Hydrodynamics and Brownian motions of a spheroid near a rigid wall
File(s)
Author(s)
De Corato, M
Greco, F
D'Avino, G
Maffettone, PL
Type
Journal Article
Abstract
In this work, we study in detail the hydrodynamics and the Brownian motions of a spheroidal particle suspended in a Newtonian fluid near a flat rigid wall. We employ 3D Finite Element Method (FEM) simulations to compute how the mobility tensor of the spheroid varies with both the particle-wall separation distance and the particle orientation. We then study the Brownian motion of the spheroid by means of a discretized Langevin equation. We specifically focus on the additional drift terms arising from the position and orientational dependence of the mobility matrix. In this respect, we also propose a numerically convenient approximation of the orientational divergence of the mobility matrix that is required in the solution of the Langevin equation. Our results illustrate that both hydrodynamics and Brownian motions of a spheroidal particle near a confining wall display novel features from those of a sphere in the same type of confinement.
Date Issued
2015-05-15
Date Acceptance
2015-04-30
Citation
Journal of Chemical Physics, 2015, 142
ISSN
1089-7690
Publisher
American Institute of Physics (AIP)
Journal / Book Title
Journal of Chemical Physics
Volume
142
Copyright Statement
© 2015 AIP Publishing LLC.
Identifier
http://www.ncbi.nlm.nih.gov/pubmed/26001478
Subjects
Chemical Physics
Physical Sciences
Chemical Sciences
Engineering
Publication Status
Published
Coverage Spatial
United States
Article Number
194901