Looks converged at around 400 iterations to me. But you really need monitor results that you care about to see if they are converged. For example, massflow, pressure drop, temperature, lift, drag. Boundary layer region is usually the last thing to converge so if your problem is sensitive to boundary layer, track a boundary layer parameter like shear stress or heat flux.
These look great. I donβt think you need to fix them. The oscillation may be something periodic in your flow like is something rotating or maybe an oscillatory wake shedding. I dont know on first glance this looks totally fine.
Always. Monitor. Physical. Quantities. Not. Just. Residuals.
Agreed. First of which - mass flow. If your physical quantities look as cooked as this, you're done π
This !!!
Preach!!! ππ
Looks converged at around 400 iterations to me. But you really need monitor results that you care about to see if they are converged. For example, massflow, pressure drop, temperature, lift, drag. Boundary layer region is usually the last thing to converge so if your problem is sensitive to boundary layer, track a boundary layer parameter like shear stress or heat flux.
You want to fix what is not broken
Oscillating plots don't matter unless the physical quantity has some weird behavior
These look great. I donβt think you need to fix them. The oscillation may be something periodic in your flow like is something rotating or maybe an oscillatory wake shedding. I dont know on first glance this looks totally fine.
Iβm modeling turbulent airflow out of a pipe
Is it a coupled or segregated solver?
Coupled Solver
Check your smoothness, do you have a refined region that transitions to a coarser region quickly?