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Error in symmetry
Posted Sep 11, 2020, 3:14 a.m. EDT 1 Reply
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Hello,
I am modeling a spherical Helmholtz resonator on Comsol so I can find the resonance frequency by changing some parameters. I am using the acoustic module. To simplify my model, I used the quarter of the sphere (because of symmetry). Then in the physics part I added symmetry and chose the specific boundaries. In this case the resonance frequency changed in a range of 10 Hz. It is not the same anymore. What can I do in this case? I can't find my error!
Thank you in advance
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Hello,
Is 10 Hz a large variation? If it is small, could it be due to the fact that the mesh is different? In that case, refining the meshes in both cases could reduce the discrepency.