Modeling dilute and dense granular flows in a high shear granulator
Artikel i vetenskaplig tidskrift, 2014

This study models a high shear granulation system, including both dense and dilute regions. The dense region is modeled using an approach in which the system is treated as a visco-plastic fluid and the rheology of such a fluid is evaluated. The dilute regions are modeled by the standard Kinetic Theory of Granular Flow (KTGF). The switching between the models is accounted for by using the dimensionless inertial number, defined as the ratio shear forces/pressure forces. The results compare favorably with experimental data for a disk impeller high shear granulator. Granular temperatures and volume fractions, in particular, are well captured by the aforementioned model. The velocity profiles show better agreement with experimental data as compared to previous studies. (C) 2014 Elsevier B.V. All rights reserved.

Rheology

High shear granulation

Inertial number

Continuum modeling

Dense/dilute granular flows

Författare

Mohammad Khalilitehrani

Chalmers, Kemi- och bioteknik, Kemisk apparatteknik

Per Abrahamsson

Chalmers, Kemi- och bioteknik, Kemisk apparatteknik

Anders Rasmuson

Chalmers, Kemi- och bioteknik, Kemisk apparatteknik

Powder Technology

0032-5910 (ISSN)

Vol. 263 45-49

Styrkeområden

Produktion

Ämneskategorier

Kemiteknik

Strömningsmekanik och akustik

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2017-10-07