Xu Guang-Lei, Hu Guo-Qi, Zhang Xun-Sheng, Bao De-Song, Chen Wei, Hou Mei-Ying, Lu Kun-Quan. The influence of channel width and inflow rate on the critical opening-size of granular flow in two-dimensional channelsJ. Acta Physica Sinica, 2003, 52(4): 875-878. DOI: 10.7498/aps.52.875