Help in Software development

Discussion in 'Software' started by b1ck0, Mar 2, 2010.

  1. b1ck0
    Joined: Mar 2010
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    Location: Varna/Hamburg

    b1ck0 Senior Member

    Hi, I am a student in Naval Architecture and Marine Engineering. Right now, I am trying to develope an application that calculates the hydrodynamic ( inertial and damping ) forces, that interact with the ship. I have interpolated the curves of Salkaev, and I have successfuly interpolated them to 6-th order polynoms. So far my application is calculating the dimentionless coefficients Lambda ( 22, 33, 24, 44 ) but I have problems in "giving them a dimension" and in integrating them for the lenght of the ship. If anyone can help, please ! :)

    I want to appology for my bad English, but it's not my native language.
     
  2. b1ck0
    Joined: Mar 2010
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    Location: Varna/Hamburg

    b1ck0 Senior Member

    Hi again ... I've developed the application to a state, witch I can calculate added mass and damping coefficient in Heave motion. Please check my results.
    http://88.213.199.107/Ship Dynamics/
     
  3. daiquiri
    Joined: May 2004
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    Location: Italy (Garda Lake) and Croatia (Istria)

    daiquiri Engineering and Design

  4. LyndonJ
    Joined: May 2008
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    Location: Australia

    LyndonJ Senior Member

    What are the curves of Salkaev ? I couldn't find reference to them ?
     

  5. b1ck0
    Joined: Mar 2010
    Posts: 128
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    Location: Varna/Hamburg

    b1ck0 Senior Member

    First Haskind has offered an analitical equations for the hydrodynamic forces. After that Salkaev solved the equations and represend the solution in a graphic form. The coefficient that you will get from the graph is dimensionless, after that you have to give it a dimension by multipling it with your ship dimensions. These curves that I upload are only for heave motion ... there are a lot of curves for Roll, Pitch and Pitch-Heave motions, there are curves for damping coefficients too ...
     

    Attached Files:

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