DEM and CFD-DEM: From established technology to new frontiers *C. Kloss (DCS Computing Gmbh), A. Mayrhofer (DCS Computing Gmbh), M. Niemann (DCS Computing Gmbh), A. Aigner (DCS Computing Gmbh), P. Seil (DCS Computing Gmbh), M. Kwakkel (DCS Computing Gmbh), C. Goniva (DCS Computing Gmbh)