I want to consider radiation in my flow simulation model. The model is a hollow cylinder with a bar in the middle as heat source and air as a fluid. The analysis type is an internal one. I want to consider radiation from the heat source surface and see how it affects the temperature inside the cylinder and also across the cylinder wall. Just wonder how to define my radiative surfaces? Thanks.
Just to clarify, I want to consider radiation from heat source surface(bar). My heat source is a volume heat source. Do I need to define radiation source as well on my heat source? Can someone help me how to set up radiation problem in a flow simulation? I attached the model . Thanks.