Coupled PDEs on domains with different dimensions
5 months ago by
I'm quite new to fenics.
I'm stuck implementing in Fenics two coupled PDEs defined on different domains.
The 1st PDE is defined on a rectangular domain, the 2nd PDE is defined on the bottom side of the rectangle.
I was able to extract the 1D Boundary/SubMesh from the 2D mesh but I don't know how to implement the variational form and solve it.
I can't use mixed space elements because the dimensions are different.
I read (https://fenicsproject.org/qa/5859/can-fenics-solve-a-1d-pde-as-the-boundary-of-a-2d-pde/) that the problem should be solved iteratively, but I don't know how to implement it in fenics.
Any help is greatly appreciated.
Many thanks in advance.
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