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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Update-Dynamic-Mesh failed. Negative cell volume detected › Reply To: Update-Dynamic-Mesh failed. Negative cell volume detected

November 29, 2023 at 9:45 am
Cláudio Corrêa
Subscriber

 

Hello,

I’m trying to reproduce the flow around a mechanically controlled door tutorial ((846) Ansys Fluent: Flow Around A Mechanically Controlled Door. - YouTube)  and my simulation crashed after a few seconds with the error message “Update-Dynamic-Mesh failed. Negative cell volume detected”.

Analysing the results in CFD-Post, the problem occurs in the valve movement because it literally enters the mesh.

How do I fix the error?

Attached is a picture of the movement of the valve.