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Joule heating in superconductor

Posted 7 déc. 2009, 01:15 UTC−5 2 Replies

Won Hee Sung
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Hi~

I have a problem in Joule heating in superconductor
The Superconductor's resistivity depend on Temperature and "current density" both!

rho = f(T,J)

how can i handle current density?
Is it available to use expression of current density to put in rho value?

please help me~
2 Replies Last Post 30 juil. 2010, 10:27 UTC−4
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Hello Won Hee Sung

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Luis Gomez
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Posted: 1 decade ago 16 juil. 2010, 21:50 UTC−4
Hi!,

It is extrange no one have responded to your question. I also have similar question, but I also want to add the magnetic field dependance, so rho = f(T,J,B)

Good luck!


Hi~

I have a problem in Joule heating in superconductor
The Superconductor's resistivity depend on Temperature and "current density" both!

rho = f(T,J)

how can i handle current density?
Is it available to use expression of current density to put in rho value?

please help me~


Hi!, It is extrange no one have responded to your question. I also have similar question, but I also want to add the magnetic field dependance, so rho = f(T,J,B) Good luck! [QUOTE] Hi~ I have a problem in Joule heating in superconductor The Superconductor's resistivity depend on Temperature and "current density" both! rho = f(T,J) how can i handle current density? Is it available to use expression of current density to put in rho value? please help me~ [/QUOTE]
Sven Friedel COMSOL Employee

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Posted: 1 decade ago 30 juil. 2010, 10:27 UTC−4
Hi,

this is sure possible with COMSOL. You can define functions of several arguments. The functions can be analytical where the number of arguments is practically not limited, but you can also define interpolation functions of at least 3 variables.

If you are using COMSOL 4.0a, please start Help > Documentation and seah for "Defining an Interpolation Function",
there spatial variables are given as an example but the function can be interpolated depending on a generic set of 3 input variables, e.g. T,J and B.


Best regards,
Sven
Hi, this is sure possible with COMSOL. You can define functions of several arguments. The functions can be analytical where the number of arguments is practically not limited, but you can also define interpolation functions of at least 3 variables. If you are using COMSOL 4.0a, please start Help > Documentation and seah for "Defining an Interpolation Function", there spatial variables are given as an example but the function can be interpolated depending on a generic set of 3 input variables, e.g. T,J and B. Best regards, Sven

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