Transport in simple dense fluids

Conference · Sun Jan 01 04:00:00 EST 1989 · Int. J. Thermophys.; (United States)

OSTI ID:5637309

Karkheck, J; Stell, G; Xu, J

A transport theory for Lennard-Jones (LJ) fluids is described. The underlying mean-field kinetic theory model the LJ potential by adding a hard-sphere core to the attractive tail of the LJ potential. The transport coefficients discussed here-shear viscosity, thermal conductivity, and self-diffusion coefficient-exhibit Enskog-like forms, but now the radial distribution function (rdf) bears explicit dependence on the LJ tail as well as on the hard-sphere core. The hard-sphere diameter is determined according to the well-known WCA method used in equilibrium statistical mechanics to mimic the LJ fluid. Hence the transport theory employs no adjustable parameters. Numerical results are compared to simulation and experimental results for many states, including saturated liquid, triple point, and dense gas. In general, a quantitatively accurate transport theory is obtained for the states considered. This represents improvement, both numerically and conceptually, over an earlier theory.

• Research Organization: GMI Engineering and Management Institute, Flint, MI (USA)
• OSTI ID: 5637309
• Report Number(s): CONF-880606-
• Conference Information: Journal Name: Int. J. Thermophys.; (United States) Journal Volume: 10:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
42 ENGINEERING
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARGON
CHAPMAN-ENSKOG THEORY
COMPUTERIZED SIMULATION
DENSITY
DIFFUSION
DISTRIBUTION FUNCTIONS
ELEMENTS
ENERGY
EQUILIBRIUM
FLUIDS
FUNCTIONS
GASES
HARD-SPHERE MODEL
KINETIC ENERGY
LENNARD-JONES POTENTIAL
LIQUIDS
MATHEMATICAL MODELS
MECHANICS
NONMETALS
PHYSICAL PROPERTIES
POTENTIALS
RARE GASES
SELF-DIFFUSION
SHEAR
SIMULATION
STATISTICAL MECHANICS
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMODYNAMICS
TRANSPORT THEORY
VISCOSITY