[Amber0922]

Hi, everyone.
I ran a unsteady simulation of a aircraft inlet, and I set the inner iteration as 30. But after 1250 steps, the inner iteration began to reduce, and finally to 13. I've never been in this situation before. Or does the inner iteration steps automatically decrease after convergence in a time step?

I attatched my time domain setting below.Any advice and help would be very useful to me. Thank you for your patience.


------------------------------------------------------------------------------------
TIME_DOMAIN= YES
TIME_MARCHING= DUAL_TIME_STEPPING-2ND_ORDER
TIME_STEP= 5E-7
MAX_TIME= 1
UNST_CFL_NUMBER= 0.0
INNER_ITER= 30
TIME_ITER = 5000
RESTART_ITER=2
WINDOW_START_ITER = 4000
WINDOW_FUNCTION = SQUARE
-------------------------------------------------------------------------------------

[bigfootedrockmidget]

Hi,
Yes, The convergence of the fields is monitored, I think unsteady monitors the same fields (CONV_FIELD= ..) as for steady simulations.

[Amber0922]

Originally Posted by bigfootedrockmidget

Hi,
Yes, The convergence of the fields is monitored, I think unsteady monitors the same fields (CONV_FIELD= ..) as for steady simulations.

Thank you so much, I get it. Have a nice day!