Hi everybody, I am looking for a way to tag the interface between two subdomains in dolfinx (if this is not already done in, e.g., gmsh). The cell tags are defined for each cell. My idea was to write all nodes that belong to each cell tag to a list and find duplicate nodes as they belong to the in…

You can use the facet_to_cell connectivity to do this. Consider the following: import numba import numpy.typing as npt import dolfinx from mpi4py import MPI import numpy as np import time N = 100 mesh = dolfinx.mesh.create_unit_square(MPI.COMM_WORLD, N, N) def some_cells(x): return (abs(x[0…

Okay great! I will also consider this new solution. Thank you!

Tag entities between two subdomains

mesh

tuderic March 21, 2023, 4:03pm 2

The solution is similar to this post: Plotting subdomains/internal boundaries - #8 by dokken

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Tag entities between two subdomains

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