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Material Properties setting problems in AC/DC Module
Posted 16.03.2014, 12:19 GMT-4 Version 4.3 3 Replies
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I've created a simple 3D model in the AC/DC Module.
When I'm viewing the geometry using the select domain option I can view and select all of my 10 domains.
But when I go to assign materials to the domains, Comsol tells me that I only have 8 domains. For some reason the software seeing two separate domains as the same and is grouping them when I am trying to set the materials.
Does anyone know what causes this and how I can fix it?
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check the aspect ratio, if it is greater than 1e4 then comsol's kernel may have problems rendering the 3D image.
aspect ratio: the length of the longest edge divided by the shortest edge you can find in your geometry.
cheers,
Felipe BM
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Thank you for the information!
My aspect ratio is small (I am modeling a bio sensor (interdigital sensor)). Upon closer inspection of my drawing I found that the geometry for the conductive material was projecting into the dielectric material ever so slightly (app 1e-6m). When I redrew the geometry to remove the overlap the conflict disappeared and Comsol recognised the two distinct domains. I am now able to set my materials.
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cheers,
Felipe BM