Journal
EUROPEAN PHYSICAL JOURNAL B
Volume 83, Issue 3, Pages 375-380Publisher
SPRINGER
DOI: 10.1140/epjb/e2011-20395-3
Keywords
-
Categories
Funding
- Deutsche Forschungsgemeinschaft (DFG) [FOR 877]
- Alexander Von Humboldt Foundation
Ask authors/readers for more resources
In this article, we present molecular dynamics study of the velocity autocorrelation function (VACF) of a Brownian particle. We compare the results of the simulation with the exact analytic predictions for a compressible fluid from [T. S. Chow, J.J. Hermans, Physica 65, 156 (1973)] and an approximate result combining the predictions from hydrodynamics at short and long times. The physical quantities which determine the decay were determined from separate bulk simulations of the Lennard-Jones fluid at the same thermodynamic state point. We observe that the long-time regime of the VACF compares well the predictions from the macroscopic hydrodynamics, but the intermediate decay is sensitive to the viscoelastic nature of the solvent.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available