Accurate contact angle boundary conditions for the Cahn-Hilliard equations

Hyun Geun Lee, Junseok Kim

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The contact angle dynamics between a two-phase interface and a solid surface is important in physical interpretations, mathematical modeling, and numerical treatments. We present a novel formulation based on a characteristic interpolation for the contact angle boundary conditions for the Cahn-Hilliard equation. The new scheme inherits characteristic properties, such as the mass conservation, the total energy decrease, and the unconditionally gradient stability. We demonstrate the accuracy and robustness of the proposed contact angle boundary formulation with various numerical experiments. The numerical results indicate a potential usefulness of the proposed method for accurately calculating contact angle problems.

Original languageEnglish
Pages (from-to)178-186
Number of pages9
JournalComputers and Fluids
Volume44
Issue number1
DOIs
Publication statusPublished - 2011 May 1

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Keywords

  • Cahn-Hilliard equation
  • Contact angle
  • Nonlinear multigrid method
  • Unconditionally gradient stable scheme

ASJC Scopus subject areas

  • Computer Science(all)
  • Engineering(all)

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