[JoeFriend]

Hello!

I've been having trouble with the singleGraph post processing function when using chtMultiRegionFoam. I get the following error:

--> FOAM Warning :
From function Foam::label Foam::sampledSets::classifyFields()
in file sampledSet/sampledSets/sampledSetsGrouping.C at line 140
Cannot find registered field matching T

I've tried using the singleGraph function with other solvers that don't have parallel running and it works fine, so I guess the error is due to the fact that I need to specify somewhere the different regions in the function's script...

Anyone who had a similar problem? I would appreciate any help.

[mnikku]

This worked for me also with simpleGraph:
postProcess functionality in openFOAM 4 and total(p)

[JoeFriend]

Thanks for the answer! that worked for me.

[sitajeje]

Hallo JoeFriend and mnikku,

I have the exactly same problem as JoeFriend has described, and I checked the thread that you shared, but I didn't figure out what the solution is. Could you please give me a more clear hint? Thank you very much!

sitajeje

[mnikku]

In OF 4.X try command postProcess instead of solverName -postProcess

OR

Renaming your files.

For example: You have the original pressure in file p and another file pFileThatDoesntWork which you would like to process but can't due to classifyFields() error.

Use this at your own risk.
1) Backup your p by copying it to p.org (for example).
2) Copy pFileThatDoesntWork over p.
3) Do the postprocessing on the file p.
4) Restore p.org back to p.

[sitajeje]

Dear mnikku,

Thank you very much for your reply!

I used the command postProcess, and got the same "--> FOAM Warning :" message as JoeFriend reported.

I have different regions and each region have a "T" file for temperature. Should I combine all the "T" files into one and then execute singleGraph? How can I combine the "T" files please? I am still very confused.

Thank you very much in advance!

sitajeje

[mnikku]

Originally Posted by sitajeje

Dear mnikku,

Thank you very much for your reply!

I used the command postProcess, and got the same "--> FOAM Warning :" message as JoeFriend reported.

I have different regions and each region have a "T" file for temperature. Should I combine all the "T" files into one and then execute singleGraph? How can I combine the "T" files please? I am still very confused.

Thank you very much in advance!

sitajeje

Hi,
I really don't have a ready answer to you, but you could maybe test different options and see what works. Good luck in your endeavors!

[sitajeje]

Hi mnikku,

I found the following solution just now:
postProcess -func singleGraph -region air
postProcess -func singleGraph -region heater

sitajeje