Numerical Simulation of Multi-Phase Flow Hydrodynamic in Rotating Drum: Effect of Restitution Coefficient on Active Layer Thickness

Document Type : Review

Authors

1 Msc. in Chemical Engineering, Computational Fluid Dynamics (CFD) Research Laboratory, School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran

2 Professor Associated of Computational Fluid Dynamics (CFD) Research Laboratory, School of Chemical Engineering, Iran University of Science and Technology (IUST), Tehran, Iran

Abstract

A two-dimensional hydrodynamic simulation of two-phase flow in a rotating drum under rolling conditions was examined in this study. The Eulerian-Eulerian multi-phase approach was utilized in this study to model the gas-solid system in a rotating drum, combined with the kinetic theory of granular flow. The results of these simulation was verified with experimental data was reported with Santos et al. (2015) which indicates that the results are consistent with experimental work. In this study impact of restitution coefficient on active layer thickness was investigated. For this purpose the restitution value set to different values (0.85, 0.9, 0.92, and 0.95) and their effect on the thickness of active layer on the rotating drum was examined. The thickness of the active layer was increased by raising the coefficient of restitution from 0.85 to 0.95, which, given that the majority of mixing occurs in rotating beds, can demonstrate an improvement in the degree of mixing in rotating beds with the results.

Keywords

References

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Farayandno
Volume 16, Issue 74 - Serial Number 74
September 2021
Pages 64-77

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