2018 | OriginalPaper | Buchkapitel
Weakly Nonlocal Non-Equilibrium Thermodynamics: the Cahn-Hilliard Equation
verfasst von : Péter Ván
Erschienen in: Generalized Models and Non-classical Approaches in Complex Materials 1
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The Cahn-Hilliard and Ginzburg-Landau (Allen-Cahn) equations are derived from the second law. The intuitive approach of separation of full divergences is supported by a more rigorous method, based on Liu procedure and a constitutive entropy flux. Thermodynamic considerations eliminate the necessity of variational techniques and explain the role of functional derivatives.