Document Type : Research note

Abstract

Lennard-Jones-Devonshire equation of state is an old but theoretical based EOS. The concept of the nearest neighboring molecules or coordination number is proposed to be a function of temperature and volume, whereas it is a constant in the original. The dilute gas and hard sphere limits of molecules are employed to determine this function. Improvement of this modification is demonstrated by property calculations for Lennard-Jones fluid. Results of the modified LJD equation of state offer senior accord with simulation data of Lennard-Jones fluid than those of the original version.    

Keywords

• Lennard-Jones Fluid
• Lennard-Jones Devonshire theory
• Equation of state
• Hard spheres
• Nearest neighboring molecules

Main Subjects

• Thermodynamics,