Decomposition driven interface evolution for layers of binary mixtures: I. Model dirivation and base states

Thiele, Uwe and Madruga Sánchez, Santiago and Frastia, Lubor (2007). Decomposition driven interface evolution for layers of binary mixtures: I. Model dirivation and base states. "PHYSICS OF FLUIDS", v. 19 ; pp.. ISSN 1070-6631. https://doi.org/10.1063/1.2824404.

Description

Title: Decomposition driven interface evolution for layers of binary mixtures: I. Model dirivation and base states
Author/s:
  • Thiele, Uwe
  • Madruga Sánchez, Santiago
  • Frastia, Lubor
Item Type: Article
Título de Revista/Publicación: PHYSICS OF FLUIDS
Date: December 2007
ISSN: 1070-6631
Volume: 19
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A dynamical model is proposed to describe the coupled decomposition and profile evolution of a free surfacefilm of a binary mixture. An example is a thin film of a polymer blend on a solid substrate undergoing simultaneous phase separation and dewetting. The model is based on model-H describing the coupled transport of the mass of one component (convective Cahn-Hilliard equation) and momentum (Navier-Stokes-Korteweg equations) supplemented by appropriate boundary conditions at the solid substrate and the free surface. General transport equations are derived using phenomenological nonequilibrium thermodynamics for a general nonisothermal setting taking into account Soret and Dufour effects and interfacial viscosity for the internal diffuse interface between the two components. Focusing on an isothermal setting the resulting model is compared to literature results and its base states corresponding to homogeneous or vertically stratified flat layers are analyzed.

More information

Item ID: 21697
DC Identifier: http://oa.upm.es/21697/
OAI Identifier: oai:oa.upm.es:21697
DOI: 10.1063/1.2824404
Deposited by: Memoria Investigacion
Deposited on: 20 Mar 2014 14:05
Last Modified: 21 Apr 2016 12:25
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