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 The information provided may be out of date.

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Can I use 2D boundary condition?

Posted 2012年10月31日 GMT-4 16:48 Chemical Reaction Engineering, Parameters, Variables, & Functions Version 4.2a 4 Replies

Xiaonan Shan
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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 2012年11月1日 GMT-4 19:50
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年11月1日 GMT-4 02:54
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
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Posted: 1 decade ago 2012年11月1日 GMT-4 03:31
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)
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Posted: 1 decade ago 2012年11月1日 GMT-4 15:42
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
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Posted: 1 decade ago 2012年11月1日 GMT-4 19:50
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

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