Fluid Dynamics

, Volume 45, Issue 1, pp 85–95 | Cite as

Modeling of surface phenomena in the presence of surface-active agents on the basis of the density-functional theory

  • O. Yu. Dinariev
  • N. V. Evseev
Article

Abstract

Within the framework of the density-functionalmethod in multiphase multicomponent mixture hydrodynamics, the possibility of modeling surface-active agents on a “fluid-fluid” phase interface is shown. The method is based on the continuum description of multiphase mixtures with introducing terms quadratic in component density gradients to entropy or free energy. The determining equations are derived. Hydrodynamic model problems which demonstrate certain typical phenomena (the accumulation of surface-active agents on the phase interface, the corresponding decrease in surface tension, and the Gibbs and Marangoni effects) are solved numerically.

Keywords

density-functional method multiphase hydrodynamics multicomponent mixture surfaceactive agent Gibbs effect Marangoni effect 

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Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • O. Yu. Dinariev
  • N. V. Evseev

There are no affiliations available

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