Angle of waves coming off the hull

Discussion in 'Boat Design' started by netjaws, Jan 23, 2004.

  1. netjaws
    Joined: Jan 2004
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    Likes: 1, Points: 8, Legacy Rep: 22
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    netjaws Junior Member

    Just a quick question.

    Anyone know, or know where I can find out the angle that waves (bow, stern, etc) come off the hull? I know it's supposed to be a constant - like 23 or 37 degrees or something but I haven't been able to find a thing.

    Thanks,
    Josh
     
  2. Suede
    Joined: Dec 2003
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    Location: Sweden

    Suede Junior Member

  3. Leo Lazauskas
    Joined: Jan 2002
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    Location: Adelaide, South Australia

    Leo Lazauskas Senior Member

    The angle depends on the water depth and the speed. The "Kelvin angle" in deep water and assuming low speeds (i.e. assuming the depth-based Froude number small) is about 19.3 degrees. That is the angle between the hull centreline and the outer part of the V-shaped wake.

    Take a look at www.cyberiad.net/wakefd.htm to see how the angle depends on speed and water depth.

    Cheers,
    Leo.
     

  4. netjaws
    Joined: Jan 2004
    Posts: 75
    Likes: 1, Points: 8, Legacy Rep: 22
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    netjaws Junior Member

    Thanks

    Thanks for the help..
    those are awesome web sites.

    Josh
     
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