We report on molecular dynamics simulations of shear viscosity eta of a dense two-dimensional fluid as a function of the shear rate gamma. We find an analytic dependence of eta on gamma, and do not find any evidence whatsoever of divergence in the Green-Kubo (GK) value that would be caused by the well-known longtime tail for the shear-stress autocorrelation function, as predicted by the mode-coupling theory. In accordance with the linear response theory, the GK value of eta agrees remarkably well with nonequilibrium values at small shear rates.

Linear and nonlinear viscous flow in two-dimensional fluids / D., Gravina; Ciccotti, Giovanni; B. L., Holian. - In: PHYSICAL REVIEW E. - ISSN 1063-651X. - 52:6(1995), pp. 6123-6128. [10.1103/physreve.52.6123]

Linear and nonlinear viscous flow in two-dimensional fluids

CICCOTTI, Giovanni;
1995

Abstract

We report on molecular dynamics simulations of shear viscosity eta of a dense two-dimensional fluid as a function of the shear rate gamma. We find an analytic dependence of eta on gamma, and do not find any evidence whatsoever of divergence in the Green-Kubo (GK) value that would be caused by the well-known longtime tail for the shear-stress autocorrelation function, as predicted by the mode-coupling theory. In accordance with the linear response theory, the GK value of eta agrees remarkably well with nonequilibrium values at small shear rates.
1995
01 Pubblicazione su rivista::01a Articolo in rivista
Linear and nonlinear viscous flow in two-dimensional fluids / D., Gravina; Ciccotti, Giovanni; B. L., Holian. - In: PHYSICAL REVIEW E. - ISSN 1063-651X. - 52:6(1995), pp. 6123-6128. [10.1103/physreve.52.6123]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/33567
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