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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Mesh working up until the point I want to do a study...

Posted 2015年3月23日 GMT-4 10:00 Geometry, Mesh Version 4.4 0 Replies

Matthew Aldous
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I am looking at the capacitance of a relatively simple geometry. I had the model working perfectly when I was interested in the variation in capacitance as two parallel plates sweep past each other, but when I try to add in an angular offset now nothing is working any more.

If I click "Build All" on the Mesh 1 node in the Model Builder, everything meshes just fine with no warnings or errors, but as soon as I click "Evaluate", all hell breaks loose. The mesher tells me that some faces are too small and that it has "Internal error in boundary respecting" and that it "Failed to respect boundary element edge on geometry face."

Looking more closely (at the attached .png files) I see that if I mesh manually everything is fine, but when the solver sets everything up for the start of the sweep run, it introduces an additional offset which I do not want. Zooming in, this results in an overlap of two domains and I guess this is what's causing the small edges and boundary respect failures.

Does anyone know what's causing this weird effect, and what I can do to fix it? Thanks,

Matthew

0 Replies Last Post 2015年3月23日 GMT-4 10:00
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Hello Matthew Aldous

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