Discussion Forum

I don't have the wave optics module, but I can see that you are trying to employ Floquet periodicity (which is almost always tricky). I also see that your mesh is very coarse, and that you have NOT copied meshes from source to destination surfaces, so that the periodicity-pairs will be identically meshed. At a minimum, use a finer mesh and do not just mesh in general! Rather, create meshes on source surfaces and then copy them to destination surfaces, so that the periodicity-pair conditions you are trying to specify will then concern identical mesh layouts in each face of the pair. (Then fill in the volume mesh.) There are very probably other issues in your model as well, so this is likely just a starting suggestion. Overall, if you must do a Floquet type symmetry model, then I suggest you start with the simplest one that you can get to work well. Then build upon what you learn. Good luck!

Thank you for your response. The reason I used general mesh is because if I try above coarse mesh the file size increases above 5MB which was not allowing me to upload the file so for uploading purpose I changed the mesh to normal bringing the file size down. Here I built very simple model, just with air, and instead of floquet type I used continuity but still there is an error which is same, which I don't understand.

Well, I don't think I can offer much more advice, since I don't have the ewfd module. Perhaps someone else can help. Meanwhile, have you looked up example files in the Application Library that employ periodic (and especially Floquet periodic) boundary conditions?