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From 3.5 to 4.1

Posted May 23, 2011, 10:19 a.m. EDT Version 4.1 3 Replies

Triantafyllos (Fyllos) Stylianopoulos
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Hello,

I cannot run my COMSOL 3.5 code using COMSOL 4.1.

I figured out the problem might be that in my 3.5 code I had to change some of the default variables of the equation system. I did these changes following the path: Physics -> Equation System -> Subdomain Settings -> Variables.

Comsol 4.1 does not seem to provide you with the option to modify the variables in the equation system. How can I do these changes so that my code to run again in COMSOL 4.1?

thank you,
Fyllos



3 Replies Last Post May 24, 2011, 1:36 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago May 23, 2011, 10:58 a.m. EDT
Hi

yes you can, but you must turn "on" the equation view in the "preferences"

My advice:
rebuild your model from scratch in V4, as even if importing 3.5 mostly works, but you will get crazy with the mix of variable names

--
Good luck
Ivar
Hi yes you can, but you must turn "on" the equation view in the "preferences" My advice: rebuild your model from scratch in V4, as even if importing 3.5 mostly works, but you will get crazy with the mix of variable names -- Good luck Ivar
Triantafyllos (Fyllos) Stylianopoulos
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Posted: 1 decade ago May 23, 2011, 2:23 p.m. EDT
Dear Ivar,

Thank you very much for your prompt response. Indeed I agree with you and try to build the model in COMSOL 4.1 from scratch.

Regarding my problem on viewing the equation system and modifying the variables, I have the "show equation view" box checked but I cannot see the equations.

Could you please let me know how I can actually see the equations and the variables as we could do with COMSOL 3.5 following the path I described you in the previous email?

Thank you very much in advance,

Fyllos
Dear Ivar, Thank you very much for your prompt response. Indeed I agree with you and try to build the model in COMSOL 4.1 from scratch. Regarding my problem on viewing the equation system and modifying the variables, I have the "show equation view" box checked but I cannot see the equations. Could you please let me know how I can actually see the equations and the variables as we could do with COMSOL 3.5 following the path I described you in the previous email? Thank you very much in advance, Fyllos
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago May 24, 2011, 1:36 a.m. EDT
Hi

the equations appear as the lowest level node in the model node tree

--
Good luck
Ivar
Hi the equations appear as the lowest level node in the model node tree -- Good luck Ivar

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