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Incorrect patch definition for cyclic/periodic boundaries:

Error

Solver error: Incorrect definition of patch type for cyclic/periodic boundaries.

What happened?

Cyclic or periodic boundaries were used, whose definition in the mesh was incorrect or incomplete.

What could be the possible reason?

1- The mesh was created on the SimScale platform - the meshing algorithms on SimScale currently do not generate meshes that support cyclic or periodic boundary conditions.

2- The cyclic behaviour of the corresponding patches in the uploaded mesh have not been properly defined.

What can I do now?

SimScale currently does not support generation of meshes that support cyclic or periodic boundaries. Please make sure that you use an uploaded mesh with the right patch specifications. For more information on how to correctly specify cyclic boundary conditions, please follow the following links:

1- Cyclic patches for conforming boundaries: This link descibes cyclic patch types for boundaries whose faces match almost perfectly.

2- Cyclic patches for non-conforming boundaries: This link descibes cyclic patch types for boundaries whose faces do not match perfectly (for example, due to refinement). Note that the boundaries should still have the same area and perimeter.

For information on how to upload a mesh to SimScale, please follow this link.

Note

If the above suggestions did not solve your problem, then please post the issue on our forum or contact us.