Round robin test on angle of repose: DEM simulation results collected from 16 groups around the world

The round robin test (the simultaneous analysis of the same problem) is a method to investigate variance and sensitivity results provided by different analysts for given problem reliability particular software used each group participating in test. A has been conducted traditional numerical (e.g., finite difference method), but not yet discrete element (DEM). This paper presents first ever on DEM simulation angle repose, involving 16 groups from around world using softwares. Within scope this test, most reported similar repose that differed only few degrees average experimental values, which was initially concealed participants. There also good agreement degree repose. In addition, revealed recent trends interparticle constitutive models softwares considering reports obtained