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Rotary cylinders: Transverse bed motion prediction by rheological analysis
Author(s) -
Perron J.,
Bui R. T.
Publication year - 1992
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450700203
Subject(s) - mechanics , fluent , transverse plane , rheology , consistency (knowledge bases) , cylinder , flow (mathematics) , conservation of mass , motion (physics) , computational fluid dynamics , materials science , simulation , physics , mathematics , classical mechanics , engineering , structural engineering , geometry , thermodynamics
A method for predicting the transverse motion of a granular bed in a rotary cylinder is proposed, based on a non‐Newtonian rheological model of the pseudo‐plastic type, i.e. with a flow behaviour index ( n ) between 0 and 1. For a good simulation of bed motion, the model must be able to adequately reproduce the bed velocity profile in both the upper (downward flowing) and the lower (upward moving) zones. It is shown that to do so there is the need to adjust not only the consistency index K but even more importantly the flow behaviour index, n . The mass and momentum conservation equations are solved by the CFD code FLUENT. The model is applied to the simulation of the motion of an alumina bed and the computed results compared with experimental data.