AQWA Free surface elevations

Discussion in 'Software' started by Contraband, May 16, 2013.

  1. Contraband
    Joined: Mar 2006
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    Location: South Africa

    Contraband Junior Member

    Hi All
    I am trying to model a moored vessel in the lee of an offshore breakwater. I would like to compare AQWA's diffraction modelling around the breakwater with a Boussinesq wave model. In order to do this I would like to extract a time series of surface elevations in the lee of the AQWA breakwater model. My thinking is that a neutrally buoyant float with DOF's constrained (in all freedoms but heave) would work. But it seems a bit of a long way around. Can anyone suggest another method of extracting surface elevations at a specific point in the model? Any help appreciated.
  2. Dayu
    Joined: Apr 2013
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    Location: China

    Dayu Junior Member

    Please refer to 4.13.16 and 4.2.2(FPNT) of AQWA Reference Manual V. 14.
    4.13.16 for input, 4.2.2 for output.
    Hope it would be helpful.
  3. CWTeebs
    Joined: Apr 2011
    Posts: 232
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    Location: Maine

    CWTeebs AnomalyGenerator

    According to the documentation FPNT is only for AQWA-LINE and only prints the amplitude. I haven't used FPNT elements.

    To get a time history of the free surface elevation you might try ZRWS (4.18.9), which stands for "Z Relative to Water Surface." You could add the nodes to the fixed structure.

    Hope this helps.
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