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IJC-A Vol.47A(07) [July 2008] >


Title: A comparative study between the effective pair potential parameters obtained from different equations of states
Authors: Kermanpour, F
Farzi, N
Issue Date: Jul-2008
Publisher: CSIR
Abstract: Internal energy of liquid methane has been obtained based on the pair-wise additive approximation for the effective pair potential of dense fluids using (12,6) Lennard-Jones model for the intermolecular potential function. This internal energy has been compared with the internal pressure via the equation of state (EoS) expression. Thus, the effective pair potential parameters (EPPP) through some given EoSs for dense fluids have been calculated. A relation between the potential parameters with EoS parameters has been obtained. Using the obtained EPPPs and applying the pair-wise additive approximation, one could calculate accurately the thermodynamics functions such as total energy. The results of such calculations for the total energy of the liquid methane obtained via the EPPPs from different EoSs indicate a good agreement with the experimental data. Physical interpretation for the state dependencies of the obtained EPPPs from given EoSs is also presented.
Page(s): 979-985
ISSN: 0376-4710
Source:IJC-A Vol.47A(07) [July 2008]

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