Thin Gap Meshing

snappyHexMesh, simpleFoam, mesh generation for internal flow, gap refinement

Different engineering designs contain small gaps, which are sometimes challenging to handle for the meshing procedure. SnappyHexMesh allows one to use different techniques to provide suitable refinements. One of these methods is described in this tutorial. For the refinement strategy, a separate triangulated surface file is used for the »regionRefinement« procedure. However, snappyHexMesh also allows the usage of a gap refinement keyword, which is not presented here. After the meshing, a steady-state solution is calculated. A total calculation time of around 10 minutes is required for ordinary computers.

There are many ways to reach the final mesh

Image: Velocity field inside the thin gap

Image: Detailled mesh view around the gap

Published under the GNU General Public License 3

Over the last ten years, Tobias tried to publish a wide range of different materials related to OpenFOAM® and CFD. You know it much better than he does if the content is worth to be supported. If you want to thank Tobias for the work he did, feel free to tell the community your opinion about the work Tobias Holzmann is doing or you can email your thoughts directly to »This email address is being protected from spambots. You need JavaScript enabled to view it.«. Keep in mind that the work that was done here took much time, and it is not self-evident that Tobias Holzmann shares all his work, knowledge, and attitude for free and keep the data up to date. Hosting the material, updating the data, and keeping up interesting work for the community does take much time and also money. Supporting Tobias is greatly welcomed and can be done easily by donating any amount you would like to give to support his projects shared on his website.

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The available OpenFOAM® training cases are tested and built for different OpenFOAM® versions (not distributions) on a Linux machine. During the tests, only the OpenFOAM Foundation version of OpenFOAM® was used. Furthermore, the following software packages are required for most of the training cases: Salome®, ParaView®, and for optimization tasks, one also needs the open-source software DAKOTA®. The OpenFOAM® cases might work with the ESI version of OpenFOAM® but it is not supported. For the OpenFOAM® extend project, the training cases will probably not work as the code diverged too much. Additionally, there is no support for Windows-based and MAC-based OpenFOAM® versions.

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— thinGapMeshing-4.tar.gz