Transport coefficients of hard-sphere mixtures. II. Diameter ratio 0. 4 and mass ratio 0. 03 at low density

Journal Article · Sat Feb 15 00:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.2298· OSTI ID:7276682

Erpenbeck, J J ^[1]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

The transport coefficients of shear viscosity, thermal conductivity, thermal diffusion, and mutual diffusion are estimated for a binary, equimolar mixture of hard spheres having a diameter ratio of 0.4 and a mass ratio of 0.03 at volumes of 5{ital V}{sub 0}, 10{ital V}{sub 0}, and 20{ital V}{sub 0} (where {ital V}{sub 0}=1/2 {radical}2 {ital N} {ital tsum}{sub {ital a}} x{sub {ital a}}{sigma}{sub {ital a}}{sup 3}, {ital x}{sub {ital a}} are mole fractions, {sigma}{sub {ital a}} are diameters, and {ital N} is the number of particles) through Monte Carlo, molecular-dynamics calculations using the Green-Kubo formulas. Calculations are reported for as few as 108 and as many as 4000 particles, but not for each value of the volume. Both finite-system and long-time-tail corrections are applied to obtain estimates of the transport coefficients in the thermodynamic limit; corrections of both types are found to be small. The results are compared with the predictions of the revised Enskog theory and the linear density corrections to that theory are reported. The mean free time is also computed as a function of density and the linear and quadratic corrections to the Boltzmann theory are estimated. The mean free time is also compared with the expression from the Mansoori-Carnahan-Starling-Leland equation of state.

• OSTI ID: 7276682
• Journal Information: Physical Review A. General Physics; (United States), Vol. 45:4; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
FLUIDS
TRANSPORT THEORY
BINARY MIXTURES
CHAPMAN-ENSKOG THEORY
DYNAMICS
HARD-SPHERE MODEL
KUBO FORMULA
MASS
MOLECULES
MONTE CARLO METHOD
SHEAR PROPERTIES
THERMAL CONDUCTIVITY
THERMAL DIFFUSION
DIFFUSION
DISPERSIONS
MECHANICAL PROPERTIES
MECHANICS
MIXTURES
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
665000* - Physics of Condensed Matter- (1992-)