Reply To: Thermal radiation probe results is different from theory

[dlooman]

"Perfect" fudges the view factors so it's an additional unknown.  Also, at 19.2, it was possible for a face to "see" through the back of other faces.  This was corrected in 2020R2.  This non-physical behavior made it possible for a view factor to be greater than 1.0.  To minimize the effect of this error you should include all faces of bodies in the radiation definition (so that a face can't see inside them.)