Can one controlling element growth after specifying surface element size

[dilgert]

Can one control the element size growth after specifying a surface element size.   In solidworks, one can specify the ratio of  the next set of elements as the mesh is created from the surface.  Can one do this in Creo?   I am running a transient thermal analysis with a very high convection coefficient.   Lowering the element size to 0.25 mm has had the surface temperature results agree with the theoretical results.   However, at various depths below the surface the error becomes 3-5 % unless I specify an element size that will result in way to many elements.

David

[mlindqvist]

You can specify a surface element size and a low value for aspectio ratio (AR). Default A.R. is 30,  which means that an element adjacent to a surface element (inside the volume), can be up to 30 times longer than the surface element. By specifying a low AR  the element size will grow more slowly as you move inward into the volume from the surface that has maximum element size control.

Try reducing AR step by step. For example, start with 10, then move on to 8 or 5 etc. Be aware that specifying a too low AR may result in meshing problems and/or excessive number of elements.

The AR is changed under AutoGEM settings.

[gkoch]

Hello David,

did the responses from Steven and Mats help you?

If yes, please take the time to mark the most releavant post as Correct Answer to signal the community that this thread is answered.

Maybe you also want to share your experience when trying.

Thanks,

Gunter