Time-correlation functions and transport coefficients of two-dimensional Yukawa liquids

Z. Donkó, J. Goree, P. Hartmann, Bin Liu

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

The existence of coefficients for diffusion, viscosity, and thermal conductivity is examined for two-dimensional (2D) liquids. Equilibrium molecular dynamics simulations are performed using a Yukawa potential and the long-time behavior of autocorrelation functions is tested. Advances reported here as compared to previous 2D Yukawa liquid simulations include an assessment of the thermal conductivity, using a larger system size to allow meaningful examination of longer times, and development of improved analysis methods. We find that the transport coefficient exists for diffusion at high temperature and viscosity at low temperature, but not in the opposite limits. The thermal conductivity coefficient does not appear to exist at high temperature. Further advances in computing power could improve these assessments by allowing even larger system sizes and longer time series.

Original languageEnglish
Article number026401
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume79
Issue number2
DOIs
Publication statusPublished - Feb 2 2009

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Time Correlation Functions
Transport Coefficients
Thermal Conductivity
thermal conductivity
transport properties
Liquid
Viscosity
coefficients
liquids
viscosity
Yukawa potential
conductivity
Long-time Behavior
Coefficient
Autocorrelation Function
Molecular Dynamics Simulation
autocorrelation
Time series
simulation
examination

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

Cite this

Time-correlation functions and transport coefficients of two-dimensional Yukawa liquids. / Donkó, Z.; Goree, J.; Hartmann, P.; Liu, Bin.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 79, No. 2, 026401, 02.02.2009.

Research output: Contribution to journalArticle

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