ICEMCFD Smoothing causes collapsing cells in farfield

[volkan.coskun]

Hi everyone,

I am working on a 2D surface mesh that was imported into ICEM CFD (not created natively using blocking). I am trying to smooth the mesh to handle large volume transitions, particularly around the edge for the junction between a blunt nose and a cone.

While the smoothing works well for most of the domain (using Laplace and Orthogonality algorithms with boundary layers frozen), I am experiencing cell collapse/stacked edges in the farfield region where the volume change is most significant.

Since this is an imported mesh without a blocking structure, how can I prevent these singularities? Are there specific settings to better constrain the farfield nodes? I tried freezing couple of layers but it didn't work. The rest of mesh is smoothed nicely as i expected.

Any advice on improving the mesh quality in these high-expansion regions would be greatly appreciated.