The strain rate dependence of shear viscosity, pressure and energy from two-body and three-body interactions

Citation
G. Marcelli et al., The strain rate dependence of shear viscosity, pressure and energy from two-body and three-body interactions, FLU PH EQUI, 183, 2001, pp. 371-379
Citations number
25
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
FLUID PHASE EQUILIBRIA
ISSN journal
03783812 → ACNP
Volume
183
Year of publication
2001
Pages
371 - 379
Database
ISI
SICI code
0378-3812(20010701)183:<371:TSRDOS>2.0.ZU;2-A
Abstract
Non-equilibrium molecular dynamics simulations (NEMD) are reported for the shear viscosity of xenon using accurate two- and three-body potentials, The hydrostatic pressure and energy are observed to vary proportionally with t he square of the strain rate. This is in contrast to the non-analytic three -halves power dependence on strain rate predicted by mode-coupling theory. This result is attributed solely to the two-body potential. The main effect of the three-body potential is to alter the magnitude of the pressure, ene rgy and viscosity profiles. (C) 2001 Elsevier Science B.V. All rights reser ved.