Volume 45, Number 3, February 1999
|Page(s)||314 - 320|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||01 September 2002|
A lattice Boltzmann model of ternary fluid mixtures
Istituto Nazionale per la Fisica della Materia
Dipartimento di Fisica, Università di Bari
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
via Amendola 173, 70126 Bari, Italy
2 Department of Physics, Theoretical Physics- 1 Keble Rd., Oxford OX1 3NP, UK
Accepted: 25 November 1998
A lattice Boltzmann model is introduced which simulates oil-water-surfactant mixtures. The model is based on a Ginzburg-Landau free energy with two scalar order para meters. Diffusive and hydrodynamic transport is included. Results are presented showing how the surfactant diffuses to the oil-water interfaces thus lowering the surface tension and leading to spontaneous emulsification. The rate of emulsification depends on the viscosity of the ternary fluid.
PACS: 47.20.Ma – Interfacial instability / 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 83.10.Lk – Multiphase flows
© EDP Sciences, 1999
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