Time-averaging

cyln · January 24, 2018, 14:23

Hello,

I am running a transient simulation using pimpleFoam. I would like to time-average the data after the simulation reaches the statistically-steady state.

Can anybody tell me how the time-averaging is done in OpenFOAM?

Cheers!

LuckyTran · January 25, 2018, 02:07

Use fieldAverage

Here's an example

After you are ready to collect statistics, put it in your controlDict and then run again.

New variables are created and saved in the time dirs like Umean, Pmean and so on. Setting prime2mean to on collects rmse statistics.

ht2017 · January 25, 2018, 02:19

Quote:

Originally Posted by LuckyTran

Use fieldAverage

Here's an example

After you are ready to collect statistics, put it in your controlDict and then run again.

New variables are created and saved in the time dirs like Umean, Pmean and so on. Setting prime2mean to on collects use statistics.

Hi you,
I am sorry you. I have the problem not concerning it. Now I want to plot wallshearstress in Paraview. could you help me??

January 24, 2018, 14:23	Time-averaging	#1
cyln Senior Member cyln Join Date: Jul 2016 Posts: 102 Rep Power: 10	Hello, I am running a transient simulation using pimpleFoam. I would like to time-average the data after the simulation reaches the statistically-steady state. Can anybody tell me how the time-averaging is done in OpenFOAM? Cheers!

January 25, 2018, 02:07		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,761 Rep Power: 66	Use fieldAverage Here's an example After you are ready to collect statistics, put it in your controlDict and then run again. New variables are created and saved in the time dirs like Umean, Pmean and so on. Setting prime2mean to on collects rmse statistics. ht2017 likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to export time series of variables for one point?	mary mor	OpenFOAM Post-Processing	8	July 19, 2017 11:54
pressure in incompressible solvers e.g. simpleFoam	chrizzl	OpenFOAM Running, Solving & CFD	13	March 28, 2017 06:49
Extrusion with OpenFoam problem No. Iterations 0	Lord Kelvin	OpenFOAM Running, Solving & CFD	8	March 28, 2016 12:08
dynamic Mesh is faster than MRF????	sharonyue	OpenFOAM Running, Solving & CFD	14	August 26, 2013 08:47
mixerVesselAMI2D's mass is not balancing	sharonyue	OpenFOAM Running, Solving & CFD	6	June 10, 2013 10:34