The Boyle Curve of Two-Dimensional Fluid System in the Unharmonic Vibration

Abstract

By considering the existence of the vacancy and the unharmonic vibration of the atoms, the thermodynamic functions of the two-dimensional system are calculated in terms of the Collins model and the Ar is taken as an example. The critical point, Boyle temperature and Boyle curve when the translational and vibrational motions are taken account of are discussed. The results are close to the experimental data and the values calculated by empirical formulae.