Radiation quantity through an opening

Forrest

Hi all,

For radiation modelling using cfx5.7, in the post we have the variable 'Wall Irradiation Flux' â€" which means (if I am right) the radiative energy arriving towards the wall from everywhere else. But how do I know the Irradiation Flux for an opening, namely the quantify of the radiative energy arriving towards the opening from everywhere?

My case is looking at: A constant solar heat flux travels through two pane glazings and reaches the internal controlled environment. I want to know the heat load for the internal environment, from both the transmitted solar heat flux and the long wave radiation from the internal glazing surface.

Any suggestions?

Forrest