Loci of extrema of thermodynamic response functions for the Lennard-Jones fluidReport as inadecuate




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* Corresponding author 1 Departamento de Fisica Aplicada 2 Departamento de Físicoquímica

Abstract : Lines of extrema along isotherms and isobars for the residual isochoric heat capacity, the residual isobaric heat capacity, the isobaric thermal expansivity, and the isothermal compressibility of the Lennard-Jones fluid have been studied from popular equations of state due to Jonhson et al. Mol. Phys. 78, 591 1993, Kolafa and Nezbeda Fluid Phase Equilib. 100, 1 1994, and Mecke et al. Int. J. Thermophys. 17, 391 1996. On depicting such loci in the pressure-temperature plane, the characteristic behavior of thermodynamic response functions in the ideal-gas limit at high enough temperatures or low enough pressures, the close-packed-fluid limit at low enough temperatures or high enough pressures as well as in the liquid and critical regions is identified. The present analysis is informative itself, but it also stimulates further work in order to tackle more complicated cases of study including associated fluids like alcohols and low-temperature water.

Keywords : Physical Sciences





Author: Claudio Cerdeiriña - Pablo Téllez-Arredondo - Milton Medeiros - Manuel Piñeiro -

Source: https://hal.archives-ouvertes.fr/



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