Stop simulation when time step reaches specified threshold

finn_amann · December 13, 2023, 09:51

Hello friends!

Does anyone know if it is possible to automatically stop a running simulation if the time step reaches a specified lower bound? E.g. when dt gets as low as 1e-7 s, I'd like for the simulation to stop. This way, I could save valuable computation time on my cluster, since in my case, something must have gone very wrong, if the time step is that small.

Best regards

Finn

Yann · December 13, 2023, 12:00

Hello Finn,

If you are using the OpenCFD branch (openfoam.com) you should be able to do it using the runTimeControl function object: https://doc.openfoam.com/2306/tools/...unTimeControl/

The minTimeStep condition looks like it does what you are looking for.

Regards,
Yann

finn_amann · December 13, 2023, 12:24

Exactly what I needed, thanks so much Yann

Best regards

December 13, 2023, 09:51	Stop simulation when time step reaches specified threshold	#1
finn_amann New Member Join Date: Dec 2021 Posts: 27 Rep Power: 4	Hello friends! Does anyone know if it is possible to automatically stop a running simulation if the time step reaches a specified lower bound? E.g. when dt gets as low as 1e-7 s, I'd like for the simulation to stop. This way, I could save valuable computation time on my cluster, since in my case, something must have gone very wrong, if the time step is that small. Best regards Finn

December 13, 2023, 12:00		#2
Yann Senior Member Yann Join Date: Apr 2012 Location: France Posts: 1,058 Rep Power: 26	Hello Finn, If you are using the OpenCFD branch (openfoam.com) you should be able to do it using the runTimeControl function object: https://doc.openfoam.com/2306/tools/...unTimeControl/ The minTimeStep condition looks like it does what you are looking for. Regards, Yann finn_amann likes this.

December 13, 2023, 12:24		#3
finn_amann New Member Join Date: Dec 2021 Posts: 27 Rep Power: 4	Exactly what I needed, thanks so much Yann Best regards Yann likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Convergence problem of OF	WUYing	OpenFOAM Running, Solving & CFD	2	September 20, 2021 10:09
LES, Courant Number, Crash, Sudden	Alhasan	OpenFOAM Running, Solving & CFD	5	November 22, 2019 02:05
Star cd es-ice solver error	ernarasimman	STAR-CD	2	September 12, 2014 00:01
plot over time	fferroni	OpenFOAM Post-Processing	7	June 8, 2012 07:56
Could anybody help me see this error and give help	liugx212	OpenFOAM Running, Solving & CFD	3	January 4, 2006 18:07