Hard-disk simulations are used for two-dimensional rapid granular shear flows of circular
disks between two rotating cylinders. The intermittency effects associated with the rate of the
energy dissipation of collisions are studied. The statistics of intermittent signals of energy
dissipation reveals that a power law governs the dynamics of rapid shear granular flows. A
dynamical system approach based on the Gledzer–Ohkitani–Yamada shell model of
turbulence is employed to reproduce signals for energy dissipation that are statistically …