write unsteady issue

NACA_00 · October 28, 2014, 10:34

Hi everyone,

I am running a simulation where in config file I have :

UNSTEADY_SIMULATION= TIME_STEPPING
TIME_DISCRE_FLOW= RUNGE-KUTTA_EXPLICIT
WRT_SOL_FREQ= 50

I would like to write distinct restart and the full volume solution files every WRT_SOL_FREQ steps (e.g. restart_flow_0050.dat, flow_0050.dat , restart_flow_0100.dat, flow_0100.dat and so on), but the code only writes one restart file and each time writing, it only overwrites that single file and doesn't create new files for every WRT_SOL_FREQ step.

Is there a way to do this?

PS. I think for dual time-stepping this is not an issue.

Thanks

Vino · October 29, 2014, 01:58

It is not possible to get solutions at different time level using TIME_STEPPING. It overwrites the file at every time. finally you get only one solution file. you may have to modify the code to write different solution files at different time level. As you said, Dual time stepping gives solution files for each time.

October 28, 2014, 10:34	write unsteady issue	#1
NACA_00 New Member Join Date: Oct 2014 Posts: 2 Rep Power: 0	Hi everyone, I am running a simulation where in config file I have : UNSTEADY_SIMULATION= TIME_STEPPING TIME_DISCRE_FLOW= RUNGE-KUTTA_EXPLICIT WRT_SOL_FREQ= 50 I would like to write distinct restart and the full volume solution files every WRT_SOL_FREQ steps (e.g. restart_flow_0050.dat, flow_0050.dat , restart_flow_0100.dat, flow_0100.dat and so on), but the code only writes one restart file and each time writing, it only overwrites that single file and doesn't create new files for every WRT_SOL_FREQ step. Is there a way to do this? PS. I think for dual time-stepping this is not an issue. Thanks

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October 29, 2014, 01:58		#2
Vino Senior Member Vino Join Date: Mar 2013 Posts: 130 Rep Power: 13	It is not possible to get solutions at different time level using TIME_STEPPING. It overwrites the file at every time. finally you get only one solution file. you may have to modify the code to write different solution files at different time level. As you said, Dual time stepping gives solution files for each time.