Free-volume viscosity model for fluids in the dense and gaseous states

Ahmed Allal (1, 2) , C. Boned (3) , Antoine Baylaucq

1 PCP - Physico-chimie des polymères
2 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux
3 LFCR - Laboratoire des Fluides Complexes et leurs Réservoirs

An approach to model the viscosity of Newtonian fluids is presented. The approach is based on the free-volume concept and on the diffusion models of the molecules. It takes very correctly into account the transition between gas and liquid. The approach emphasizes the relation between microstructure, dynamic viscosity, and free volume in the understanding of such a complex property as dynamic viscosity.

Domaines: Matière Condensée [cond-mat]

Ahmed Allal, C. Boned, Antoine Baylaucq. Free-volume viscosity model for fluids in the dense and gaseous states. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2001, 64 (1 I), pp.011203/1-011203/10. ⟨hal-01584337⟩