I attempted to complete the "Modeling radiation and natural convection" tutorial provided with the software. I managed to achieve the same results for the first tutorial, but for the rest of the tutorial I got different results, or would not display the resluts. Nor would it calucate the total heat flux. I don't think the models were converging properly. Has anyone had this problem before?

I have done the tutorial totally without any problem. Just make your question clear to be able to answer your question.