Computation of the viscosity of a liquid from time averages of stress fluctuations

Siegfried Hess; Denis J. Evans

doi:10.1103/PhysRevE.64.011207

Computation of the viscosity of a liquid from time averages of stress fluctuations

Siegfried Hess, Denis J. Evans

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

The shear viscosity of a fluid was inferred from ensemble averages of the mean square of time averages of the stress fluctuations. For a particular state point of a Lennard-Jones type model fluid, the kinetic and potential contributions, as well as the total shear viscosity were calculated. Within statistical uncertainties, the numerical values agree with the corresponding results obtained in the small shear rate limit of nonequilibrium molecular dynamics (NEMD) simulations.

Original language	English
Article number	011207
Pages (from-to)	1-6
Number of pages	6
Journal	Physical Review E
Volume	64
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevE.64.011207
Publication status	Published - Jul 2001

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10.1103/PhysRevE.64.011207

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abstract = "The shear viscosity of a fluid was inferred from ensemble averages of the mean square of time averages of the stress fluctuations. For a particular state point of a Lennard-Jones type model fluid, the kinetic and potential contributions, as well as the total shear viscosity were calculated. Within statistical uncertainties, the numerical values agree with the corresponding results obtained in the small shear rate limit of nonequilibrium molecular dynamics (NEMD) simulations.",

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Computation of the viscosity of a liquid from time averages of stress fluctuations

Abstract

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