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6.5.2 Repairing Duplicate Shadow Nodes

If the Grid/Check report includes the following message:

WARNING: node on face thread 2 has multiple shadows.

it indicates the existence of duplicate shadow nodes. This error occurs only in grids with periodic-type walls. You can repair such a grid using the following text command:

grid $\rightarrow$ modify-zones $\rightarrow$ repair-periodic

If the interface is rotational periodic, you will be prompted for the rotation angle.


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