title: Ternary free-energy lattice Boltzmann model with tunable surface tensions and contact angles.
abstract: We present a ternary free-energy lattice Boltzmann model. The distinguishing feature of our model is that we are able to analytically derive and independently vary all fluid-fluid surface tensions and the solid surface contact angles. We carry out a number of benchmark tests: (i) double emulsions and liquid lenses to validate the surface tensions, (ii) ternary fluids in contact with a square well to compare the contact angles against analytical predictions, and (iii) ternary phase separation to verify that the multicomponent fluid dynamics is accurately captured. Additionally we also describe how the model presented here can be extended to include an arbitrary number of fluid components.
authors.affiliation: Department of Physics, Durham University, Durham DH1 3LE, United Kingdom.
authors.forename: Ciro
authors.initials: C
authors.lastname: Semprebon
authors.affiliation: School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL, United Kingdom.
authors.forename: Timm
authors.initials: T
authors.lastname: Krüger
authors.affiliation: Department of Physics, Durham University, Durham DH1 3LE, United Kingdom.
authors.forename: Halim
authors.initials: H
authors.lastname: Kusumaatmaja