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Importing tetrahedral meshes
Posted 2016年11月1日 GMT-4 12:50 Mesh, Modeling Tools & Definitions Version 5.1 2 Replies
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I'm working on a barycentric mesh refinement code in MATLAB of triangular and tetrahedral COMSOL meshes. The code works perfectly for the 2-d case, just the 3-d case has a big problem: when I try and import the refined mesh (provided as a .mphtxt file) I get following error message:
Failed to enrich mesh:
- Detail: Two elements connect to the same side of the shared element face.
After playing around with some minimal tetrahedral meshes created with COMSOL, I have discovered, that the problem seems to be the order in which nodes that make up an element are given in the .mphtxt file in the section #Elements (e.g. 0 3 1 4; 0 4 1 2). Unfortunately, I have not been able to discover the pattern, the ordering of the nodes that make up an element follows.
Does any one know, how I have to order the four nodes that make up a tetrahedron, so that COMSOL loads the refined mesh?
Failed to enrich mesh:
- Detail: Two elements connect to the same side of the shared element face.
After playing around with some minimal tetrahedral meshes created with COMSOL, I have discovered, that the problem seems to be the order in which nodes that make up an element are given in the .mphtxt file in the section #Elements (e.g. 0 3 1 4; 0 4 1 2). Unfortunately, I have not been able to discover the pattern, the ordering of the nodes that make up an element follows.
Does any one know, how I have to order the four nodes that make up a tetrahedron, so that COMSOL loads the refined mesh?
2 Replies Last Post 2016年11月19日 GMT-5 08:36
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Posted:
8 years ago
See the documentation: Programming Reference Manual > Mesh > Getting and Setting Mesh Data > Element Numbering Conventions.
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Posted:
8 years ago
Thank you! So all the elements have to follow the same orientation for COMSOL to import the mesh.