Project

Inverted Flag Flapping

Simulation of an inverted flag flapping in fluid flow. Shows the self-excited oscillations and energy harvesting potential.

1 Challenge

Understanding the self-excited oscillations of an inverted flag in fluid flow for potential energy harvesting applications.

2 CFD Approach

Simulation of flapping inverted flag with helicity iso-surfaces (cross product of velocity and vorticity) to show 3D wake structures.

3 Results

The structures separate from the flag and break up into small-scale turbulence in the wake.

4 Engineering Conclusion

The simulation reveals the highly unsteady and massively separated wake dynamics.

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