Hello.
I’m simulating an airplane fuselage with different wing configurations in gross wind. I will compare the simulations with some real wind tunnel tests i have done on the same 3D printed models.
Everything worked for the first wing configuration, but when i tried the planar wing, the mesh just won’t generate. The first models with an annular wing took just 0.6 core hours to generate, but the same fuselage with an arguably simpler wing, used 1.75 core hours to generate 0%. I subsequently cancelled the operation. The models are all exported as a .step file from “Fusion 360”. I used the same settings for all the simulations and meshes are all 8 in fineness, as that worked fine for the fuselages with an annular wing.
Please help me, I have a deadline for the finals in a science compatition in 2 weeks, and I also need to rewrite my report with the results. I have no clue what is wrong. Do anyone have a solution to get simscale to generate the meshes? It would help a lot.
The URL: https://www.simscale.com/workbench/?pid=7318303683160174723&mi=spec%3Ace017f45-fe7c-43e1-b97f-6ace26db4cab%2Cservice%3AMESHING%2Cstrategy%3A38&sh=37
Hi,
If the mesh is “stuck” at 0% it means that the surface mesh is still being generated. On the CAD level, small faces and gaps require many additional cells to mesh, which is why sometimes you see dirty CAD models taking longer to finish the operation.
Some suggestions:
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The most robust way to go about this is by simply cleaning up the CAD model. I’m highlighting some super sharp corners and small faces below:
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You can also improve the situation by increasing the small feature suppression (which will be the minimum cell size possible) under advanced settings. But this may not fully resolve the issue for all cases and it may also take tests.
Cheers
Hello. Thanks for the reply
I just find it strange that it worked perfectly fine for the othe models, where the fuselage itself and the tail sections are the same models as the ones that worked, why can that be?
Since the meshing operation got canceled I cannot see the meshing log (to see how many cells you had, etc.), but it’s very possible that some regions of the domain for this version of the CAD were requiring more cells than other CAD versions (e.g. I see the wings are different, etc.).
