CFX radiation model wall heat flux imblance
 

when i use three plate (between the plate, there is air.) to calculate radiation between the plate,the left plate is high temperature plate,the right plate is low temperature ,i find that wall heat flux is imbalance in different surface,that is, the wall heat flux in the left plate ,the media plate and the right plate don't agree to each other
and the radiation model is DT（Surface to Surface）.
anyone can give me a help? thx！！！