Menu

Discussion Forum

New Discussion
Filtrer

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Can I use 2D boundary condition?

Posted 31 oct. 2012, 16:48 UTC−4 Chemical Reaction Engineering, Parameters, Variables, & Functions Version 4.2a 4 Replies

Xiaonan Shan
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi,

I am trying to simulate the concentration distribution of reaction with known boundary condition. If I know the concentration on the each spot or pixel of boundary at any time, how can I pass the boundary to the COMSOL simulator? Which means my concentration distribution on boundary is not uniform, I cannot apply a single value to the boundary. Is this possible?

Thank you very much for your help.
4 Replies Last Post 1 nov. 2012, 19:50 UTC−4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 1 nov. 2012, 02:54 UTC−4
Hi

COMSOL accepts for most BC full expressions, not only a number, so you can use spatial or time, or frequency or other dependencies (T,p, B ...) distributed over the boundary

--
Good luck
Ivar
Hi COMSOL accepts for most BC full expressions, not only a number, so you can use spatial or time, or frequency or other dependencies (T,p, B ...) distributed over the boundary -- Good luck Ivar
Xiaonan Shan
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 1 nov. 2012, 03:31 UTC−4
Hi Ivar:

Thank you very much for the help.

If I know the boundary condition, for example the concentration on the boundary at any location and any time: c(x,y,t), but this boundary condition is not written by an equation, it is just a matrix data from experiment. Could I still use COMSOL to simulation? Is there a related chapter in the user manual I can read?

Thank you again!

Xiaonan
Hi Ivar: Thank you very much for the help. If I know the boundary condition, for example the concentration on the boundary at any location and any time: c(x,y,t), but this boundary condition is not written by an equation, it is just a matrix data from experiment. Could I still use COMSOL to simulation? Is there a related chapter in the user manual I can read? Thank you again! Xiaonan
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 1 nov. 2012, 15:42 UTC−4
Hi

Then you create an interpolation function from your data and you apply tha on the BC.

Or you apply a given material property and ask COMSOL to adjust some depedent variable such that you respect your boundary condition, all depends for what you are looking for

--
Good luck
Ivar
Hi Then you create an interpolation function from your data and you apply tha on the BC. Or you apply a given material property and ask COMSOL to adjust some depedent variable such that you respect your boundary condition, all depends for what you are looking for -- Good luck Ivar
Xiaonan Shan
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 1 nov. 2012, 19:50 UTC−4
Hi Ivar:

Thank you for our help, I will try it first.

Best regards,

Xiaonan
Hi Ivar: Thank you for our help, I will try it first. Best regards, Xiaonan

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content