Integral Equation Study of the Square-Well Fluid for Varying Attraction Range

El Bahloul El Mendoub (1) , Jean-Francois Wax (1) , Isabelle Charpentier (2) , Noel Jakse (3)

1 LPMD - Laboratoire de Physique des Milieux Denses
2 LPMM - Laboratoire de physique et mécanique des matériaux
3 SIMaP - Science et Ingénierie des Matériaux et Procédés

In the present work, the properties of the square-well fluid (SW) for varying attraction range are investigated in the framework of the integral equation method. The pair-correlation functions are calculated for a wide range of the potential attraction including the colloidal regime, and the liquid-vapour phase diagram as well as the critical parameters are determined for attraction ranges spanning from the van der Waals limit down to the metastable region. An overall good agreement is found compared to available simulation data as well as the self-consistent Ornstein-Zernike approximation.

Mots clés: Physical Sciences

Domaines: Matériaux; Génie des procédés

El Bahloul El Mendoub, Jean-Francois Wax, Isabelle Charpentier, Noel Jakse. Integral Equation Study of the Square-Well Fluid for Varying Attraction Range. Molecular Physics, 2009, 106 (24), pp.2667-2675. ⟨10.1080/00268970802603499⟩. ⟨hal-00513237⟩