Journal
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
Volume 123, Issue 16, Pages 3757-3780Publisher
WILEY
DOI: 10.1002/nme.6988
Keywords
contact; finite difference methods; fluid-solid systems; fluid-structure interaction; Navier-Stokes
Funding
- Bundesministerium fur Bildung und Forschung
- Deutsche Forschungsgemeinschaft
- European Regional Development Fund
- Ministerium fur Wissenschaft, Forschung und Kunst Baden-Wurttemberg
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This paper introduces a model for the interaction between immersed rigid bodies and two-phase flow, and proposes a full multiphase-field method to solve this problem. By using a normalized phase variable and a wetting boundary condition method, the model is able to represent capillary effects and different wetting behavior, and can handle various setups for two-phase particulate flow.
The interaction of immersed rigid bodies with two-phase flow is of high interest in many applications. A model for the coupling of a Hohenberg-Halperin type model for two-phase flow and a fictitious domain method for consideration of rigid bodies is introduced leading to a full multiphase-field method to address the overall problem. A normalized phase variable is used alongside a method for application of wetting boundary conditions over a diffuse fluid-solid interface. This enables the representation of capillary effects and different wetting behavior based on Young's law. A number of simulations is conducted in order to validate the model and highlight its ability to handle a variety of setups for two-phase particulate flow. This includes dynamic wetting situations, the motion of multiple particles within the two-phase flow and the interaction with arbitrarily shaped solid structures inside the domain.
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