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Effect of the attractive forces on the density change melting of 2D LJ fluids

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  • Cuadros, F.
  • Mulero, A.
  • Okrasinski, W.

Abstract

The Weeks-Chandler-Andersen perturbation theory of fluids can be considered as a modern version of van der Waals'. Whereas in the old van der Waals theory the effect of the attractive forces on the thermodynamic properties is introduced through a constant, a, in Weeks-Chandler-Andersen theory this constant is replaced by a function of temperature and density α(β, ϱ). This function has been determined by means of Molecular Dynamics simulation of a two-dimensional Lennard-Jones fluid, and here is used to analyse the effect of attractive forces on the density change in melting. The influence is found to be slightly greater than the predictions of van der Waals theory.

Suggested Citation

  • Cuadros, F. & Mulero, A. & Okrasinski, W., 1995. "Effect of the attractive forces on the density change melting of 2D LJ fluids," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 214(2), pages 162-168.
    • Handle: RePEc:eee:phsmap:v:214:y:1995:i:2:p:162-168
    DOI: 10.1016/0378-4371(94)00261-Q
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    1. Cuadros, F. & Mulero, A. & Okrasinski, W., 1996. "Effect of the attractive forces in determining the critical point of a two-dimensional Lennard-Jones system," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 223(3), pages 321-328.

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