TET_MESH_ORDER4
Datasets of Meshes of 4-Node Tetrahedrons

TET_MESH_ORDER4 is a dataset directory which contains tet meshes, that is, sets of 3D points, and information arranging groups of four points into tetrahedrons.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Related Data and Programs:

FEM2D, a data directory which contains examples of FEM files, three text files that can be used to describe many 2D finite element models;

TET_MESH, a C++ library which carries out various operations on tetrahedral meshes.

TET_MESH_DISPLAY, a MATLAB program which reads in the node and element files defining a tet mesh and displays a wireframe image.

TET_MESH_DISPLAY_OPENGL, a C++ program which reads a 3D tet mesh and displays the nodes and edges using OpenGL.

TET_MESH_L2Q, a C++ program which reads information about a 4-node (linear) tet mesh and creates data defining a corresponding 10-node (quadratic) tet mesh;

TET_MESH_ORDER10, a data directory which contains a description of a quadratic tet mesh of a set of 3D points, using a pair of files to list the node coordinates and the 10 nodes that make up each tetrahedron;

TET_MESH_ORDER10, a dataset directory which contains examples of order 10 tetrahedral meshes.

TET_MESH_QUALITY, a C++ program which computes quality measures of a tetrahedral mesh.

Datasets:

BOX_4x4x3 is the rectangular region [-2,2]x[-2x2]x[0,3] containing 99,620 nodes and 562,947 elements.

• box_4x4x3_nodes.txt, the node file;
• box_4x4x3_elements.txt, the element file.

CUBE is the 8 vertices of the unit cube [0,1]x[0,1]x[0,1], defining 6 elements of equal volume but not equal shape.

• cube_nodes.txt, the node coordinate file.
• cube_elements.txt, the element file.
• cube.png, a PNG image of the mesh.

CUBE_4x4x4 is 64 nodes of the cube [0,4]x[0,4]x[0,4], defining 162 elements.

• cube_4x4x4_nodes.txt, the node coordinate file.
• cube_4x4x4_elements.txt, the element file.

CUBE_5x5x5 is 125 nodes in the unit cube [0,4]x[0,4]x[0,4], defining 384 elements.

• cube_5x5x5_nodes.txt, the node coordinate file.
• cube_5x5x5_elements.txt, the element file.

P01_00063 is the 3x1x1 channel defined by 63 nodes and 144 elements.

• p01_00063_nodes.txt, the node coordinate file.
• p01_00063_elements.txt, the element file.
• p01_00063_neighbors.txt, the neighbor file.
• p01_00063.png, a PNG image of the mesh.

P01_00584 is the 3x1x1 channel defined by 584 nodes and 2482 elements.

• p01_00584_nodes.txt, the node coordinate file.
• p01_00584_elements.txt, the element file.
• p01_00584.png, a PNG image of the mesh.

P02_00588 is the vertical cylinder defined by 588 nodes and 2373 elements.

• p02_00588_nodes.txt, the node coordinate file.
• p02_00588_elements.txt, the element file.
• p02_00588.png, a PNG image of the mesh.

P03_00008 is the unit cube defined by 8 nodes and 6 elements.

• p03_00008_nodes.txt, the node coordinate file.
• p03_00008_elements.txt, the element file.
• p03_00008.png, a PNG image of the mesh.

P03_00224 is the unit cube defined by 224 nodes and 798 elements.

• p03_00224_nodes.txt, the node coordinate file.
• p03_00224_elements.txt, the element file.
• p03_00224.png, a PNG image of the mesh.

P04_00587 is the unit sphere defined by 587 nodes and 2775 elements.

• p04_00587_nodes.txt, the node coordinate file.
• p04_00587_elements.txt, the element file.
• p04_00587.png, a PNG image of the mesh.

P05_01084 is the cylinder with a spherical hole defined by 1084 nodes and 4738 elements.

• p05_01084_nodes.txt, the node coordinate file.
• p05_01084_elements.txt, the element file.
• p05_01084.png, a PNG image of the mesh.

TETRA_REFERENCE is a mesh of a single element, the reference tetrahedron, with vertices (1,0,0), (0,1,0), (0,0,1) and (0,0,0).

• tetra_reference_nodes.txt, the node coordinate file.
• tetra_reference_elements.txt, the element file.

TETRA_REFERENCE_REFINED is a mesh created by refining TETRA_REFERENCE into 8 subtetrahedrons of equal volume. The program TET_MESH_REFINE was used to carry this out.

• tetra_reference_refined_nodes.txt, the node coordinate file.
• tetra_reference_refined_elements.txt, the element file.

TETRA_RHOMBIC is the 4 vertices of a tetrahedron, plus the 10 midside points, making a mesh of 8 elements of order 4. This tetrahedron has some nice properties under a subdivision algorithm.

• tetra_rhombic_nodes.txt, the node coordinate file.
• tetra_rhombic_elements.txt, the element file.
• tetra_rhombic.png, a PNG image of the mesh.

TWENTY is 20 random nodes, defining 70 elements.

• twenty_nodes.txt, the node coordinate file.
• twenty_elements.txt, the element file.
• twenty.png, a PNG image of the mesh.

You can go up one level to the DATASETS directory.