mirror of
https://github.com/JuliaFEM/JuliaFEM.jl.git
synced 2026-09-27 04:10:54 +00:00
Jukka Aho
54 lines
2.0 KiB
Julia
54 lines
2.0 KiB
Julia
# This file is a part of JuliaFEM.
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# License is MIT: see https://github.com/JuliaFEM/JuliaFEM.jl/blob/master/LICENSE.md
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using Test
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using LinearAlgebra
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using JuliaFEM
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using JuliaFEM: Hex8FacetMaps, build_hex20_facet_maps, hex20_edge_orientation_sign
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using JuliaFEM: FacetMassKernel, EdgeMassKernel
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using JuliaFEM: DOFBasedCOOAssembler, DOFBasedCOOCache, assemble!, extract_system
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@testset "build_hex20_facet_maps (single Hex20)" begin
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nodes = Vec{3, Float64}[reference_coordinates(Hex20())...]
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conn = ntuple(i -> UInt32(i), 20)
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mesh = Mesh{Hex20}(nodes, [conn])
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maps = build_hex20_facet_maps(mesh)
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@test maps isa Hex8FacetMaps
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@test maps.n_edges == 12
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@test maps.n_faces == 6
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for le in 1:12
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@test hex20_edge_orientation_sign(conn, le) == maps.elem_edge_orientation[le, 1]
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end
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S = @DOFSet{e::DOF{Float64, Edge}}
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elements, handler = create_elements!(mesh, Element{Hex20, Serendipity{2}, S})
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@test handler.total_dofs == 12
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end
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@testset "FacetMassKernel / EdgeMassKernel on reference Hex20 (corner skeleton)" begin
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nodes = Vec{3, Float64}[reference_coordinates(Hex20())...]
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conn = ntuple(i -> UInt32(i), 20)
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mesh = Mesh{Hex20}(nodes, [conn])
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X = nodes
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expected_face_area = sum(hex8_face_area_physical(X, lf) for lf in 1:6)
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expected_edge_len = sum(hex8_edge_length_physical(X, le) for le in 1:12)
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Sf = @DOFSet{flux::DOF{Float64, Face}}
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ef, hf = create_elements!(mesh, Element{Hex20, Serendipity{2}, Sf})
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kf = FacetMassKernel(mesh)
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cf = DOFBasedCOOCache(ef, hf, mesh, kf)
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assemble!(cf, DOFBasedCOOAssembler(), kf, mesh)
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Kf, _ = extract_system(cf)
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@test sum(diag(Matrix(Kf))) ≈ expected_face_area rtol = 1e-10
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Se = @DOFSet{circ::DOF{Float64, Edge}}
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ee, he = create_elements!(mesh, Element{Hex20, Serendipity{2}, Se})
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ke = EdgeMassKernel(mesh)
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ce = DOFBasedCOOCache(ee, he, mesh, ke)
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assemble!(ce, DOFBasedCOOAssembler(), ke, mesh)
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Ke, _ = extract_system(ce)
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@test sum(diag(Matrix(Ke))) ≈ expected_edge_len rtol = 1e-10
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end
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