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How to solve and verify a ODE equation?

Posted Apr 25, 2013, 1:17 a.m. EDT Version 4.3a 5 Replies

Yu Jung Lee
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How to solve a ODE equation with mathematical problem?
And how can I verify the result correct with the mathematical answer?
Thanks for help.

Attachments:

5 Replies Last Post Jun 15, 2013, 6:50 p.m. EDT
Jens Krause
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Posted: 1 decade ago Apr 29, 2013, 3:08 a.m. EDT
Hi,

simply by making and ODE-node and entering the equation,....

See attached model.

Regards

Jens

PS:
but you owe me a beer for this.
Hi, simply by making and ODE-node and entering the equation,.... See attached model. Regards Jens PS: but you owe me a beer for this.

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Yu Jung Lee
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Posted: 1 decade ago Apr 29, 2013, 12:31 p.m. EDT
Dear Jens:
Thank you very much~!
You help me a lot.
I will study the model and simulate it again.
Thanks again~

PS:
No problem~haha
Dear Jens: Thank you very much~! You help me a lot. I will study the model and simulate it again. Thanks again~ PS: No problem~haha
Jânio Anselmo Engenharia Biomédica
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Posted: 1 decade ago Jun 7, 2013, 9:26 p.m. EDT
Hi Jens,
His response was also important to me. However, I need to make functions that vary in position and in time (attached)! shall ye make help me please? Therefore tried to declare functions and also no success.
Thank you.

Jânio Anselmo.
Hi Jens, His response was also important to me. However, I need to make functions that vary in position and in time (attached)! shall ye make help me please? Therefore tried to declare functions and also no success. Thank you. Jânio Anselmo.

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Magnus Ringh COMSOL Employee

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Posted: 1 decade ago Jun 10, 2013, 3:25 a.m. EDT
Hi,

It seems that you should be able to use a Domain ODEs and DAEs user interface for specifying a "distributed ODE", where the right-hand side can depend on the spatial coordinates in the domain.

Best regards,
Magnus Ringh, COMSOL
Hi, It seems that you should be able to use a Domain ODEs and DAEs user interface for specifying a "distributed ODE", where the right-hand side can depend on the spatial coordinates in the domain. Best regards, Magnus Ringh, COMSOL
Jânio Anselmo Engenharia Biomédica
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Posted: 1 decade ago Jun 15, 2013, 6:50 p.m. EDT
Hi Mr. Magnus.
Firstly thanks for your reply! I'll be performing your second statement! Warning on new questions!
Thank you.

Best regards,
Jânio Anselmo
Hi Mr. Magnus. Firstly thanks for your reply! I'll be performing your second statement! Warning on new questions! Thank you. Best regards, Jânio Anselmo

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