This phenomenon is characterized by fluid flow deforming structures to an extent that influences the flow path through the changed geometry. Fluid-structure interaction (FSI) is encountered in many different branches of engineering and science, and on scales ranging from aircrafts and wind turbines to microsensors in molecule detection.

Modeling FSI requires a multiphysics coupling between the laws that describe fluid dynamics and structural mechanics.

Fluid-Structure Interaction

This example illustrates how fluid flow can deform a structure, which in turn affects the fluid flow. The transient model indicates the time taken for the system to reach steady state.