The description of a multicomponent mixture by the density functional method when there are surface phases present

The description of multicomponent mixtures, with an expression for the free energy or the entropy in the form of a density functional [1, 2], is exten ded to the case when the system contains surface phases, when the finite nu mber of particles of the mixture can be linked with certain geometrical sur faces. Equations are obtained which define the static state and hydrodynami c flows for a mixture with an arbitrary number of volume and surface phases . (C) 2001 Elsevier Science Ltd. All rights reserved.