Upscaled phase-field models for interfacial dynamics in strongly heterogeneous domains

Abstract

We derive a new effective macroscopic Cahn-Hilliard equation whose homogeneous free energy is represented by 4-th order polynomials, which form the frequently applied double-well potential. This upscaling is done for perforated/strongly het- erogeneous domains. To the best knowledge of the authors, this seems to be the first attempt of upscaling the Cahn-Hilliard equation in such domains. The new homog- enized equation should have a broad range of applicability due to the well-known versatility of phase-field models. The additionally introduced feature of systemati- cally and reliably accounting for confined geometries by homogenization allows for new modeling and numerical perspectives in both, science and engineering. Our results are applied to wetting dynamics in porous media and to a single channel with strongly heterogeneous walls.

References in corpus (3)

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• Intrinsic versus super-rough anomalous scaling in spontaneous imbibition
• Influence of Disorder Strength on Phase Field Models of Interfacial Growth

Cited by in corpus (6)

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• The contact line behaviour of solid-liquid-gas diffuse-interface models
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• Noise-induced transitions in rugged energy landscapes
• Upscaling of a Cahn-Hilliard Navier-Stokes Model with Precipitation and Dissolution in a Thin Strip
• Rate of Convergence of Phase Field Equations in Strongly Heterogeneous Media towards their Homogenized Limit