Heat Flux

Grimoli · May 30, 2013, 11:21

What should I do to impose a heat flux on a heat transfer case on OpenFoam??
Should I put it on the wall ''changeDictionaryDict" configurations??I tried to search it on OpenFoam tutorial but I had no sucess at all.Can someone help me please??
I'm doing a case where i have a wall being heated and i need to make a flux between that wall and a air(which surround the wall).Please help me

morard · May 31, 2013, 03:18

There is a wallHeatFlux boundary condition, http://openfoamwiki.net/index.php/Contrib_wallHeatFlux

or, you can use fixedGradient,

wall
{
type fixedGradient;
gradient uniform 1000;
}

Grimoli · June 3, 2013, 20:56

is there a way for using the wallheat flux for a chtmulti solver?

morard · June 4, 2013, 07:29

I've never used that solver, but it should be possible, I think...

Grimoli · June 4, 2013, 07:40

is there a way to change the buoyant solver to a cht multi region one??
that would be simpler for me instead of trying to do a flux between these 2 regions

Grimoli · June 4, 2013, 07:42

minZ
{
type compressible::turbulentHeatFluxTemperature;
heatSource flux;
q uniform 7.53;
value uniform 300;
}
}

i saw topics of people saying that i would have to use this,but when i tried to put this on the dictionary dict,the program doesnt run at all,it gives more erros than everything.What probably I'm doing wrong??

May 30, 2013, 11:21	Heat Flux	#1
Grimoli Member Gabriel de PInho RImoli Join Date: Mar 2013 Posts: 49 Rep Power: 13	What should I do to impose a heat flux on a heat transfer case on OpenFoam?? Should I put it on the wall ''changeDictionaryDict" configurations??I tried to search it on OpenFoam tutorial but I had no sucess at all.Can someone help me please?? I'm doing a case where i have a wall being heated and i need to make a flux between that wall and a air(which surround the wall).Please help me

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May 31, 2013, 03:18		#2
morard Member Dejan Morar Join Date: Nov 2010 Posts: 78 Rep Power: 16	There is a wallHeatFlux boundary condition, http://openfoamwiki.net/index.php/Contrib_wallHeatFlux or, you can use fixedGradient, wall { type fixedGradient; gradient uniform 1000; }

June 3, 2013, 20:56		#3
Grimoli Member Gabriel de PInho RImoli Join Date: Mar 2013 Posts: 49 Rep Power: 13	is there a way for using the wallheat flux for a chtmulti solver?

June 4, 2013, 07:29		#4
morard Member Dejan Morar Join Date: Nov 2010 Posts: 78 Rep Power: 16	I've never used that solver, but it should be possible, I think...

June 4, 2013, 07:40		#5
Grimoli Member Gabriel de PInho RImoli Join Date: Mar 2013 Posts: 49 Rep Power: 13	is there a way to change the buoyant solver to a cht multi region one?? that would be simpler for me instead of trying to do a flux between these 2 regions

June 4, 2013, 07:42		#6
Grimoli Member Gabriel de PInho RImoli Join Date: Mar 2013 Posts: 49 Rep Power: 13	minZ { type compressible::turbulentHeatFluxTemperature; heatSource flux; q uniform 7.53; value uniform 300; } } i saw topics of people saying that i would have to use this,but when i tried to put this on the dictionary dict,the program doesnt run at all,it gives more erros than everything.What probably I'm doing wrong??