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Geometry processing error using O-mesh

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Old   October 11, 2022, 03:39
Default Geometry processing error using O-mesh
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Shuang Qiu
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Hi all,

I tried to simulate a supersonic cylinder problem with an O-mesh generated in Gmsh. When start simulating the geometry processing gives the message "0 interior elements before parallel partitioning" and quit from simulation. Attached is my Gmsh script and my config file, and a screenshot of my mesh. Can anyone help me with this?
Attached Images
File Type: jpg mesh screenshot.jpg (124.1 KB, 10 views)
Attached Files
File Type: zip config file and gmsh script.zip (4.5 KB, 2 views)
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Old   October 11, 2022, 19:41
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Brandon Gleeson
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Hi Shijian-20,

Maybe try to compound the two halves of your grid by issuing the "Mesh" →
"Define" → "Compound" → "Surface" command in the GUI, or add this line to your *.geo file:

//+
Compound Surface {1, 2};

I'm just curious as to the reason for running the FEM solver for this problem? I'm not sure what the grid requirements are for that, but I'm curious if GMESH's 3rd order grid will work with that solver. Have you tried just running a 1st order grid with the FVM flow solver to make sure the basics of your problem setup are OK?

--Brandon--
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