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boundary condition P1/MarshakRadiation

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Old   July 12, 2010, 04:48
Default boundary condition P1/MarshakRadiation
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hello everbody,

I have a question concerning radiation simulations. I want to simulate Sandia Flame D with radiation. around the flame there should be no cover. so it is an open space i.e. openWall. should i use zeroGradient or MarshakRadiation for this?

openWall
{
type zeroGradient;
}
or

openWall
{
type MarshakRadiation;
T T;
emissivity 0; (= no emissivity)
value uniform 0;
}

what must I use at streaming in- and outlets? I'm asking because in the bouyantSimpleRadiationFoam/hotRadiationRoom case there are only walls and neither open patches nor in/outlets...

Thanks in advance

Marc

Last edited by marcbest; July 12, 2010 at 07:32.
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Old   July 12, 2010, 07:41
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here you can see the G-file if this helps
and wall should be the "open" wall
Attached Files
File Type: txt G.txt (2.1 KB, 249 views)

Last edited by marcbest; July 13, 2010 at 10:17.
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Old   June 19, 2018, 14:18
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Germilly Barreto
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Hello marcbest,

Have you found a solution for your problem?
I think I'm facing with the same problem.

I have posted a question in the following thread:

Understanding the Marshak boundary condition (radiation)

can you please help me?

Best regards
GB
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