Hull with recess in Michlet ???

Discussion in 'Software' started by SteMar, Jan 20, 2014.

  1. SteMar
    Joined: Jan 2014
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    SteMar New Member

    I have a problem with Michlet hull offsets' input.

    The hull I was studing has a recess due to the propeller tunnel, I tried to insert the hull geometry using spline format but, because of the tunnel, some WL have more than one intersection with the aft stations.

    is it possible to represent this recess in michlet using spline formats or other format?
    If yes, how can I do?

    thanks to all
     
  2. Leo Lazauskas
    Joined: Jan 2002
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    Leo Lazauskas Senior Member

    I'm not sure what you are trying to do. It might be impossible for Michlet to do what you require.
    Do you have any drawings of the hull you can show us?
     
  3. SteMar
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    SteMar New Member

    Some sketch of the hull!

    you can note that a waterline can have 3 point of intersection with the same station.

    is there a way to represent this in michlet?
    thanks for your time.
     

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  4. Leo Lazauskas
    Joined: Jan 2002
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    Leo Lazauskas Senior Member

    No. Michlet does not allow re-entrant shapes.
     
  5. SteMar
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    SteMar New Member

    Thanks for your answer Leo and have a good day.
     
  6. daiquiri
    Joined: May 2004
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    daiquiri Engineering and Design

    Just out of curiosity, Leo - physically (or mathematically) speaking, what is the reason for this limitation? Cannot it be considered (and somehow modeled accordingly) as a special case of multi-hull geometry which, as I understand, can be treated by the Michlet?
     

  7. Leo Lazauskas
    Joined: Jan 2002
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    Leo Lazauskas Senior Member

    The main limitation is that the hull is represented by a distribution of sources
    (and sinks) on a vertical centreplane. I can't see how that could be extended
    to handle re-entrant sections with multiple centreplane distributions.
    A similar problem is that of trying to model a pronged bulbous bow.
    A good way to model that case, or the re-entrant case, is to use a distribution
    of sources over the actual surface of the hull.
     
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