Heat Transfer Module - radiation calculations separation

Hi,

I created a model in which I want to calculate steady-state temperatures of assembly of solids with given boundary temperature, heat dissipation and so on.

And I managed to do that using Heat Transfer in Solids interface with Surface-to-Surface radiation option switched on.

However, calculations take much time, mainly because of the need of consideration of radiative effects.

I was wondering if there's a way to do the radiation calculations separately - just to find the radiative interface between every two nodes. Then using this data, I would like to calculate a few thermal cases, using different boundary conditions for temperature and heat dissipation.

So, whatever the program calculates to get radiation heat transfer (view factors?), I would like to store it somewhere and then use it as input for a "thermal" case to avoid exceeding computation time, if I don't change the geometry or any radiation properties between different thermal analysis cases.

I'm sure there's an easy way to do it, which I, as a beginner, yet don't know.

Looking forward to Your help,
PCZ