[dune-pdelab] Periodic Boundary Conditions in Sequential

[Dodwell, Timothy]

Dear All,

I have a post-doc modelling a 2D problem on a donut. We have implemented this in YaspGrid with Geometry Grid.

We clearly need to setup periodic boundary conditions.

I thought DUNE handled this much like parallel domain decomposition, so you have to set the overlap to one and tell the grid it is periodic (then that is it!)

From the look of our solutions the periodic boundary conditions have not been implemented correctly


-    Does YaspGrid ignore the overlap if you run it in sequential mode?



-    Do you have to write a constraint space for periodic boundary conditions in sequential (all the examples of this are assembled elementwise which is not what we want for periodic boundary conditions!)

Any help would be great! Thanks in advance!

Tim


Dr Tim Dodwell
Senior Lecturer in Engineering Mathematics
Rm 221 - Harrison Building
College of Engineering, Mathematics & Physical Sciences
University of Exeter
Exeter
Devon
EX4 4PY

mail: t.dodwell(at)exeter.ac.uk<http://exeter.ac.uk/>
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web: http://emps.exeter.ac.uk/engineering/staff/td336
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