[anon_l]

Hello all,
I am trying to run a simulation with supercritical H2O through a simple tube geometry with thickness (conjugate heat transfer).
on running the simulation , my residuals seem to oscillate . Can someone please explain me how I should fix this ?
I am including a pictue of my residuals in this post.


Thanks

[lcarasik]

Your residuals actually look ok for the most part. An appropriate approach to tracking residuals is to look for several orders of magnitude reduction (as you see in your plot) and for the residuals to "steady out" after a large enough reduction. Eventuality all residual plots will start to show oscillations which is fine, it's just a matter of when and where they start to oscillate.

Further, are you tracking the change in mass flow or pressure drop? Or any other quantity of interest per iteratons?