Fluid-Structure Interaction

This is a model exemplifying how fluid-structure interactions can be modeled using COMSOL Multiphysics. Viscous forces and the system’s pressure impose forces to the surface of a structure. The deformation in the soft structure is not small and the fluid regime will therefore dynamically change. This means that change in the structure is coupled back to the fluid dynamics.

COMSOL Multiphysics solves this phenomena using the Arbitrary Langrangian-Eulerian (ALE) method. This ensures a true coupling of the physics and the mesh deformation, solved simultaneously.

Velocity field and deformation at steady state.

Animated Model