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Fluids

Fluids

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  3. Error when making a remote call to participant Fluent_1.

Error when making a remote call to participant Fluent_1.

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    • April 23, 2025 at 2:30 am
      jimbo
      Subscriber

      Currently using FLUENT+TRANSIENT module, case 1 uses flow rate 0.05 and the material is air, and this error does not occur. case 2 only changes the flow rate and structure density, and this error occurs. I would like to ask the cause of this error and which settings will affect it.

    • April 23, 2025 at 7:01 am
      abhishek.roy
      Ansys Employee

      Hi, Please check the transcript file (.trn) to get more clues

      • April 23, 2025 at 11:00 am
        jimbo
        Subscriber

        This error occurs during simulation. Open the (.trn) file. What information can be observed to determine which settings are wrong?

    • April 23, 2025 at 11:57 am
      abhishek.roy
      Ansys Employee

      I can see the error: Update-Dynamic-Mesh failed. Negative cell volume detected. Check your dynamic mesh setup. Try reducing the time step

      • April 26, 2025 at 11:01 am
        jimbo
        Subscriber

        I have confirmed that the dynamic mesh settings smoothing and remeshing are both turned on, but the time step size still has negative volume. It often gets stuck at coupling interval3 and convergence fails. I wonder if there are other settings that can solve this problem. Thank you.

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