Fluids

Fluids

How can I avoid having huge (84GB) simulation data file in AQWA?

    • Abuyusra
      Subscriber

      Mostly it causes the file to crash.

    • Mike Pettit
      Ansys Employee

      Which data file are you looking at, in particular?
      The solution method employed by Aqwa for the radiation/diffraction analysis requires some very large scratch files to be created in the Windows %TEMP% folder, where the size of these files scale with the square of the number of diffracting elements. So, the simplest answer here may be to reduce the number of elements, if possible.
      If your model is symmetric, and you are comfortable using the Aqwa solver outside of Workbench, you can use the SYMX and/or SYMY data records in Data Category 2. This will reduce the memory requirement (and computation time) of the radiation/diffraction calculation significantly.
      If you are running a long duration time domain hydrodynamic analysis, and you have dynamic cables or tether connections, the DCP and/or TET output files may be very large. In this case you may consider to increase the Output Step interval in the time response Analysis Settings. This will reduce the amount of data that is stored in the Aqwa output files, but it will also reduce the time resolution of that data (which may be important if you are doing statistical analysis in post-processing).
      I hope this helps.
      Mike
    • Abuyusra
      Subscriber
      what an elaborate response. Thank you very much.

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