Non-equilibrium molecular dynamics calculations on the shear viscosity of hard spheres

Jerome J. Erpenbeck

Physica A: Statistical Mechanics and its Applications, 1983, vol. 118, issue 1, 144-156

Abstract: The coefficient of shear viscosity is computed by two non-equilibrium molecular dynamics methods related to those of Lees and Edwards, Evans, and Ashurst and Hoover for hard sphere systems at a fluid density near the solid transition density. One of the methods is isothermal in that it arbitrarily rescales the peculiar velocities. The other permits the system to heat with time. The resulting viscosities are found to agree within the statistical uncertainties for all values of the shear rate studied. Moreover, the non-equilibrium results would appear to be consistent with the zero-shear-rate Green-Kubo results. However, the calculated viscosity shows no evidence for a square-root dependence on shear rate, within the rather large statistical uncertainties, particularly at small shear rate. Moreover, if we deduce a square-root dependence from the previously observed long-time tail of the shear viscosity through the Zwanzig relation, then these viscositees appear to disagree significantly.

Date: 1983
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/0378437183901838
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:118:y:1983:i:1:p:144-156

DOI: 10.1016/0378-4371(83)90183-8

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().