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How to set a certain 3-D region to temperature const in a instant time range?

Posted Jul 22, 2016, 1:51 a.m. EDT Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD) Version 5.2a 3 Replies

Ren Zetian
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Hello,
I am using comsol to solve heat conduction problems. I want to set the temperature of a certain 3-D region to be constant. But I can only find a constant-temperature condition for boundaries, rather than 3-D regions. How can I achieve this,please? Thanks!
3 Replies Last Post Jul 25, 2016, 8:48 p.m. EDT
Sohan Birla
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Posted: 8 years ago Jul 22, 2016, 11:40 a.m. EDT
On internal boundary of domain selected zone boundary setting to constant temperature will take care. However there should not be any heat generation/removal in zone.
On internal boundary of domain selected zone boundary setting to constant temperature will take care. However there should not be any heat generation/removal in zone.
Henrik Sönnerlind COMSOL Employee

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Posted: 8 years ago Jul 22, 2016, 1:12 p.m. EDT
Hi,

I am not sure what you mean by 'zone', but if it is some kind of region which is not equal to a set of boundaries (or domains) you can find a discussion about how to apply such boundary conditions in this blog post:

www.comsol.com/blogs/how-to-make-boundary-conditions-conditional-in-your-simulation/

Regards,
Henrik
Hi, I am not sure what you mean by 'zone', but if it is some kind of region which is not equal to a set of boundaries (or domains) you can find a discussion about how to apply such boundary conditions in this blog post: https://www.comsol.com/blogs/how-to-make-boundary-conditions-conditional-in-your-simulation/ Regards, Henrik
Ren Zetian
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Posted: 8 years ago Jul 25, 2016, 8:48 p.m. EDT
Hi Henrik,

Thanks for your reply. In fact I want to set a certain 3-D region to constant temperature, rather than boundary condition. Is there any solution, please?

Thanks.

Ren
Hi Henrik, Thanks for your reply. In fact I want to set a certain 3-D region to constant temperature, rather than boundary condition. Is there any solution, please? Thanks. Ren

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