Learning Forum

[patrickm7995]

I have a thin plate with the bottom surface receiving solar flux, and the other surfaces being fully transparent and the inside of the geometry being air with very low (1e-5) density.

This bottom wall was set to 0 transmissivity and 0 absorptivity for this case, so it was expected that the solar radiation coming in (1377 W/m2) would be split between reflectivity in the IR and visible, 688.5 W/m2, which occured.

However, the absorbed visible solar flux map was also showing a value, which was unexpected. The absorbed IR was as expected, 0 W/m2. 

Does anyone have any reasons this may be occuring? Thank you.

[SVV]

Hi,

Can you please check your settings again?

Please note absorbed visible solar flux is not evalueted for opaque surface.

 

[patrickm7995]

Thank you for your reply. Sorry, I am confused: opaque surfaces do not have absorbed solar flux?

[li can]

i have the same confusing , how  to set opaque surface condition to absorb solar flux ?