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Problem with defining subdomain expressions

Posted May 23, 2018, 10:14 a.m. EDT Electromagnetics, General, Parameters, Variables, & Functions Version 5.3a 4 Replies

Mateusz Malewski
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Hi!

I am working on the project where I am trying to revive old simulations done in Comsol 3. Unfortunetely, some features of the program are very different now. The problem I am currently facing in that in the old version it was possible to define expressions which were directly assigned to the specific domain (please check the attachement) - subdomain expressions, but according to my best knowledge it is not possible in Comsol 5.3. Is there any way to do it in the same manner? Can you suggest any other solution that I can apply?

Thank you for help in advance!

4 Replies Last Post May 24, 2018, 7:44 a.m. EDT
Sergei Yushanov Certified Consultant
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Posted: 7 years ago May 23, 2018, 11:18 a.m. EDT

Mateus,

You can use Component/Definition/Variables to assign subromain expressions, as shown in the attached image.

Regards,

Sergei

Mateus, You can use Component/Definition/Variables to assign subromain expressions, as shown in the attached image. Regards, Sergei
Mateusz Malewski
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Posted: 7 years ago May 23, 2018, 12:27 p.m. EDT
Updated: 7 years ago May 23, 2018, 2:10 p.m. EDT

Thanks!

Thanks!
Mateusz Malewski
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Posted: 7 years ago May 23, 2018, 2:09 p.m. EDT

Mateus,

You can use Component/Definition/Variables to assign subromain expressions, as shown in the attached image.

Regards,

Sergei

Thanks!

One more question though, do you have any idea how I can refer to the temperature of the domain in this expression? I would like to put in there the following equation: flc1hs(T-5,0.1), where T is the temperature of the selected domain.

Thank you in advance!

>Mateus, > >You can use Component/Definition/Variables to assign subromain expressions, as shown in the attached image. > >Regards, > >Sergei Thanks! One more question though, do you have any idea how I can refer to the temperature of the domain in this expression? I would like to put in there the following equation: flc1hs(T-5,0.1), where T is the temperature of the selected domain. Thank you in advance!
Sergei Yushanov Certified Consultant
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Posted: 7 years ago May 24, 2018, 7:44 a.m. EDT

Mateusz,

Not sure I understand yous question. If T is dependent variable you are solving for, then it is derectly available in any domain and you can define your variable at the selected domain as var1=flc1hs(T-5,0.1).

Regards,

Sergei

Mateusz, Not sure I understand yous question. If T is dependent variable you are solving for, then it is derectly available in any domain and you can define your variable at the selected domain as var1=flc1hs(T-5,0.1). Regards, Sergei

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