Dept of Aeronautics and Astronautics

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Movie:  Sound generation in a parallel blade vortex interaction (thanks to Alasdair)

This video shows the generation and propagation of acoustic waves resulting from the interaction of a two bladed rotor with a vortex. The blade passes by the vortex at the beginning of the video (and at the half way point in the movie). The vortex axis cuts right through the blade, but this graph shows that inviscid CFD methods are able to get most of the physics right.


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