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Old 05-17-2019, 03:28 PM   #15 (permalink)
freebeard
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Quote:
I am not quite sure I am following "angle of the flow to lengthwise of the trim," could you please reiterate?
[speculation]
  • A ridge parallel to flow would have negligible effect.
  • A ridge athwart the flow would act like a Gurney flap; given enough height, promoting reattachment.
  • A ridge at a 45į angle could trigger a vortex on the lee side.
[/speculation]
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