Translational and rotational friction in a rough sphere fluid

Translational and rotational friction in a rough sphere fluid

Publication Type:

Journal Article

Authors:

Lebenhaft, J.R.; Kapral, R.

Source:

The Journal of Chemical Physics, Volume 74, Number 12, p.6888-6895 (1981)

URL:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-0347865351&doi=10.1063%2f1.441099&partnerID=40&md5=f517c6e1540bb4b067a224561259eecd

Abstract:

A microscopic derivation of the translational and rotational friction coefficients for a Browian particle in a dilute rough sphere fluid is presented. A projection operator method is used to couple the test particle's motion to the collective fluid fields, and the resulting generalized Langevin equations are averaged over fluctuations to yield source hydrodynamic equations. After averaging over the surface and volume of the spherical Brownian particle, these equations are algebraically manipulated to give expressions for the force and torque exerted on the tagged particle by the surrounding fluid. The Stokes' law relations, for partial stick boundary conditions, are obtained. © 1981 American Institute of Physics.