Solid to Solid Radiation
 

Hello, I want to model a furnace. So I just want to model radiation first and I don't want to consider fluid flow now. I use workbench to build two bodies then in CFX pre I use MC method and boundaries for the solids. It seems I need a connection between these solids. But I don't know How it can be done. Should I make any interface between solid domains and How? I wonder if we can model radiation between solids and ambient at the same time in CFX. I really thank you in advance. Hossein