quadrangle(7rheolef) rheolef-6.1 quadrangle(7rheolef)
NAME
quadrangle - Quadrangular reference element
DESCRIPTION
The quadrangular reference element is [-1,1]^2.
NUMBERING
y
3---------2
| |
| |
| |
| |
0---------1 x
Curved high order Pk quadrangles (k >= 1), in 2d or 3d geometries, are supported. These quadrangles have additional edge-nodes and face-
nodes.
THESE NODES ARE NUMBERED AS
first vertex, then edge-node, following the edge numbering order and orientation, and finally the face internal nodes, following the quad-
rangle lattice. See below for edge numbering and orientation.
3-----6-----2 3---9---8---2
| | | |
| | 10 14 15 7
7 8 5 | |
| | 11 12 13 6
| | | |
0-----4-----1 0---4---5---1
P2 P3
IMPLEMENTATION
const size_t dimension = 2;
const Float measure = 4;
const size_t n_vertex = 4;
const Float vertex [n_vertex][dimension] = {
{ -1,-1 },
{ 1,-1 },
{ 1, 1 },
{ -1, 1 } };
const size_t n_edge = 4;
const size_t edge [n_edge][2] = {
{ 0, 1 },
{ 1, 2 },
{ 2, 3 },
{ 3, 0 } };
rheolef-6.1 rheolef-6.1 quadrangle(7rheolef)
