Unstructured Grids (UG) is an add-on for Blender for creating, importing, editing and exporting of 3D volume meshes composed of arbitrary polyhedron cells (a.k.a 3D unstructured grids). The motivation for this work was the lack of open source volume mesh editors. There are numerous finite volume mesh generators, but practically no general or visual editors.
Add-on handles mesh topology and geometry (the definition of cells). Field data (cell data or point data) for the mesh is disregarded. Editing includes tasks like moving of selected vertices, deletion of existing cells, extrusion of new cells, and assignation of selected faces and cells to named boundaries and zones. The user of the add-on is assumed to know Blender modelling and material systems on a basic level.
The add-on has been tested with Blender 3.6 LTS version and OpenFOAM Foundation version 10 of OpenFOAM.
Documentation (made using Sphinx) is located in docs directory of the sources and is viewable online at https://unstructured-grids.readthedocs.io.
Please use Github issues for bug reporting. There is also a discussion thread on CFD Online and another one on VTK discourse forum.
If you use this add-on, please star the project in GitHub!
This offering is not approved or endorsed by OpenCFD Limited, producer and distributor of the OpenFOAM software via www.openfoam.com, and owner of the OPENFOAM® and OpenCFD® trade marks.