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symmetryPlane slows down computation

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Old   February 11, 2020, 16:01
Default symmetryPlane slows down computation
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Josh McCraney
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Hi FOAMers!

I am simulating a case in interFoam, where I create the mesh via snappyHexMesh. Rather than create the entire geometry, I create half, closing it with a wall (all stl files from solid works). When I impose symmetryPlane on this wall, the simulation runs so much slower than if I model the entire geometry and do not exploit symmetry.

Can anyone help? I'm happy to post any info that you ask for, but currently am completely clueless as to why the simulation is taking so long.
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Old   February 11, 2020, 16:27
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is it possible for you to attach a test case? difficult to judge otherwise.
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Old   February 11, 2020, 16:40
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Absolutely. You can download the entire zip file is here.

From there, to run the case, simply navigate into the "case" directory and execute
>> sh reRunSim.sh

The stl files are located in the "geometry" directory. snappyHexMesh is performed in the "mesh" directory. To run snappy (takes 90 seconds), navigate into the "mesh" directory and execute

>> sh runMesh.sh

Let me know if you see anything glaringly wrong. I appreciate your time!

EDIT: I just ran this same case, but instead of symmetryPlane, I used type patch, and had the conditions identical to that of the tank patch. It still goes slow. Then the issue isn't the symmetryPlane, but something else. Any idea if this is a solidWorks issue or a snappyHexMesh issue?
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Old   February 20, 2020, 14:37
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Quote:
Originally Posted by HPE View Post
is it possible for you to attach a test case? difficult to judge otherwise.
Hi HPE, have you been able to check out my case and see what the issue is regarding the meshing and slow computational time?
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