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How to set a temperatur dependent Heat source

Posted 3 feb 2016, 15:54 GMT-5 Heat Transfer & Phase Change Version 4.4 0 Replies

Zhuo Xia
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Dear Comsol experts,

i am modeling the Temperatur Distribution of a exotherm intermetallic reaction(SHS reaction between Al-Ni).
The reactions start from the Temperatur 900K and lasts just for 1ms.
I have tried using function in Heat source term but it doesnt work.
Q [W/m^3]*an1(T)
an1(T)=0*(T<900)+1*(T>=900)*(T<1600)+0*(T>=1600)

There is an Ignition Energie at one place so that the Temperatur somewhere can be over 900K.
However the results of Simulation turns out just like there is no Q at all, just the activation works.


I am grateful if someone know how to make the Temperatur dependent Heat source of Heat Flux

Thanks!
Xia

0 Replies Last Post 3 feb 2016, 15:54 GMT-5
COMSOL Moderator

Hello Zhuo Xia

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