The Coarsen Selected Mesh option coarsens selected elements
from the mesh.
Note: This feature works for quad and quad dominant mesh, but not all tri mesh. In order to coarsen selected all tri or mostly tri mesh, freeze the parts that are not to be coarsened and then use Coarsen All Mesh.
- Elements
specifies the elements selected for coarsening.
- Min aspect ratio
the minimum aspect ratio (the circumsphere ratio) allowed for the resulting coarsened elements. The lower the minimum aspect ratio, the more elements in the mesh will be coarsened.
- Max size
is the largest tetra size allowed by coarsening. Only elements below this size will be coarsened, and only up to this size. The larger this value, the more the mesh will be coarsened.
- Max surface deviation
For surface elements (triangles), this option coarsens the elements based on the distance from the centroid of the element to the surface, in the direction normal to the surface. If this distance is less than the defined Max Surface Deviation, the elements will be coarsened.
- Number of Iterations
is the number of smoothing iterations. Smoothing will be automatically performed after the coarsening process if this number is nonzero.
- Maintain surface sizes
If this is enabled, it will attempt to coarsen up to the sizes prescribed on the geometry (points, curves and surfaces). Local coarsening can be achieved this way by only changing tetra sizes on specific entities. When tetra mesh is generated, the elements are divided to these sizes. So if no tetra sizes are changed after generating the tetra mesh, then enabling this option will prevent any coarsening from being performed.