thank you very much. As for your question - I set the boundary condition as zero heat flux for the stubs. Since I took off the stubs I was granted more allowance for the mesh number of elements and was able to make the mesh a bit finer for the model - maybe that worked. Yet to check exactly what is happening.nRegarding residuals - Generally is there a threshhold below which the residuals should fall....like for energy I read somewhere it is better if it falls below -10^6?nAlso, one more small thing - I plotted certain xy charts in cfd post along an inserted line. The graph plots well but I want to export it to excel. May I please know if cfd post supports the exporting of xy data along an inserted line at a particular location?nThank you very much!n