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-   -   Overlapping and fluctuation ratio (https://www.cfd-online.com/Forums/engrid/154736-overlapping-fluctuation-ratio.html)

javier.delasierra June 19, 2015 05:41

Overlapping and fluctuation ratio
 
Hi all,
I'm currently getting started with engrid and meshing my first cases. I have some trouble with overlapping. It is really hard to mesh the boundary layer without getting an overlapping error, after some iterations and refinement it sometimes meshes the BL. However I get the same error when trying to mesh 3D volume.
Can anyone give me some advise or info about good practices to avoid overlapping?

I have also one more question: after some iterations, I reach a 0% of change ratio, however the fluctuation ratio keeps at 17%. What does this ratio means? It is needed the fluctuation to be near 0%?

Thanks in advance,
Regards


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