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Effects of size polydispersity on segregation of spherical particles in rotating drum
European Physical Journal E Số 6, năm 2021 (Tập 44, trang -)
ISSN: 12928941
ISSN: 12928941
DOI: 10.1140/epje/s10189-021-00091-0
Tài liệu thuộc danh mục:
Article
English
Từ khóa: Axial Segregation; Flow properties; Migration process; Particle migration; Segregation process; Size polydispersity; Spherical particle; Surrounding pressure; article; discrete element analysis; effect size; pressure gradient; Segregation (metallography)
Tóm tắt tiếng anh
Abstract: To get insight into the segregation process of a polydisperse granular materials flow, we numerically investigated the migration process of particles in a rotating drum operating in the rolling regime by means of the discrete element method. Particle migration is analyzed through the variation of the proportion of particles in different zones where the flow property is characterized. The proportion of particles in different zones of the drum shows to increase in the center of the flow radially and axially where a higher concentration of small particles is observed, while its decreases in other zones with a higher concentration of larger particles. Interestingly, we find that the migration process of particles leads to radial and axial segregation which is caused by a combination between the exerted fluctuation forces on particles and its surrounding pressure gradient. Graphic abstract: [Figure not available: see fulltext.] � 2021, The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature.
