[OpenFOAM] converting velocities from cell centers to corner

torsy87 · March 13, 2013, 13:54

Hello All,
I am trying to convert velocities from cell centers to corners.
OpenFOAM saves information of velocities in cell centers but
paraView displays velocities on the corners. How can I do that?
In few words, how can I obtain the numerical values of the velocities
displayed with paraView (in the corners), while velocities files
save the values in the cell centers?

thank

wyldckat · April 14, 2013, 08:09

Greetings Mauro and welcome to the forum!

Sorry for the late reply, but I was hoping that someone else would have answered you sooner, while I was busy for these past weeks.

As for your question, I can't figure out what exactly you want to do with the values afterwards. Because I think there are two possible answers to your question:

If you want the values from ParaView on the vertexes, you can simply export the values to CSV: File -> Save Data
If you want to calculate in OpenFOAM the values of U on the corners of the cells, then I think what you are looking for is the following utility: https://github.com/wyldckat/reconstr...te-fields/wiki
Study its code if you want to implement this feature into a custom solver you are making.

Best regards,
Bruno

March 13, 2013, 13:54	converting velocities from cell centers to corner	#1
torsy87 New Member Mauro Torsello Join Date: Mar 2013 Posts: 1 Rep Power: 0	Hello All, I am trying to convert velocities from cell centers to corners. OpenFOAM saves information of velocities in cell centers but paraView displays velocities on the corners. How can I do that? In few words, how can I obtain the numerical values of the velocities displayed with paraView (in the corners), while velocities files save the values in the cell centers? thank

April 14, 2013, 08:09		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,974 Blog Entries: 45 Rep Power: 128	Greetings Mauro and welcome to the forum! Sorry for the late reply, but I was hoping that someone else would have answered you sooner, while I was busy for these past weeks. As for your question, I can't figure out what exactly you want to do with the values afterwards. Because I think there are two possible answers to your question: If you want the values from ParaView on the vertexes, you can simply export the values to CSV: File -> Save Data If you want to calculate in OpenFOAM the values of U on the corners of the cells, then I think what you are looking for is the following utility: https://github.com/wyldckat/reconstr...te-fields/wiki Study its code if you want to implement this feature into a custom solver you are making. 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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