Thank you very much for replying. I actually created a report definition for mass-weighted average temperature at the outlet and monitored the outlet temperature, and it stayed constant over iterations. (However, I was not able to set convergence criteria for the report definition because I cannot find that option in Fluent under Solution tab). But I guess since the outlet temperature stayed constant the solution is fine?
Anyways, I also checked the flux report for mass flowrate by selecting inlet and outlet and seeing if net flux imbalance was less than 1% of the smallest flux (between mass flowrates of inlet or outlet) and it was very small (like 2e-16). Is the way I checked the fluxes correct? (this is my first time checking fluxes)
Also, how do I check for the total heat transfer flux? I do not know what boundaries to select.
Any advice would be appreciated!
Thank you!