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modeling air gap in switched reluctance machine
Posted Nov 18, 2010, 6:57 p.m. EST 1 Reply
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Hi there,
I am doing a project on the above machine. I came across a paper saying that 'narrow airgap between stator and rotor poles results in a large gradient of the number of elements, when moving away from the airgap'.
I am wondering how can i make a dual ring in the air gap where one ring is modelled as fixed air and the other as rotating airgap? Is it possible to do so in COMSOL?
At the moment I just define the air gap as 1 subdomain.
Thank you in advance for any advices or feedbacks.
Cheers
I am doing a project on the above machine. I came across a paper saying that 'narrow airgap between stator and rotor poles results in a large gradient of the number of elements, when moving away from the airgap'.
I am wondering how can i make a dual ring in the air gap where one ring is modelled as fixed air and the other as rotating airgap? Is it possible to do so in COMSOL?
At the moment I just define the air gap as 1 subdomain.
Thank you in advance for any advices or feedbacks.
Cheers
1 Reply Last Post Nov 20, 2010, 8:13 a.m. EST
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Posted:
1 decade ago
Hi
It is rather important to have many mesh elements where the gradients are large, you can use the mesh "Resolution of narrow regions" variable in the meshing user settings to force COMSOL to use more than 1 mesh element for such "thin" airgaps. Ideally I would say you should have 5-10 elements but this might get your model mesh to explode
--
Good luck
Ivar
It is rather important to have many mesh elements where the gradients are large, you can use the mesh "Resolution of narrow regions" variable in the meshing user settings to force COMSOL to use more than 1 mesh element for such "thin" airgaps. Ideally I would say you should have 5-10 elements but this might get your model mesh to explode
--
Good luck
Ivar