Defined in couplingProperties dictionary.
The basic IO-model writes particle positions velocities and radii to files. The default output directory ($casePath/CFD/proc*/time/lagrangian). Using the keyword “serialOutput;” in couplingProperties the IO is serial to the directory ($casePath/CFD/lagrangian). In the latter case only the data on processor 0 is written! Data is written every write time of the CFD simulation.