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SnappyHexMesh GUI add-on for Blender

Introduction

This add-on turns Blender into a GUI for SnappyHexMesh, a volume mesh generation tool for OpenFOAM®, the open source CFD (computational fluid dynamics) toolbox. The add-on exports a complete OpenFOAM case folder structure, with geometry and dictionary files, ready to run OpenFOAM commands including snappyHexMesh. The aim of the add-on is to

  • Ease the workflow for importing, updating, modifying and exporting 3D surface meshes to OpenFOAM.
  • Allow definition of most common SnappyHexMesh settings via Blender GUI, to reduce need for manual modification of OpenFOAM dictionary definitions.
  • Require minimal Blender skills. Geometry can be modelled in any 3D modelling / CAD program which exports a surface mesh format that can be imported to Blender, such as STL or Wavefront OBJ.

The add-on generates OpenFOAM dictionary files for the surface mesh objects in Blender. Dictionary creation is based on string replacements using template files located in the add-on's skel directory. The add-on is meant to work on latest LTS version of Blender and latest stable OpenFOAM.com and OpenFOAM.org versions of OpenFOAM. Tested with Blender 4.2.

To learn to use SnappyHexMesh GUI, have a look at my video tutorial series Blender for OpenFOAM users.

Documentation

Documentation is located in docs directory of the sources and is viewable online at https://snappyhexmesh-gui.readthedocs.io. Please view the documentation for installation and usage instructions.

Feedback

If you use this add-on, please star the project in GitHub!

OpenFOAM Trade Mark Notice

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.

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