Numerical simulation of particle motion in turbo classifier--颗粒学报PARTICUOLOGY

Xu, N., Li, G., & Huang, Z. (2005). Numerical simulation of particle motion in turbo classifier. China Particuology, 3(5), 275-278. https://doi.org/10.1016/S1672-2515(07)60201-2

Numerical simulation of particle motion in turbo classifier

Ning Xu ^{a b}, Guohua Li ^a *, Zhichu Huang ^a

a School of Mechanical and Electronical Engineering, Wuhan University of Technology, Wuhan 430070, P. R. China
b China Luoyang Float Glass Group Ltd. Liability Co., Luoyang 471009, P. R. China

10.1016/S1672-2515(07)60201-2

Volume 3, Issue 5, October 2005, Pages 275-278

Received 15 March 2005, Accepted 5 July 2005, Available online 14 December 2007.

E-mail: ghli@mail.whut.edu.cn

Highlights

Abstract

Research on the flow field inside a turbo classifier is complicated though important. According to the stochastic trajectory model of particles in gas-solid two-phase flow, and adopting the PHOENICS code, numerical simulation is carried out on the flow field, including particle trajectory, in the inner cavity of a turbo classifier, using both straight and backward crooked elbow blades. Computation results show that when the backward crooked elbow blades are used, the mixed stream that passes through the two blades produces a vortex in the positive direction which counteracts the attached vortex in the opposite direction due to the high-speed turbo rotation, making the flow steadier, thus improving both the grade efficiency and precision of the turbo classifier. This research provides positive theoretical evidences for designing sub-micron particle classifiers with high efficiency and accuracy.

Graphical abstract

Keywords

turbo classifier; numerical simulation; flow field; particle trajectory

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