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Time Dependent Boundary Condition...

Posted Feb 28, 2010, 11:53 p.m. EST 3 Replies

Edwin Insuasty
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Hi...I'm working with the Heat Transfer Module, and I need to implement a time varying boundary condition (The temperature in one wall changes in time). I have experimental data of the temperature (boundary condition) in form of an array, and of course and array of time (sample time).

Can I implement a time dependent boundary condition in a form of array (Temperature vs Time)???

Edwin
3 Replies Last Post May 26, 2011, 3:55 a.m. EDT
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Hello Edwin Insuasty

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Jorge Arturo Soto Puente
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Posted: 1 decade ago Apr 28, 2010, 4:20 p.m. EDT
Hi Edwin, i'm working with the crystallization of polyethylene.
The growthvelocity in one of the boundaries changes with the temperature.
The temperature is a time dependent condition because the polymer is cooling.
Could you help me to change the T as a function of the time.

Thanks a lot

Jorge SOTO
Hi Edwin, i'm working with the crystallization of polyethylene. The growthvelocity in one of the boundaries changes with the temperature. The temperature is a time dependent condition because the polymer is cooling. Could you help me to change the T as a function of the time. Thanks a lot Jorge SOTO
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Apr 29, 2010, 2:15 a.m. EDT
Hi

for me you shold be able to replace any cnstatn value by a function be it analytical (time dependent) or piecevise developed based on data points.

Try it out on a very simple case in th to convince yourself

Have fun Comsoling
Ivar
Hi for me you shold be able to replace any cnstatn value by a function be it analytical (time dependent) or piecevise developed based on data points. Try it out on a very simple case in th to convince yourself Have fun Comsoling Ivar
Gábor Járvás
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Posted: 1 decade ago May 26, 2011, 3:55 a.m. EDT
Hi Boys,

let's check it out:

courses.cit.cornell.edu/bee4530/miniexamples/timevary_comsol.pdf

Gabor
Hi Boys, let's check it out: courses.cit.cornell.edu/bee4530/miniexamples/timevary_comsol.pdf Gabor

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