Particle velocity profile in an inclined rotating drum
نویسندگان
چکیده
منابع مشابه
Granular flows in a rotating drum: the scaling law between velocity and thickness of the flow.
The flow of dry granular material in a half-filled rotating drum is studied. The thickness of the flowing zone is measured for several rotation speeds, drum sizes and beads sizes (size ratio between drum and beads ranging from 47 to 7400). Varying the rotation speed, a scaling law linking mean velocity vs. thickness of the flow, v approximately h(m), is deduced for each couple (beads, drum). Th...
متن کاملPattern selection by a granular wave in a rotating drum.
The results of an experimental investigation of granular segregation in a thin rotating drum are presented. A mechanism based on the presence of an uphill wave of particles has been found to govern the observed pattern of petals. Specifically we develop a simple model that captures the essential physics of the segregation and yields an algebraic expression that predicts the number of petals in ...
متن کاملSegregation pattern competition in a thin rotating drum.
Results are presented of an experimental investigation into patterned size segregation of binary granular mixtures in a thin rotating drum that is half full. It is observed that streaks of small particles are formed within regions of large ones where the integer number of streaks is fixed over a range of rotation rate of the drum. Different patterns form in adjacent parameter ranges and the dyn...
متن کاملSimulated three-component granular segregation in a rotating drum.
Discrete particle simulations are used to model segregation in granular mixtures of three different particle species in a horizontal rotating drum. Axial band formation is observed, with medium-size particles tending to be located between alternating bands of big and small particles. Partial radial segregation also appears; it precedes the axial segregation and is characterized by an inner core...
متن کاملContinuum theory of axial segregation in a long rotating drum.
We develop a continuum description for the axial segregation of granular materials in a long rotating drum based on the dynamics of the thin near-surface granular flow coupled to bulk flow. The equations of motion are reduced to the one-dimensional system for two local variables only, the concentration difference and the dynamic angle of repose, or the average slope of the free surface. The par...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2021
ISSN: 2100-014X
DOI: 10.1051/epjconf/202124914001