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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 The information provided may be out of date.

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anyone expert in pde and ode....

Posted 15.09.2011, 08:05 GMT-4 Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers Version 4.2 4 Replies

Richa Kumari
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pls check why is it giving an error i have tried 1000 times also i have posted many times in the forum but no one replies to it ...i dnt knw y??? if possible pls take up this challenge or atleast gv sm positive feedback....


thanking u in anticipation..

Attachments:

4 Replies Last Post 18.09.2011, 10:37 GMT-4
Nils Eivind Kamfjord
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Posted: 1 decade ago 15.09.2011, 16:57 GMT-4

pls check why is it giving an error i have tried 1000 times also i have posted many times in the forum but no one replies to it ...i dnt knw y??? if possible pls take up this challenge or atleast gv sm positive feedback....


thanking u in anticipation..


Hi
No expert on either but a quick search in the forum on the error message leads to several threads that could be worth reading.
Maybe a sweep to ramp up BC could do the trick ?

Nils Eivind
[QUOTE] pls check why is it giving an error i have tried 1000 times also i have posted many times in the forum but no one replies to it ...i dnt knw y??? if possible pls take up this challenge or atleast gv sm positive feedback.... thanking u in anticipation.. [/QUOTE] Hi No expert on either but a quick search in the forum on the error message leads to several threads that could be worth reading. Maybe a sweep to ramp up BC could do the trick ? Nils Eivind
Joke Lee
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Posted: 1 decade ago 17.09.2011, 19:54 GMT-4
(I changed the answer)
(I changed the answer)
Lechoslaw Krolikowski
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Posted: 1 decade ago 18.09.2011, 10:03 GMT-4
Hi,

I've reviewed your attached files and have the following comments.
In the ODEs there exists a variable V, which depends on the spatial coordinate x. Therefore the ODEs are the so-called distributed ODEs. You should use Distributed ODEs and DAEs node instead of Global ODEs and DAEs. This node does not exist in Comsol 4.0a. You need Comsol 4.2.

Best regards,
Andrzej
Hi, I've reviewed your attached files and have the following comments. In the ODEs there exists a variable V, which depends on the spatial coordinate x. Therefore the ODEs are the so-called distributed ODEs. You should use Distributed ODEs and DAEs node instead of Global ODEs and DAEs. This node does not exist in Comsol 4.0a. You need Comsol 4.2. Best regards, Andrzej
Richa Kumari
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Posted: 1 decade ago 18.09.2011, 10:37 GMT-4
thank you andrez i will try it....
thank you andrez i will try it....

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