Writing in regular time steps

milad1990 · August 2, 2020, 17:06

Hi every one.
I am trying to adjust my control-Dict to write my data on 0.01 second of my simulation. I am using PISO solver and MaxCO feature. So I used "AdjustableTimestep" for writing my data. I got my P,U and other things in 0.01 seconds as I wanted, but in Postprocessing folder, I got my forcecoefficients in a very irregular time steps, which should be actual time steps adjusted by my MaxCO. Do you know why it happens? How can I solve it?

Thank you for you kind help
Milad

VigneshSP · August 3, 2020, 03:44

Hi milad1990,
I think adding writeControl and and writeInterval to the forceCoeffs will get you the force coefficients at specified time of simulation.

writeControl runTime;
writeInterval 1;

the above will write for every 1s of simulation time.

milad1990 · August 10, 2020, 07:50

Hi VigneshSP
Thanks for your reply.
The problem however, was not that. Because I was using 'MAX CO' feature I found that OpenFOAM could not follow "Adjustable time step" in "0.001" increment that I determined in ControlDict. Also RunTime feature is not working too. btw, thank you |I solved my problem since I write my data in f=100hz, I can just write my forces and force coefficients in "output time" and its working. Thank you

August 2, 2020, 17:06	Writing in regular time steps	#1
milad1990 New Member Join Date: May 2020 Posts: 12 Rep Power: 5	Hi every one. I am trying to adjust my control-Dict to write my data on 0.01 second of my simulation. I am using PISO solver and MaxCO feature. So I used "AdjustableTimestep" for writing my data. I got my P,U and other things in 0.01 seconds as I wanted, but in Postprocessing folder, I got my forcecoefficients in a very irregular time steps, which should be actual time steps adjusted by my MaxCO. Do you know why it happens? How can I solve it? Thank you for you kind help Milad

August 3, 2020, 03:44		#2
VigneshSP New Member Vignesh S P Join Date: Jul 2018 Location: Coimbatore, Tamil Nadu, India Posts: 17 Rep Power: 7	Hi milad1990, I think adding writeControl and and writeInterval to the forceCoeffs will get you the force coefficients at specified time of simulation. writeControl runTime; writeInterval 1; the above will write for every 1s of simulation time. milad1990 likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[General] Extracting ParaView Data into Python Arrays	Jeffzda	ParaView	30	November 6, 2023 21:00
decomposePar problem: Cell 0contains face labels out of range	vaina74	OpenFOAM Pre-Processing	37	July 20, 2020 05:38
pimpleDyMFoam computation randomly stops	babapeti	OpenFOAM Running, Solving & CFD	5	January 24, 2018 05:28
Writing different time steps in different processors	sihaqqi	OpenFOAM Running, Solving & CFD	2	August 16, 2014 20:08
Micro Scale Pore, icoFoam	gooya_kabir	OpenFOAM Running, Solving & CFD	2	November 2, 2013 13:58

August 10, 2020, 07:50		#3
milad1990 New Member Join Date: May 2020 Posts: 12 Rep Power: 5	Hi VigneshSP Thanks for your reply. The problem however, was not that. Because I was using 'MAX CO' feature I found that OpenFOAM could not follow "Adjustable time step" in "0.001" increment that I determined in ControlDict. Also RunTime feature is not working too. btw, thank you \|I solved my problem since I write my data in f=100hz, I can just write my forces and force coefficients in "output time" and its working. Thank you