Originally posted by mrbreau
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Actually, it may be closer to on-topic than we may realize!
Notice the action occurring in this video:
YouTube - SPR Cavitation Dye Test
And the descriptor of what is happening here:
R&D - Hydro Dynamics, Inc.
I can't help but see a similarity between the top view profile of David's elements and the cavity used in those SPR rotors.
Could it be that David is getting a similar cavitation in the elements with air? Perhaps the relative humidity and dew point are critical factors
Just exploring all the possibilities here
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