The picture below taken from here , displays from left to right:
H1−conforming (continuous)
H(curl)−conforming (continuous tangential component)
H(div)−conforming (continuous normal component)
L2−conforming (discontinuous)
The picture also displays from top to bottom the increasing discretization order for the full de Rham complex.
Is the right-hand side of the picture above, i.e. L2−conforming (discontinuous), actually showing the equivalent of the integration points discussed on CCX documentation ?
In mfem you can choose different integration schemes or even code a custom one.
You would need to compare the integration point coordinates from mfem with the calculix source code to see if they are equivalent.
https://docs.mfem.org/html/intrules_8cpp_source.html
!
! contains Gauss point information
!
! gauss1d1: lin, 1-point integration (1 integration point)
! gauss1d2: lin, 2-point integration (2 integration points)
! gauss1d3: lin, 3-point integration (3 integration points)
! gauss2d1: quad, 1-point integration (1 integration point)
! gauss2d2: quad, 2-point integration (4 integration points)
! gauss2d3: quad, 3-point integration (9 integration points)
! gauss2d4: tri, 1 integration point
! gauss2d5: tri, 3 integration points
! gauss2d6: tri, 7 integration points
! gauss3d1: hex, 1-point integration (1 integration point)
! gauss3d2: hex, 2-point integration (8 integration points)
! gauss3d3: hex, 3-point integration (27 integration points)
! gauss3d4: tet, 1 integration point
! gauss3d5: tet, 4 integration points
! gauss3d6: tet, 15 integration points
! gauss3d7: wedge, 2 integration points
! gauss3d8: wedge, 9 integration points
show original
1 Like
