# [Gmsh] meshing rounded surfaces

**Magdalena Stolarska**
stolarsk at math.umn.edu

*Tue Nov 2 07:08:57 CET 2004*

I am working on a dynamic, large-deformation, moving mesh problem. I use
gmsh to generate the original mesh, and for the particular problem on
which I am working I have been generating hemispherical or semi-ellipoidal
meshes. The problem that I am having is that near the rounded surface of
the mesh, the nodes of the tetrahedra mesh to be nearly co-planar, and
this is causing problems within a few time iterations. I realize that one
way to solve the problem is to periodically remesh. However, I want to be
able to do this as infrequently as possible. So, my question is: Is
there anyway to control how coplanar some of the nodes in 3d tetrahedral
meshes are? Thanks is advance for your response.
MS