chtMultiRegionFoam, conduction with a contact resistance between two solids

romain.h · September 16, 2012, 18:45

Hello,
I have a simple test case with 3 solid, and I am trying to solve a simple heat conduction inside those three solids. The third solid should not have any influence for now (see figure)

If I use

Code:

type            compressible::turbulentTemperatureCoupledBaffleMixed;
        value           uniform 300;
        neighbourFieldName T;
        K               solidThermo;
        KName           none;

as in the tutorial, it's working, I have a gradient of DT=q*Rth.

My problem is to introduce an additional resistance, for example a contact resistance between two solids.
I was planning on using the boundary condition fixedGradient, but I have an error when I tried to use such a boundary condition between two solids.

Code:

Attempt to cast type fixedGradient to type compressible::turbulentTemperatureCoupledBaffleMixed

Any idea how I can solve my problem ?

Thanks in advance for your help,
Romain

pangelo · October 8, 2013, 02:25

Hi,
I am a newbie in OF and I am also facing a problem similar to the one Romain posted.
My question: is it possible to set a contact resistance between two solids? (I am using the chtMultiRegionSimpleFoam solver).
Thank you in advance for your answer.

Ciao.

September 16, 2012, 18:45	chtMultiRegionFoam, conduction with a contact resistance between two solids	#1
romain.h New Member Romain Join Date: Aug 2012 Posts: 12 Rep Power: 14	Hello, I have a simple test case with 3 solid, and I am trying to solve a simple heat conduction inside those three solids. The third solid should not have any influence for now (see figure) If I use Code: type compressible::turbulentTemperatureCoupledBaffleMixed; value uniform 300; neighbourFieldName T; K solidThermo; KName none; as in the tutorial, it's working, I have a gradient of DT=q*Rth. My problem is to introduce an additional resistance, for example a contact resistance between two solids. I was planning on using the boundary condition fixedGradient, but I have an error when I tried to use such a boundary condition between two solids. Code: Attempt to cast type fixedGradient to type compressible::turbulentTemperatureCoupledBaffleMixed Any idea how I can solve my problem ? Thanks in advance for your help, Romain

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October 8, 2013, 02:25		#2
pangelo New Member Join Date: Sep 2013 Posts: 3 Rep Power: 13	Hi, I am a newbie in OF and I am also facing a problem similar to the one Romain posted. My question: is it possible to set a contact resistance between two solids? (I am using the chtMultiRegionSimpleFoam solver). Thank you in advance for your answer. Ciao.