Sawdust discharge rate from aerated hoppers

This paper presents a numerical and experimental study of the discharge rate of sawdust from an aerated hopper as an important parameter in many industrial processes involving the handling of other granular materials. Numerical experiments are conducted by means of an Eulerian-Eulerian approach coup...

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Bibliographic Details
Published in:Particuology 2011-06, Vol.9 (3), p.306-313
Main Authors: Chen, Pan, Yuan, Zhulin, Chyang, Chien-Song, Zhuan, Fu-Xiong
Format: Article
Language:English
Subjects:
Aerated
Aeration
Air flow
Discharge
Flow rate
Granular flow
Granular kinetic theory
Hopper
Hoppers
Outlets
Particle size
Sawdust
出口宽度
工业生产过程
放电率
数值模拟试验
料斗
曝气
木屑
空气流速
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Summary:This paper presents a numerical and experimental study of the discharge rate of sawdust from an aerated hopper as an important parameter in many industrial processes involving the handling of other granular materials. Numerical experiments are conducted by means of an Eulerian-Eulerian approach coupled with the kinetic theory of granular flow （KTGF）. Emphasis is given to the effects of particle size, hopper outlet width, hopper half angle, aeration height and air flow rate. The results show that the discharge rate is significantly affected by hopper outlet width, particle size and air flow rate, but is not sensitive to the hopper half angle and aeration height： increasing hopper outlet width or air flow rate increases discharge rate, while increasing particle size decreases discharge rate. Close agreement between numerical predictions and experimental results is obtained.
ISSN:1674-2001
2210-4291
DOI:10.1016/j.partic.2010.06.007