Boundary Layer Does Not Form - Except When Default Settings Used

[Get_Barried]

Hi @cweisheng,

@cweisheng

I specified 13 layers to be added but as you see, only about 3 layers max was generated. Is it possible to say what were the issues?

Deletion of layers is due to the quality controls of the mesher. Earlier in this thread I believe I posted the link about layering in SimScale and one of the troubleshooting steps to prevent layer deletion was to decrease the quality control. I’m sure you have done that before as well, is that setting still maintained?

@cweisheng

Like, can it be said the surrounding volume mesh is not fine enough compared to the layer thickness?

Yes this is also a possible issue. If what I mentioned earlier does not allow you to generate the % of layers needed, then do add a region refinement around that area. That should help in layer generation, but by how much is unknown.

@cweisheng

Or is it likely just an issue of mesh quality, eg. aspect ratio of the cells becoming too large?

Refer back to my first comment. Yes this is usually the case for layer deletion.

@cweisheng

I am trying out larger number of “cells between levels” in the Castellated Mesh settings.

This should not help that much. As mentioned it is the quality controls likely deleting off your layers.

Cheers.

Regards,
Barry