期刊
POWDER TECHNOLOGY
卷 409, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.powtec.2022.117844
关键词
Wet non -spherical segregation; Long axis ratio; Liquid content; Dynamic properties; Reverse segregation
资金
- Ministry of Science and Tech-nology, Taiwan [MOST 110-2628-E-992-001]
This paper experimentally investigates the wet non-spherical granular segregation in a quasi-2D rotating drum. The results reveal that both the long axis ratio and the liquid content play crucial roles in wet non-spherical granular segregation. The steady-state segregation index decreases with the increase of the long axis ratio and increases with liquid content.
This paper experimentally investigates the wet non-spherical granular segregation in a quasi-2D rotating drum. The granular mixtures consisted of spherical POM beads and non-spherical red beans. To explore the interlocking effect resulting from particle shape, a long axis ratio was defined. Experimental results reveal that both the long axis ratio and the liquid content play crucial roles in wet non-spherical granular segregation. The steady-state segregation index decreases monotonically with the increase of long axis ratio. As the long axis ratio in-creases, the average velocity and granular temperature of spherical POM beads increase. Both properties also increase monotonically with liquid content. The dynamic angle of repose increases with the increasing liquid content, whereas the steady-state segregation index decreases. Reverse segregation does occur in a dry non -spherical mixture with a size ratio of 1.42, indicating that the shape effect appears to enhance the degree of reverse segregation appreciably.
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