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Bidirectional coupling of "Conductive media DC" with " Heat Transfer by conduction"

Posted Jul 5, 2014, 7:11 p.m. EDT Low-Frequency Electromagnetics, Heat Transfer & Phase Change 7 Replies

Soumitra Biswas
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Hi

I am coupling "conductive media dc" to "heat transfer with conduction" to see the effect of electrical conductivity due to thermal heating and vice versa.

In the "heat transfer with conduction" mode, I have used the resistive heating "Q_dc" as Heat source value.
My question is that, for bidirectional coupling, should I use any related value of heat transfer to the current source tab in "conductive media dc" mode. Here, I am using the anisotropic conductivity.

For seeing the heat transfer effect on anisotropic conductivity, should there be any temperature dependent formula be used or the formula is already integrated in the software and it will calculate the change of conductivity automatically.

Could you anyone please let me know the answer. If there is any ambiguity in understanding the question, please let me know.


Thanks







7 Replies Last Post Jul 17, 2014, 3:29 a.m. EDT
Pieter Westerik
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Posted: 1 decade ago Jul 7, 2014, 10:20 a.m. EDT
Are you using conductivity 'from material' or 'user defined'? In the first case you have to check if the material property is given temperature dependent. In the later case you have to specify the temperature dependency yourself anyway.
Are you using conductivity 'from material' or 'user defined'? In the first case you have to check if the material property is given temperature dependent. In the later case you have to specify the temperature dependency yourself anyway.
Soumitra Biswas
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Posted: 1 decade ago Jul 7, 2014, 10:45 a.m. EDT
I am using "user defined" conductivity and it is temperature dependent.
I am using "user defined" conductivity and it is temperature dependent.
Pieter Westerik
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Posted: 1 decade ago Jul 8, 2014, 2:42 a.m. EDT
So you already have a temperature dependent expression for the temperature dependent material properties? That should be enough right? Or is there an other problem?
So you already have a temperature dependent expression for the temperature dependent material properties? That should be enough right? Or is there an other problem?
Soumitra Biswas
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Posted: 1 decade ago Jul 8, 2014, 12:04 p.m. EDT
Hi

I have a temperature dependent expression for my material. But the problem is that, now I want to see the temperature vs conductivity graph. I mean, how the conductivity varies with increasing temperature. But I can't figure out how to get this graph. Because, ultimately, this will be my output.


Thanks
Hi I have a temperature dependent expression for my material. But the problem is that, now I want to see the temperature vs conductivity graph. I mean, how the conductivity varies with increasing temperature. But I can't figure out how to get this graph. Because, ultimately, this will be my output. Thanks
Pieter Westerik
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Posted: 1 decade ago Jul 9, 2014, 4:06 a.m. EDT
Can you maybe upload your model? Maybe that will help me better understand you.
Can you maybe upload your model? Maybe that will help me better understand you.
Soumitra Biswas
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Posted: 1 decade ago Jul 16, 2014, 4:34 p.m. EDT
Hi

I couldn't attache the .fl file. Here, I attached the model file.

Could you please get any idea from model file. If you have any problem in understanding, please let me know.


Thanks
Hi I couldn't attache the .fl file. Here, I attached the model file. Could you please get any idea from model file. If you have any problem in understanding, please let me know. Thanks

Attachments:

Pieter Westerik
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Posted: 1 decade ago Jul 17, 2014, 3:29 a.m. EDT
Oh sorry I do not know about FEMLAB or Matlab livelink.
Oh sorry I do not know about FEMLAB or Matlab livelink.

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