Analytical solution for thermal convection in a layer of liquid crystal with free surface

M. Yu Zhukov, V. A. Vladimirov

Research output: Contribution to journalArticle

Abstract

An Oberbeck-Bussinesq type model for convection in isothermically incompressible liquid crystals (nematics and cholesterics) is proposed. For its derivation, the nonequilibrium thermodynamics and asymptotic methods are employed. The model is based on the Leslie-Ericksen-Parodi (LEP) continuum theory [1-4] taken with some minor modifications. The problem of the thermal gravity convection in a plane horizontal layer with 'free undeformable' boundary and under the action of external magnetic or electric field is considered. Solution of this problem is obtained and presented in an explicit analytical form. Existence of the explicit analytical solution is very useful, since it allows us to investigate the influence of various parameters (Leslie coefficients, Frank moduli, anisotropic thermo-diffasivity, etc.) at the onset of convection.

Original languageEnglish
JournalMolecular Crystals and Liquid Crystals
Volume413
DOIs
Publication statusPublished - 2004

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Keywords

  • Analytical solution
  • Cholesterics
  • Nematics
  • Thermal convection

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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