Ah I see. Since the heat transfer within the pipe wall cannot be modeled, let’s say if we simply simulate the sand fluidised bed flowing outside of the pipe walls (no air flow inside the pipe), is it possible to observe the temperature change at the outer pipe walls due to the hot sand ? Because previously I managed to capture the change in temperature for the sand but no for the pipe wall.
I’ve attached a zip file here
indirectheatexchanger_2025-03-26T145844.748444.zip (4.3 MB)
of what I’m trying to do to help better illustrate it. Many thanks for your help Jeff.