[Waynelin]

hi! Im new to openfoam. So I was wondering how can I sample p_rgh as a file and can write like timestep in different file rather than all data in a text file.

for example I write a sampleDict to postprocess sample and the p_rgh file will go into the file postprocess and it can write as a independent file like
0.2 0.4 0.6 0.8 1.0 and every p_rgh file will go into the 0.2 0.4 0.6 ....file.

cause I need the data become the file that can put into the wssi upfoam to run.

sorry about the stupid question. can anyone help? Thanks!!

and by the way, the data I want to sample is patch bottom. how can I sample the bottom data p_rgh??

[AtoHM]

Hello,
I have a hard time following your "p_rgh goes into that" etc. text, but I think you want certain values put out over time (iteration) of your simulation.

In OpenFOAM you can use the surfaceFieldsValue (patches, faceZones, ...) or volFieldValue (cellSet, cellZone, region) function objects to get this output. The documentation is pretty straight-forward on this: https://www.openfoam.com/documentati...ieldValue.html


You can just add this to your controlDict as shown in the linked tutorial https://develop.openfoam.com/Develop...em/controlDict and the appropriate files will be written into the postProcess folder created at runtime.
Hope this answers your question.

[Waynelin]

sorry for reply so late.

I've solve the problem. Thank you for the answer !