Acta Phys. -Chim. Sin. ›› 1994, Vol. 10 ›› Issue (06): 495-500.doi: 10.3866/PKU.WHXB19940604

• ARTICLE • Previous Articles     Next Articles

The Applications of Free Volume Models to the Evaluation of Transport Properties of Square Well Fluids

Liu Hong-Qin   

  1. Department of Chemical Engneering, Beijing Institute of Chemical Technology, Beijing 100029
  • Received:1992-11-10 Revised:1993-03-26 Published:1994-06-15
  • Contact: Liu Hong-Qin


This paper proposes a method of testing the free volume models for fluid transport properties by the MD simulation data for square well fluids. Several commouly used free volume models for viscosity and thermal conductivity are evaluated by the method,and the results show that the model proposed by this author is superior to others. Two important conclusions have been derived: a unified model can be applied to both viscosity and thermal conductivity, and the transport properties of liquld and gas (vapor) phases can be correlated simultaniously by the model with unified parameters. The conclusions approached here are of significance to the systems of practical interests.

Key words: Square well fluids, Viscosity, Thermal conductivity, Free volume model