[Baya]

Hello,
I am a beginner in Ansys fluent.
my thesis involves simulation of flat plate solar collector using radiation model. I have been able to mesh the entire geometry which includes glass cover, airgap, absorber plate and tube with water. my problem is how to apply correct boundary conditions.. how to connect the components from glass top surface to water in the pipe for heat transfer using radiation model.

Please, I need help. I am actual fixed at this point.

[Samanebadiei]

Hello
You simulate 2D or 3D?
If you similate 3D you have to on radition mode-solar and input altitude and other information