This repository includes A prototype of an OpenFOAM case file to calculate the drag at low Reynolds numbers on a sphere inside a section of an annular domain representing the geometry of an automatic ball balancer with a radial ball bearing contour on the raceway. Prerequires: Linux OS or Windows Subsystem Linux (tested with Ubuntu) OpenFOAM (tested with OpenFOAM7 Version 20190708) python3 Usage create a copy of the OpenFoam case tar -xf OFcase.tar mv OFcase case001 modify parameters.py inside the case folder execute cd case001 chmod +x Allrun_parallel ./Allrun_parallel Results gained with this case file, which are presented in the associated publication.

{"references": ["https://jimhawley.ca/downloads/Plotting_OpenFoam_residuals_and_forces_in_real_time.pdf"]}