If you are using results generated with CFDEM®coupling, please cite the following paper:
Goniva, C., Kloss, C., Deen, N.G., Kuipers, J.A.M. and Pirker, S. (2012): “Influence of Rolling Friction Modelling on Single Spout Fluidized Bed Simulations”, Particuology, DOI 10.1016/j.partic.2012.05.002