Hydrodynamics of Binary Fluid Phase Segregation

Sorin Bastea, Raffaele Esposito, Joel L. Lebowitz, Rossana Marra

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Starting with the Vlasov-Boltzmann equation for a binary fluid mixture, we derive an equation for the velocity field [Formula presented] when the system is segregated into two phases (at low temperatures) with a sharp interface between them. [Formula presented] satisfies the incompressible Navier-Stokes equations together with a jump boundary condition for the pressure across the interface which, in turn, moves with a velocity given by the normal component of [Formula presented]. Numerical simulations of the Vlasov-Boltzmann equations for shear flows parallel and perpendicular to the interface in a phase segregated mixture support this analysis. We expect similar behavior in real fluid mixtures.

Original languageEnglish (US)
JournalPhysical review letters
Volume89
Issue number23
DOIs
StatePublished - Jan 1 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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