Gradient dynamics models for liquid films with soluble surfactant

  title={Gradient dynamics models for liquid films with soluble surfactant},
  author={Uwe Thiele and Andrew J. Archer and Len M Pismen},
  journal={arXiv: Fluid Dynamics},
In this paper we propose equations of motion for the dynamics of liquid films of surfactant suspensions that consist of a general gradient dynamics framework based on an underlying energy functional. This extends the gradient dynamics approach to dissipative non-equilibrium thin film systems with several variables, and casts their dynamic equations into a form that reproduces Onsager's reciprocity relations. We first discuss the general form of gradient dynamics models for an arbitrary number… 

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