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-   -   Update Dynamic mesh failed- Negative cell volume detected (https://www.cfd-online.com/Forums/fluent-udf/186853-update-dynamic-mesh-failed-negative-cell-volume-detected.html)

kywong5 April 24, 2017 08:57

Update Dynamic mesh failed- Negative cell volume detected
 
Dear all,

Good evening. I'm trying to move a cube box (0.2m x 0.2 m x 0.2m) in a domain (1m x 1m x 1m). The movement distance will be 0.2m in x direction (Origin 0.5, 0, 0.5). I'm seeking for your kind opinion in solving this error:
Update-Dynamic-Mesh failed. Negative cell volume detected.

1) Tetrahedral mesh- No issue, I can obtain the result.
2) Hexahedral/ cut cell mesh- Update-Dynamic-Mesh failed. ((i) Using layering method-failed, (ii) using smoothing with Laplace method- failed)

Im using Fluent 14.

Thank you.


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