摘要： Granular materials segregate because of differences in density, size, surface roughness, or shape, thus causing critical problems in many industries. In this study, we systematically and experimentally investigated the behavior of density-induced granular segregation in a circular thin rotating drum. We studied the effects of the density ratio, rotation speed, and fill level on the behavior of granular streak segregation. We used particle tracking velocimetry and image processing technology to determine the number of petals and the shape index of streak patterns. The results show that the density ratio, rotation speed, and fill level significantly influence the behavior of density-induced granular segregation, and the shape index decreases with an increase in the rotation speed. The passage time elongates when the density ratio is increased. Moreover, the final stable shape index does not increase monotonically with the fill level. The maximum shape index occurs at a fill level of 0.51. [Display omitted] •Density ratio plays a crucial role in density-driven streak segregation behavior.•Fill level has a significant effect on density-driven streak segregation behavior.•Final stable shape index does not increase monotonically with the fill level.•The passage time becomes longer with an increase in the density ratio. 出版者： Elsevier B.V 出版日期： 2015-11-01 出處： Powder technology, 2015-11, Vol.284, p.514-520 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2015 Elsevier B.V. 識別號： ISSN: 0032-5910 識別號： EISSN: 1873-328X 識別號： DOI: 10.1016/j.powtec.2015.07.030
