A diffuse-interface method for two-phase flows with soluble surfactants

  title={A diffuse-interface method for two-phase flows with soluble surfactants},
  author={Knut Erik Teigen and Peng Song and John S. Lowengrub and Axel Voigt},
  journal={Journal of computational physics},
  volume={230 2},
A method is presented to solve two-phase problems involving soluble surfactants. The incompressible Navier-Stokes equations are solved along with equations for the bulk and interfacial surfactant concentrations. A non-linear equation of state is used to relate the surface tension to the interfacial surfactant concentration. The method is based on the use of a diffuse interface, which allows a simple implementation using standard finite difference or finite element techniques. Here, finite… CONTINUE READING


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