Renormalization-group corrections to an approximate free-energy model for simple fluids near to and far from the critical region

Journal Article · Wed Apr 01 04:00:00 EST 1998 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.475942· OSTI ID:597192

Lue, L; Prausnitz, J M ^[1]

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1. Department of Chemical Engineering, University of California, Berkeley, California (United States)

We combine liquid-state theory with a renormalization-group method to develop an equation of state for simple fluids that is valid near and far from the critical point. The resulting equation of state has nonclassical critical exponents close to those experimentally observed. Far away from the critical point, the equation of state reduces to that obtained by liquid-state theory. This formalism is applied successfully to square-well fluids, and to three real fluids: methane, carbon dioxide, and n-butane. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 597192
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 13 Vol. 108; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
BUTANE
CARBON DIOXIDE
CHEMICAL ENGINEERING
CRITICAL TEMPERATURE
EQUATIONS OF STATE
FLUIDS
FREE ENERGY
METHANE
RENORMALIZATION
THERMODYNAMIC PROPERTIES