Ansys Meshing - Refinement Mesh
Written by cfd.ninja
Refinement acts after the mesh exists, splitting the cells attached to a face, an edge or a vertex. Each level subdivides the edges of those cells, so the count climbs steeply with every step.
That makes it useful for a local correction when you do not want to regenerate the whole mesh, and poor as a general strategy, because it can only subdivide what is already there. A bad size distribution stays bad, only with more cells.
When the region that needs resolution is known in advance, a sizing control or a Body of Influence produces a better mesh, since they act while the mesh is being built rather than afterwards.
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