Radiation Surface Boundary condition that does not face an enclosure

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Akmal Permana

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Jun 10, 2026, 10:04:18 PM (2 days ago) Jun 10
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Hi Robin,

I want to check the condensation for roof, the something wrong with the boundaries condition, may i know where is the mistake

Thank youRadiation Surface problem.jpg
1-5000000.THM

Robin Mitchell

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Jun 11, 2026, 1:11:27 PM (yesterday) Jun 11
to Akmal Permana, THERM
You have the interior boundary conditions Raditiation model set to "Manual Enclosure Model". 

You should set it to "Automatic Enclosure Model". 

If you do that, the model will run, although it appears that there are gaps in the mesh

image.png

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Robin Mitchell
Windows & Envelope Materials Group
Lawrence Berkeley National Laboratory

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