title: Density-driven spontaneous streak segregation patterns in a thin rotating drum.
abstract: Granular mixtures may segregate because of external driving forces, which play an important role in industry and geophysics. We investigate experimentally the mechanism of density-driven spontaneous streak segregation patterns in a thin rotating drum. We find that a spontaneous streak segregation pattern can occur in such a system, which we call a D-system. A phase diagram identifies three segregation pattern regimes in this study: the mixing regime, the core segregation regime, and the streak segregation regime.
authors.affiliation: Department of Mechanical Engineering, National Central University, No. 300, Jhongda Road, Jhongli 32001, Taiwan, Republic of China.
authors.forename: C C
authors.initials: CC
authors.lastname: Liao
authors.affiliation: Department of Mechanical Engineering, National Central University, No. 300, Jhongda Road, Jhongli 32001, Taiwan, Republic of China.
authors.forename: S S
authors.initials: SS
authors.lastname: Hsiau
authors.affiliation: Department of Mechanical Engineering, National Central University, No. 300, Jhongda Road, Jhongli 32001, Taiwan, Republic of China.
authors.forename: H C
authors.initials: HC
authors.lastname: Nien
mesh_terms: D005557:Formaldehyde; D017276:Friction; D005898:Glass; D011126:Polypropylenes; D012399:Rotation; D013193:Stainless Steel
chemical_list: D011126:Polypropylenes; D013193:Stainless Steel; D005557:Formaldehyde