Conservative interface flux

Nurzhan · January 11, 2015, 21:58

Hello!

I am using the domain interface to connect two solid domains. I chose the conservative interface flux and set thermal contact resistance to zero.

Will it be right to say, that at the interface heat is described as follows: $-k\frac{\partial T}{\partial x} = k\frac{\partial T}{\partial x}$ (the left side of the equation represents the first solid, and the right side represents the second), if heat conducts in X direction?

Any help is appreciated.

Regards,
Nurzhan

Opaque · January 12, 2015, 09:29

At the interface the heat flux normal to the interface is conserved; therefore, you must project the heat flux vector along the normal direction.

$\left. -k\frac{\partial T}{\partial n} \right|_{Side 1}= \left. -k\frac{\partial T}{\partial n} \right|_{Side 2}$

Nurzhan · January 12, 2015, 14:02

Quote:

Originally Posted by Opaque

At the interface the heat flux normal to the interface is conserved; therefore, you must project the heat flux vector along the normal direction.

Dear Opaque,

could you please rewrite your equations as they are not appearing in the response.

Thanks.

January 11, 2015, 21:58	Conservative interface flux	#1
Nurzhan Member Nurzhan Join Date: Jan 2014 Posts: 56 Rep Power: 12	Hello! I am using the domain interface to connect two solid domains. I chose the conservative interface flux and set thermal contact resistance to zero. Will it be right to say, that at the interface heat is described as follows: $-k\frac{\partial T}{\partial x} = k\frac{\partial T}{\partial x}$ (the left side of the equation represents the first solid, and the right side represents the second), if heat conducts in X direction? Any help is appreciated. Regards, Nurzhan

January 12, 2015, 09:29		#2
Opaque Senior Member Join Date: Jun 2009 Posts: 1,803 Rep Power: 32	At the interface the heat flux normal to the interface is conserved; therefore, you must project the heat flux vector along the normal direction. $\left. -k\frac{\partial T}{\partial n} \right\|_{Side 1}= \left. -k\frac{\partial T}{\partial n} \right\|_{Side 2}$ Nurzhan and Goenitz like this. Last edited by Opaque; January 12, 2015 at 17:34.

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