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  3. Chart plot based upon a line in CFD-Post shows abnormal unphysical peaks

Chart plot based upon a line in CFD-Post shows abnormal unphysical peaks

Tagged: 16, cfd-post, fluid-dynamics, General
    • March 17, 2023 at 8:58 am
      FAQFAQ
      Participant

      Is there something wrong with the interpolation algorithm? The line can be defined either as a cut line, taking the result values directly at the element faces. With that option the chart plot is smooth and reasonable. The second option is defining the line as a sample line. The result values are interpolated to a certain number of sample points specified with the line definition. There is a tolerance set under Edit > Options > CFD Post called Interpolation Tolerance. The default value is 0.5 which is 0.5% of the domain extents. This might not be fine enough in every case. Setting this value to a smaller number has resolved the anomaly in the chart plot.

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