Criteria for Beverlooʼs scaling law
Zhang Sheng, Lin Ping †, Yang Guanghui, Wan Jiang-Feng, Tian Yuan, Yang Lei
       

Spatial profile of volume fraction on vertical cross section with D = 60d and (a) D0 = 20d; (b) D0 = 30d; (c) D0 = 40d; (d) D0 = 50d.