Structural Fluid Interaction (FSI)

Structural Fluid Interaction (FSI) is the interaction of movable or deformable structure with an internal or surrounding fluid flow.

Fluid–structure interactions can be stable or oscillatory. In oscillatory interactions, the strain induced in the solid structure causes it to move such that the source of strain is reduced, and the structure returns to its former state only for the process to repeat the process. ‘Flutter’.

Fluid–structure interactions are a crucial consideration in the design of many designs, e.g. aircraft, blades, aerodynamic wings etc. If during the design process you failing to consider the effects of oscillatory interactions, the frequency impact can be catastrophic on a part or piece of equipment especially in equipment design with materials susceptible to fatigue.

Typical applications include:

  • Aerodynamic wing section in race cars
  • Propellers
  • Fluid Driven Vibration
  • Vortex Shedding

Other Applications of CFD include:

1. Aerodynamics

2. Industrial Fluid Dynamics

3. Heat Transfer

4. Hydrodynamics

 

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