Volume 55, Number 2, July 2001
|178 - 183
|Interdisciplinary physics and related areas of science and technology
|01 December 2003
On the phase separation of a binary fluid in a porous medium
Institut für Theoretische Physik and Center for Computational
TU Wien - Wiedner Hauptstraße 8-10, A-1040 Wien, Austria
2 Laboratoire de Physique Théorique, UMR 8627, Bât. 210, Université de Paris-Sud F-91405 Orsay Cedex, France
Accepted: 10 May 2001
Our investigations of the phase diagram of a symmetric binary fluid in equilibrium with a porous matrix show that moderate changes in the properties of the matrix or in the matrix-fluid interaction lead to drastic modifications of the phase diagram of the fluid. Thus our results confirm on a qualitative basis recent experimental data. The phase diagrams that we have obtained show a wide variation and can be classified in terms of archetypes of systems of two order parameters. These different types can be characterised in terms of the loci where the λ-line of the demixing transition intersects the first-order liquid-vapour coexistence curve. Results are based on the optimised random phase approximation and on grand-canonical Monte Carlo simulations.
PACS: 05.70.Fh – Phase transitions: general studies / 64.70.Fx – Liquid-vapor transitions / 64.70.Ja – Liquid-liquid transitions
© EDP Sciences, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.