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Improve periodic coupling a bit #55

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Merged
merged 2 commits into from
Apr 29, 2025
Merged

Improve periodic coupling a bit #55

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edbcfd6
Remove grid arg from Example212 and Example 312
pjaap Apr 29, 2025
16790a4
give (hopefully) helpful error message in get_periodic_coupling_matrix
pjaap Apr 29, 2025
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2 changes: 1 addition & 1 deletion examples/Example212_PeriodicBoundary2D.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -153,7 +153,7 @@ function main(;
return nothing
end

coupling_matrix = get_periodic_coupling_matrix(FES, xgrid, reg_left, reg_right, give_opposite!)
coupling_matrix = get_periodic_coupling_matrix(FES, reg_left, reg_right, give_opposite!)
display(coupling_matrix)
assign_operator!(PD, CombineDofs(u, u, coupling_matrix; kwargs...))
end
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2 changes: 1 addition & 1 deletion examples/Example312_PeriodicBoundary3D.jl
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Expand Up @@ -168,7 +168,7 @@ function main(;
y[1] = width - x[1]
return nothing
end
coupling_matrix = get_periodic_coupling_matrix(FES, xgrid, reg_left, reg_right, give_opposite!)
coupling_matrix = get_periodic_coupling_matrix(FES, reg_left, reg_right, give_opposite!)
display(coupling_matrix)
assign_operator!(PD, CombineDofs(u, u, coupling_matrix; kwargs...))
end
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4 changes: 4 additions & 0 deletions src/helper_functions.jl
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Expand Up @@ -347,6 +347,10 @@ function _get_periodic_coupling_matrix(
fe_vector.entries[local_dof] = 1.0

# interpolate on the opposite boundary using x_trafo = give_opposite
if !haskey(search_areas, face_numbers_of_bfaces[i_boundary_face])
throw("face $(face_numbers_of_bfaces[i_boundary_face]) is not on source boundary. Are the from/to regions and the give_opposite function correct?")
end

interpolate!(
fe_vector_target[1],
ON_FACES, eval_point,
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