Reply To: mesh refinement for convergence

[Keyur Kanade]

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Before proceeding, please check orthogonal quality of the mesh.
The min orthogonal quality should be above 0.1 to proceed to solver. If it is less than 0.1 then please improve the mesh.
First check the locations of the bad elements. Please see following video for the same.

https://www.youtube.com/watch?v=ZDADSSN8hOs

Once you have locations, please check if you can improve mesh using different mesh sizing. Please see following video.

https://www.youtube.com/watch?v=w4q6q8nKF3U

If this does not help, you may need to check if you can use pinch control or virtual topology.

https://www.youtube.com/watch?v=wdKMqfJV1Ys
https://www.youtube.com/watch?v=RELLrEJ9chg

If this does not help, please go to geometry and modify or simplify geometry at those locations in SpaceClaim.

Also make sure you have sufficient refined mesh to get convergence. Please cross check turbulence model you are using and then check the mesh requirement for the same. Please search forum for the same.
Regards Keyur
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