I am running a transient thermal analysis on solid rocket
motor which is initially at 270 deg K. I am applying convection to
the outside of the cylinder with a heating curve. The ambient
temperature increases from 270 deg K to 1280 deg K in 14 secs and
remains constant at tge 1280 deg K for the remaining time.
The model is losing heat somehow and temperatures are decreasing.
Has anyone else run into this?