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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 The information provided may be out of date.

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Defining material properties

Posted 2011年3月9日 GMT-5 09:44 Materials Version 3.5a 2 Replies

Atilla Savas
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Hi Everybody,

How can I define the following thermal conductivity in COMSOL 3.5a

k=10+0.0014*T if T<780
k=12+0.0013*T if 780<T< 1672
k=210-0.1*T if 1672<T<1727
k=8 +0.01*T if 1727<T

Is it possible to give conditional material properties?

If someone helps me, I will appreciate it a lot..

Thanks.

2 Replies Last Post 2011年3月9日 GMT-5 12:14
Xiaogai Li
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Posted: 1 decade ago 2011年3月9日 GMT-5 10:34
Write it into logical expression should work?

k=(10+0.0014*T)*(T<780)+(12+0.0013*T)*(T>780&&T<1672)+(210-0.1*T)*(T>1672&&T<1727)+(8 +0.01*T)*(T>1727)
Write it into logical expression should work? k=(10+0.0014*T)*(T780&&T1672&&T1727)
Atilla Savas
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Posted: 1 decade ago 2011年3月9日 GMT-5 12:14
Thank you,

I will try the logical expressions.

Thank you, I will try the logical expressions.

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