Theory of condensable gases: Progress report, March 15, 1986-February 28, 1987

Technical Report · Sat Nov 01 04:00:00 EST 1986

OSTI ID:6710088

White, J A

A theory of the contribution of short to intermediate wavelength random fluctuations to thermodynamic properties has been worked through for a model system of interacting molecules. The object has been to obtain a simple but good first approximation to the thermodynamic behavior of real systems both near the critical point and over wide regions of temperature, density, and pressure in the surrounding gas, liquid, and supercritical phases. The simplest version of the model extends a modern variant of the mean field theory of Van der Walls by introducing a single new parameter that characterizes the finite range of the attractive intermolecular interactions. The theory thus contains the following three molecular parameters, including those of Van der Waals: b = volume of repulsive cores, a = energy-volume product for attractive interactions, and the new parameter, c = volume of attractive halos, i.e., the volume of the region of attractive interactions that surrounds the repulsive cores.

• Research Organization: American Univ., Washington, DC
• DOE Contract Number: FG05-86ER13493
• OSTI ID: 6710088
• Report Number(s): DOE/ER/13493-1; ON: DE87007318
• Country of Publication: United States
• Language: English

Related Subjects

640410* -- Fluid Physics-- General Fluid Dynamics
657000 -- Theoretical & Mathematical Physics
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL PRESSURE
CRITICAL TEMPERATURE
FLUIDS
GASES
LIQUIDS
MATHEMATICAL MODELS
PARTICLE MODELS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
STATISTICAL MODELS
TEMPERATURE DEPENDENCE
THERMODYNAMIC MODEL
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE