The mesh editing tools in Ansys ICEM CFD enable you to diagnose and fix problems in the mesh. You can also improve the mesh quality. A number of manual and automatic tools are available for operations such as conversion of element types, refining or coarsening the mesh, smoothing the mesh, and so on.
The process of improving the mesh quality typically involves:
Check the mesh for problems such as holes, gaps, and overlapping elements using the diagnostic checks available. Fix the problems using the appropriate automatic or manual repair methods.
Check the elements for bad quality and use smoothing to improve the mesh quality.
If the mesh quality is poor, it may be more appropriate to either fix the geometry or to recreate the mesh using more appropriate size parameters or a different meshing method.