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Time Dependent Subdomain and Boundaries

Posted Aug 27, 2009, 12:35 p.m. EDT 2 Replies

Alderson Neira
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I am trying to solve an array of layer depositions and I need information about the possibility for Comsol to activate subdomains and deactivate them for an specific period of time. This according to a moving heat sorce that changes in time and space.

The same happens with the boundary conditions is there a way to change it depending on time?

Is there a way to solve this with out the necesity to solve layer by layer manually?

Regards

Alderson

Mode: Heat Transfer Module
Transient Analysis


2 Replies Last Post Aug 28, 2009, 2:07 p.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 2 decades ago Aug 28, 2009, 1:23 a.m. EDT
Hi
I would have tried either with a script, by turning "on" the layers in a for loop, or something similar, or perhaps you can manage in the GUI approach by nulling the unwanted heat (and strucrural ?) properties of your layers with a *(t>t_n) or better a smoothened heaviside function to avoid the abrupt "turn on" (run a heaviside indexed search on your pdf docs for mre info on them).

Good luck
Ivar
Hi I would have tried either with a script, by turning "on" the layers in a for loop, or something similar, or perhaps you can manage in the GUI approach by nulling the unwanted heat (and strucrural ?) properties of your layers with a *(t>t_n) or better a smoothened heaviside function to avoid the abrupt "turn on" (run a heaviside indexed search on your pdf docs for mre info on them). Good luck Ivar
Alderson Neira
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Posted: 2 decades ago Aug 28, 2009, 2:07 p.m. EDT
Thanks a lot Ivar, i'll try and keep you posted.

Alderson
Thanks a lot Ivar, i'll try and keep you posted. Alderson

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