Avalanching patterns of irregular sand particles in continual discrete flow
Han Ren1, Zhang Yu-Feng1, Li Ran2, Chen Quan1, Feng Jing-Yu1, Kong Ping3, †
       

The velocity distribution of the surface particulate flow in mid-to-edge pattern. (a) The velocity distribution at the initial stage, (b) the velocity distribution at the middle stage, and (c) the velocity distribution at the end stage of the avalanche.