[OpenFOAM] Get data at special time

luuhoangthien · November 29, 2013, 21:48

Dear every one,

I have done with my simulation in OpenFOAM and now I'm Post-processing it, I have write force over time, and plot force with time, I want to visualize in Paraview at time force biggest, lowest, and average. because of I get writeInterval = 1000, it too much so that OpenFOAM don't output in region i want to do with it, I have attach picture my force and time.

Figure 1: Region I want to get data (Red circle) and Blue line are region I have folder data with U, P,...

Figure 2: Folder data I have

I was search too much on internet but I don't know how to get it, anybody can help me?

Best Regards
Hoang Thien

wyldckat · December 1, 2013, 12:29

Hi Hoang Thien,

I've read your post a few times and I still haven't understood what exactly you want to do.

From what I can understand, you only want to plot the values between 9.62 and 9.87 seconds?

If this is want you want to do, you'll have to use foamToVTK like this:
Code:
```
foamToVTK -time 9.62:9.87
```
Then open in ParaView the file "VTK/casename_..vtk", where "casename" is the name of your case.
As far as I know, this is the only way you can guarantee that only the desired time frame is shown in ParaView.

Best regards,
Bruno

luuhoangthien · December 1, 2013, 20:47

Dear Bruno,

Thank you for your answer
I mean I want to visualize and plot at time 9.7, 9.76, 9.8

Best regards,
Hoang Thien

wyldckat · December 8, 2013, 14:27

Hi Hoang Thien,

Sorry, I didn't manage to answer sooner.
From your latest post, do you mean that you've managed to follow my instructions with success?

Best regards,
Bruno

December 1, 2013, 12:29		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,974 Blog Entries: 45 Rep Power: 128	Hi Hoang Thien, I've read your post a few times and I still haven't understood what exactly you want to do. From what I can understand, you only want to plot the values between 9.62 and 9.87 seconds? If this is want you want to do, you'll have to use foamToVTK like this: Code: foamToVTK -time 9.62:9.87 Then open in ParaView the file "VTK/casename_..vtk", where "casename" is the name of your case. As far as I know, this is the only way you can guarantee that only the desired time frame is shown in ParaView. Best regards, Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

December 8, 2013, 14:27		#4
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,974 Blog Entries: 45 Rep Power: 128	Hi Hoang Thien, Sorry, I didn't manage to answer sooner. From your latest post, do you mean that you've managed to follow my instructions with success? Best regards, Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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December 1, 2013, 20:47		#3
luuhoangthien New Member ThienMa Join Date: Sep 2013 Posts: 8 Rep Power: 12	Dear Bruno, Thank you for your answer I mean I want to visualize and plot at time 9.7, 9.76, 9.8 Best regards, Hoang Thien