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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 The information provided may be out of date.

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Finalizing a geometry and boolean operations

Posted 2013年4月24日 GMT-4 15:51 Geometry Version 4.3a 1 Reply

Kaushik Biswas
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I have a fairly basic question. After creating a geometry, what is benefit of forming an Union or an Assembly? I have been solving some preliminary models without forming an union/assembly. I have looked at the documentation to understand the purpose behind the union operation, but couldn't find any satisfactory explanation.

Thanks in advance,
Kaushik
1 Reply Last Post 2013年4月25日 GMT-4 03:06
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2013年4月25日 GMT-4 03:06
Hi

check the forum it has been discussed several times.

My way is "use the defaults" in this case Union which means that all domains having adjacent boundaries have single adjacent boundaries, and COMSOl assumes flux conservation across the boundaries. this, I would say is typically the default for 80-90% of all models

Assembly, means you need to knit all adjacent boundaries together, and that you must copy mesh densities on adjacent, overlapping boundaries

--
Good luck
Ivar
Hi check the forum it has been discussed several times. My way is "use the defaults" in this case Union which means that all domains having adjacent boundaries have single adjacent boundaries, and COMSOl assumes flux conservation across the boundaries. this, I would say is typically the default for 80-90% of all models Assembly, means you need to knit all adjacent boundaries together, and that you must copy mesh densities on adjacent, overlapping boundaries -- Good luck Ivar

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