Multiscale simulations of sliding droplets

J. J. Derksen (Corresponding Author), A. E. Komrakova

Research output: Contribution to journalArticle

1 Citation (Scopus)
4 Downloads (Pure)

Abstract

We study – through numerical simulations – a droplet sliding over a solid substrate as a result of a simple shear flow. We use a free-energy lattice-Boltzmann (LB) scheme and compare its results with those of molecular dynamics (MD) simulations. According to the MD, at sufficiently low Reynolds and capillary numbers, the dimensionless sliding speed is a unique function of the equilibrium contact angle. Reproducing the MD results with LB simulations requires the use of a non-equilibrium boundary condition at the substrate and tuning a free parameter in the boundary condition.
Original languageEnglish
Pages (from-to)657-666
Number of pages10
JournalActa Mechanica
Volume230
Issue number2
Early online date30 Oct 2018
DOIs
Publication statusPublished - Feb 2019

Fingerprint

Molecular dynamics
Boundary conditions
Computer simulation
Substrates
Shear flow
Free energy
Contact angle
Tuning

Keywords

  • wetting
  • immiscible liquids
  • interfacial tension
  • moving contact lines
  • molecular dynamics
  • free-energy lattice-Boltzmann method

Cite this

Multiscale simulations of sliding droplets. / Derksen, J. J. (Corresponding Author); Komrakova, A. E.

In: Acta Mechanica, Vol. 230, No. 2, 02.2019, p. 657-666.

Research output: Contribution to journalArticle

Derksen, J. J. ; Komrakova, A. E. / Multiscale simulations of sliding droplets. In: Acta Mechanica. 2019 ; Vol. 230, No. 2. pp. 657-666.
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