The Periodic Condition node defines periodicity or antiperiodicity between two boundaries. If required, activate periodic conditions on more than two boundaries, in which case the Periodic Condition tries to identify two separate surfaces that can each consist of several connected boundaries. For more complex geometries, it might be necessary to use the Destination Selection subnode. With this subnode the boundaries which constitute the source and destination surfaces can be manually specified. The Destination Selection subnode is available from the context menu (right-click the parent node) as well as from the Physics toolbar, Attributes menu.
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When this feature is used in conjunction with a Sector Symmetry feature on connected boundaries, the same periodic condition feature cannot be used on both sides of where the sector symmetry boundaries connect with the periodic boundaries. At least two periodic condition features are required for the model to compute correctly.
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) and select