OpenFoam-Yade coupling fluid cell p,U at each time step

Hi,

This question is exclusive to openfoam, please restrict your questions to the coupling and the solver. The write interval settings can be found in the system/controlDict -> writeInterval and writeControl and so on..

For questions on openfoam, this is this best place :
https://www.cfd-online.com/Forums/openfoam/

Hi Deepak,

Thank you for your comment. I was using the same controlDIct for an openFoam case without DEM coupling, output files for each timestep were generated as expected. However, once I added the DEM coupling code, the script does not generate the output files anymore. Hence I was wondering it might be to do with the coupling solver?

I see, did you run the Foam case without particles in serial? Note in the coupling, openfoam is parallel, the solution dirs such as '0,0.005' etc in the case of parallel run are in directories 'processor0', 'processor1' etc. the solution files are in these, to read this data . see[1]

[1] https://yade-dem.org/doc/FoamCoupling.html#post-processing

Hi Deepak,

Thank you for your quick response. Processor 0,1 are exactly the folder I was looking for. Still have one question, what is the difference between these two folders? I noticed the values under the same time step in these two folders are different nut not sure why. Thank you.

In parallel runs, the domain is partitioned among the processors (based on a spatial domain decomposition algorithm, can be set in the system/decomposeParDict ). Hence the files in processor* corresponds to the solution of 'piece' of the domain. Please see[1]

[1]https://cfd.direct/openfoam/user-guide/v6-running-applications-parallel/