Lattice-Boltzmann simulations of droplet evaporation

Rodrigo Ledesma-Aguilar, Dominic Vella, Julia M. Yeomans

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

© the Partner Organisations 2014. We study the utility and validity of lattice-Boltzmann (LB) simulations to explore droplet evaporation driven by a concentration gradient. Using a binary-fluid lattice-Boltzmann algorithm based on Cahn-Hilliard dynamics, we study the evaporation of planar films and 3D sessile droplets from smooth solid surfaces. Our results show that LB simulations accurately reproduce the classical regime of quasi-static dynamics. Beyond this limit, we show that the algorithm can be used to explore regimes where the evaporative and diffusive timescales are not widely separated, and to include the effect of boundaries of prescribed driving concentration. We illustrate the method by considering the evaporation of a droplet from a solid surface that is chemically patterned with hydrophilic and hydrophobic stripes. This journal is
Original languageEnglish (US)
Pages (from-to)8267-8275
Number of pages9
JournalSoft Matter
Volume10
Issue number41
DOIs
StatePublished - 2014
Externally publishedYes

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