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Variable material properties

Posted Nov 21, 2011, 9:49 a.m. EST Heat Transfer & Phase Change Version 4.2 3 Replies

Bert Enernie
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Is it possible to make my material properties temperature dependend? I'm talking about a Cp value for example. Also do I have a MATLAB license, so if that has to be incoorporated; that's not a problem. Thanks in advance.
3 Replies Last Post May 23, 2012, 12:54 a.m. EDT
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago Nov 21, 2011, 9:57 a.m. EST
Hi

most material properties of the material library are Temperature and often pressure dependent. Add n interpolated function in your material, load a csv value (or use an analytical function) and define your Cp like that

Most entries in COMSOL accept functions or operators

--
Good luck
Ivar
Hi most material properties of the material library are Temperature and often pressure dependent. Add n interpolated function in your material, load a csv value (or use an analytical function) and define your Cp like that Most entries in COMSOL accept functions or operators -- Good luck Ivar
Andrew Gross
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Posted: 1 decade ago May 22, 2012, 6:59 p.m. EDT
Hi,

I am VERY new to COMSOL. How and where can I include an interpolated function to a material property from a CSV file?

Thanks!
Hi, I am VERY new to COMSOL. How and where can I include an interpolated function to a material property from a CSV file? Thanks!
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago May 23, 2012, 12:54 a.m. EDT
Hi

the best is to look at the models in the model library, there are many things to learn and to get used to in COMSOL, but it's extremely powerfull.

You should look at the materials in the material library, some of them are dependent on T or p pr ... and copy this approach.

You can load your csv file into an interpolation function that you define under Definition node, right-click Functions ...

--
Good luck
Ivar
Hi the best is to look at the models in the model library, there are many things to learn and to get used to in COMSOL, but it's extremely powerfull. You should look at the materials in the material library, some of them are dependent on T or p pr ... and copy this approach. You can load your csv file into an interpolation function that you define under Definition node, right-click Functions ... -- Good luck Ivar

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