concise description

This commit is contained in:
Martin Diehl 2020-09-19 11:41:16 +02:00
parent d0b5905544
commit c108b4df66
1 changed files with 3 additions and 4 deletions

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@ -1030,10 +1030,9 @@ pure function IPareaNormal(elem,nElem,connectivity,node)
IPareaNormal(1:3,f,i,e) = math_cross(nodePos(1:3,2) - nodePos(1:3,1), &
nodePos(1:3,3) - nodePos(1:3,1))
case (4) ! 3D 8node
! for this cell type we get the normal of the quadrilateral face as an average of
! four normals of triangular subfaces; since the face consists only of two triangles,
! the sum has to be divided by two; this whole prcedure tries to compensate for
! probable non-planar cell surfaces
! Get the normal of the quadrilateral face as the average of four normals of triangular
! subfaces. Since the face consists only of two triangles, the sum has to be divided
! by two. This procedure tries to compensate forprobable non-planar cell surfaces
IPareaNormal(1:3,f,i,e) = 0.0_pReal
do n = 1, m
IPareaNormal(1:3,f,i,e) = IPareaNormal(1:3,f,i,e) &