THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

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Chenxi Hui

,

Qiang Li

,

Jiaxiang Peng

,

Ying Fang

COMPUTATIONAL FLUID DYNAMICS SIMULATION AND PERFORMANCE STUDY OF A THREE-SEPARATION COMBINED AIR CLASSIFIER

ABSTRACT
This paper mainly uses ANSYS-FLUENT 19.2 software to simulate the movement of the air-flow in a three-separation combined classifier. The simulation results indicate that the air-flow is uniformly distributed in the V-classifier under the action of dispersion plates and baffles. As the air-flow enters the rotor channel, the tangential velocity of the air-flow increases uniformly and remains stable in the axial direction, providing a stable centrifugal force field for particle classification. From the analysis of the flow field and particle trajectories, the separation interface between the upward path for particles and the downward path for coarse particles is relatively clear. The experimental results with sodium bicarbonate show that the V-classifier has a good pre-classification effect. The rotor cage speeds of 300 rpm and 500 rpm are the best working conditions for the coarse powder and fine powder collection, respectively. This study not only provides a new strategy for the design and development of air classifier, but also provides theoretical guidance for its application in industrial production.
KEYWORDS
Air classifier, Combined air classifier, CFD, flow field, Classification performance
PAPER SUBMITTED: 2023-05-13
PAPER REVISED: 2023-07-29
PAPER ACCEPTED: 2023-08-02
PUBLISHED ONLINE: 2023-09-02
DOI REFERENCE: https://doi.org/10.2298/TSCI230513183H
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 2, PAGES [1589 - 1603]
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Computational fluid dynamics simulation and performance study of a three-separation combined air classifier

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence