Ansys Employee


I recommend instead of UDF for overset meshes, it is recommended that the gaps between walls are resolved by a minimum of 4 cells, in order to create a valid overset interface and prevent the creation of orphan cells. You can specify that the cells in gaps with a resolution that is less than this recommendation are marked, so that any subsequent overset adaption (manual or automatic) increases the resolution to 4 or more cells.For further understanding kindly refer this link 

3.4. Overset Gap Adaption (ansys.com)

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