[OpenFOAM] Paraview plot time average

tonyuprm · August 3, 2010, 15:16

Hi,

I want to plot time velocity averages over a line using paraview but I can't figure out how. I can plot at one specific time but how can I get the time average of that?

Thanks,

Tony

Edison_Ge · September 6, 2010, 11:33

Quote:

Originally Posted by tonyuprm

Hi,

I want to plot time velocity averages over a line using paraview but I can't figure out how. I can plot at one specific time but how can I get the time average of that?

Thanks,

Tony

check this tread and you may find some inspiration. I'm having the same problem, so if it worked. Please let me know

http://www.cfd-online.com/Forums/ope...tatistics.html

tonyuprm · September 6, 2010, 12:39

Hi,

I found a way to do this. One should use the filter "temporal statistics" under "Temporal". This will calculate the average of all the time steps. If you want a specific range of times just open the VTK files of the corresponding time steps and use the filter. The variable with the computed average will appear in the dropbox where u can select the variable you want to visualize. If you then want to plot over a line, use that filter and that should do it.

Good luck,

Tony

chandra shekhar pant · September 11, 2019, 02:44

Hello Tony,

Many thanks for this post, it helped a lot. But I don't understand how to average from a certain period of time steps. Particularly in your answer "If you want a specific range of times just open the VTK files of the corresponding time steps and use the filter", I don't understand the opening the VTK files corresponding to time steps. When I open the paraFoam it automatically loads all the time steps (from 0-1), and I want the average from 0.7-1

Any help is highly appreciated.

Thanks a lot!

Xavier_95 · February 10, 2021, 04:01

Hi. I know that this tread is quite old but I am facing the same problem. Did you find the solution? I also need to do an average on a limited number of timeSteps. Thanks in advance for your help.

juliemafronczak · November 8, 2021, 07:15

Quote:

Originally Posted by Xavier_95

Hi. I know that this tread is quite old but I am facing the same problem. Did you find the solution? I also need to do an average on a limited number of timeSteps. Thanks in advance for your help.

Did you get it? I have the same problem.

ckpark · January 19, 2022, 12:29

Quote:

Originally Posted by juliemafronczak

Did you get it? I have the same problem.

You just need to put those folders of timesteps you do not need aside (e.g. in another subfolder that paraview doesn't read) and reopen your .foam file again

s1291 · December 24, 2023, 19:02

Quote:

Originally Posted by Xavier_95

Hi. I know that this tread is quite old but I am facing the same problem. Did you find the solution? I also need to do an average on a limited number of timeSteps. Thanks in advance for your help.

In Paraview:

Load the case.
Apply the Extract Time Steps filter and select the time step indices.
Click Apply.

August 3, 2010, 15:16	Paraview plot time average	#1
tonyuprm Member Tony Join Date: Jun 2010 Posts: 54 Rep Power: 15	Hi, I want to plot time velocity averages over a line using paraview but I can't figure out how. I can plot at one specific time but how can I get the time average of that? Thanks, Tony

September 6, 2010, 12:39	Time average	#3
tonyuprm Member Tony Join Date: Jun 2010 Posts: 54 Rep Power: 15	Hi, I found a way to do this. One should use the filter "temporal statistics" under "Temporal". This will calculate the average of all the time steps. If you want a specific range of times just open the VTK files of the corresponding time steps and use the filter. The variable with the computed average will appear in the dropbox where u can select the variable you want to visualize. If you then want to plot over a line, use that filter and that should do it. Good luck, Tony chandra shekhar pant, hfs, arvindpj and 23 others like this.

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September 11, 2019, 02:44		#4
chandra shekhar pant Senior Member chandra shekhar pant Join Date: Oct 2010 Posts: 220 Rep Power: 16	Hello Tony, Many thanks for this post, it helped a lot. But I don't understand how to average from a certain period of time steps. Particularly in your answer "If you want a specific range of times just open the VTK files of the corresponding time steps and use the filter", I don't understand the opening the VTK files corresponding to time steps. When I open the paraFoam it automatically loads all the time steps (from 0-1), and I want the average from 0.7-1 Any help is highly appreciated. Thanks a lot!

February 10, 2021, 04:01		#5
Xavier_95 New Member Saverio Join Date: Oct 2020 Posts: 5 Rep Power: 5	Hi. I know that this tread is quite old but I am facing the same problem. Did you find the solution? I also need to do an average on a limited number of timeSteps. Thanks in advance for your help.