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  3. I have negative volumes being generated. How can this be avoided?

I have negative volumes being generated. How can this be avoided?

Tagged: 2022 R1, CFX-TurboGrid, fluid-dynamics, General, turbogrid, turbomachinery
    • March 17, 2023 at 8:57 am
      FAQFAQ
      Participant

      Negative volumes in TurboGrid can often be caused by too many layers being generated. A B-spline is used to connect corresponding nodes in each layer together. Wiggles in the B-spline due to many layers close together can generate negative volumes. Try to first reduce the number of layers. Under Layers in the tree outline, set Intermediate Layers Insertion Mode to Manual-Uniform and select a reasonable number of layers (5-6). If this doesn’t resolve the issue, change the Spanwise Mesh Interpolation Guide Curves Type from Automatic to Piece-wise linear.

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