Two grid with non matching interpolation

schnellerhase / dolfinx

Next generation FEniCS problem solving environment

https://fenicsproject.org

GNU Lesser General Public License v3.0

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Two grid with non matching interpolation #2

Open schnellerhase opened 1 month ago

schnellerhase commented 1 month ago

See #1

schnellerhase commented 3 weeks ago

[ ] Change to the use of explicit interpolation operators (so a matrix and its adjoint)
[ ] Use the coarse to fine interpolation for this, as the pointwise nature of the interpolation operation would drop information going the other way around - fine to coarse just drops values on DOFs that are no longer available.
[ ] move the restriction/prolongation routines into cleanly separated functions -> first step to an interface to allow for custom operations

schnellerhase commented 2 days ago

To make this work we need to be able to create the interpolation matrix between the two associated spaces, currently fem.interpolation_matrix does not support different meshes though.