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Re: [bolger] AS29 - vortex generators ?

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  • Fred Schumacher
    It seems as if vortex generators act in a similar fashion to the meginhufr of Viking ships. Meginhufr (or meginhufer) means strong plank and is a horizontal
    Message 1 of 4 , Apr 23, 2009
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      It seems as if vortex generators act in a similar fashion to the meginhufr
      of Viking ships. Meginhufr (or meginhufer) means strong plank and is a
      horizontal plank that forms an upside-down L shape in the hull that will
      spin off a strong vortex. There's a drawing here:
      http://www.megin.dk/Erland1.htm. When the boat is looked at from behind, one
      can see two vortexes trailing behind making the boat look as if it's riding
      on two rails. These vortexes reduce wave-making resistance and reduce
      leeway.

      Fred Schumacher



      On Tue, Apr 21, 2009 at 8:42 PM, Bill Kreamer <kreamers@...>wrote:

      >
      > My understanding is that vortex generators create small areas of
      > turbulence(and small amounts of drag) that, by energizing the local flow,
      > enable theflow to remain attached to a lifting surface a bit longer as its
      > angle ofattack increases, instead of separating earlier and creating lots of
      > drag.
      >


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