On 11/22/22 13:15, Bruno Turcksin wrote:
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You can use two DoFHandler and a single Triangulation. There are no problems.
That's actually what I do in my code because it is much simpler to have a
single Triangulation to work with. The only trick to know is that you can go
from a Triangulation cell to a DoFHandler cell using
https://github.com/dealii/dealii/wiki/Frequently-Asked-Questions#can-i-convert-triangulation-cell-iterators-to-dofhandler-cell-iterators <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fdealii%2Fdealii%2Fwiki%2FFrequently-Asked-Questions%23can-i-convert-triangulation-cell-iterators-to-dofhandler-cell-iterators&data=05%7C01%7CWolfgang.Bangerth%40colostate.edu%7C79d1a2de9ebe45086fd908daccc6575a%7Cafb58802ff7a4bb1ab21367ff2ecfc8b%7C0%7C0%7C638047449496842423%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=brrYTMjtw%2FhnlNUB9Rz%2FIc4QRyh7wlLLVMG7IDuTmlA%3D&reserved=0> This way you an easily go from data on one DoFHandler to data on the other DoFHandler.
To augment Bruno's answer: This is also what step-31 does.
Best
W.
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Wolfgang Bangerth email: [email protected]
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