10.1063/1.2396925
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6689
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:18 Dec 2006
Last Modified:26 Dec 2012 09:24

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