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Model ID: 3969

Fluid-Structure Interaction with Two Fluid Phases

The following example demonstrates techniques for modeling a fluid-structure interaction containing two fluid phases in COMSOL Multiphysics. It illustrates how a heavier fluid can induce movement in an obstacle using the arbitrary Lagrangian-Eulerian (ALE) technique along with the Two-Phase Flow, Phase Field application mode in the MEMS Module.

The model geometry consists of a small container, in the middle of which is an obstacle. Initially a heavier fluid (water) is present in the left domain and air is present everywhere else. A feedback loop allows the displaced air to move from the right domain back to the left domain.

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