Ripples in the mesh

[Get_Barried]

Hi @croldanp,

I would recommend setting the min surface refinements to 2 while setting the feature refinement to 0 m and level 3 to see if we can get better mesh conformation to remove the ripples. The valve refinements are fine however so there is no need to adjust them. You can remove the region refinement as you have not created a geometry primitive so that won’t do anything. You may also want to increase the surface refinement levels of the selection shown below to a slightly higher value, maybe min 3 and max 4 to ensure that it conforms better.

Also do ensure you are not overlapping refinements like you did in the mesh you pointed me to. Refer to the “refine-surfaces” where you have selected your entire geometry while also adding refinements for other surfaces. This may cause issues. You want to ensure that you perform a single refinement for any particular surface so as to not also reduce the level of control you have over the mesh.

@crlsrldnp

As a second question (not sure if it would be related to the ripples), I also wanted to point out that when I check this mesh iwith slices in the post-processor (saved state: “Copy of Refined polished chan - Mesh Check”), the ripples do not seem to be causing serious problems to the inner portion of the mesh, however, I do note that there is no expansion layer being build, although I am requesting it with a layer refinement step, but instead the “refinements” obtained at the wall boundaries seem to be following the feature refinement at edge step that I also have added.

Your expansion layers are not showing up likely due to the quality control of the mesher. Refer to this document on how to implement the layers and resolve possible issues.

Hope this helps!

Cheers.

Regards,
Barry