Experimental investigation of interparticle collision rate in particulate flow

Changfu You; Hailiang Zhao; Yi Cai; Haiying Qi; Xuchang Xu

doi:10.1016/j.ijmultiphaseflow.2004.05.009

Experimental investigation of interparticle collision rate in particulate flow

International Journal of Multiphase Flow ◽

10.1016/j.ijmultiphaseflow.2004.05.009 ◽

2004 ◽

Vol 30 (9) ◽

pp. 1121-1138 ◽

Cited By ~ 21

Author(s):

Changfu You ◽

Hailiang Zhao ◽

Yi Cai ◽

Haiying Qi ◽

Xuchang Xu

Keyword(s):

Experimental Investigation ◽

Particulate Flow ◽

Collision Rate ◽

Interparticle Collision

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Effect of spatial inhomogeneity and temporal fluctuation of particle distributions on interparticle collision rate in particulate flows

Powder Technology ◽

10.1016/j.powtec.2006.11.017 ◽

2007 ◽

Vol 172 (3) ◽

pp. 188-192 ◽

Cited By ~ 6

Author(s):

Changfu You ◽

Hailiang Zhao ◽

Xuchang Xu ◽

Delong Xu

Keyword(s):

Spatial Inhomogeneity ◽

Collision Rate ◽

Particulate Flows ◽

Temporal Fluctuation ◽

Particle Distributions ◽

Interparticle Collision

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Experimental investigation of interparticle collision in the upper dilute zone of a cold CFB riser

International Journal of Multiphase Flow ◽

10.1016/j.ijmultiphaseflow.2008.04.001 ◽

2008 ◽

Vol 34 (10) ◽

pp. 924-930 ◽

Cited By ~ 3

Author(s):

Xuecheng Wu ◽

Qinhui Wang ◽

Zhongyang Luo ◽

Mengxiang Fang ◽

Kefa Cen

Keyword(s):

Experimental Investigation ◽

Interparticle Collision

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DSMC Prediction of Particle Behavior in Gas-Particle Two-Phase Impinging Streams

Mathematical Problems in Engineering ◽

10.1155/2013/254082 ◽

2013 ◽

Vol 2013 ◽

pp. 1-11 ◽

Cited By ~ 2

Author(s):

Min Du ◽

Changsui Zhao ◽

Bin Zhou ◽

Yingli Hao

Keyword(s):

Particle Concentration ◽

Chemical Engineering ◽

Lagrangian Approach ◽

Particle Collision ◽

Collision Rate ◽

Two Phase ◽

Particle Behavior ◽

Transfer Processes ◽

Collision Zone ◽

Interparticle Collision

Devices with impinging streams have been employed in various fields of chemical engineering, as a means of intensifying heat and mass transfer processes. The particle behavior in gas-particle two-phase impinging streams (GPISs), which is of essential importance for the research of transfer processes, was simulated by an Eulerian-Lagrangian approach in this paper. Collisional interaction of particles was taken into account by means of a modified direct simulation Monte Carlo (DSMC) method based on a Lagrangian approach and the modified Nanbu method. A quantitative agreement was obtained between the predicted results and the experimental data in the literature. The particle motion behavior and the distributions of particle concentration and particle collision positions were presented reasonably. The results indicate that the particle distribution in GPIS can be divided into three zones: particle-collision zone, particle-jetting zone, and particle-scattering zone. Particle collisions occur mainly in the particle-collision zone, which obviously results in a few particles penetrating into the opposite stream. The interparticle collision rate and the particle concentration reach their maximum values in the particle-collision zone, respectively. The maximum value of the particle concentration increases with the increasing inlet particle concentration according to a logarithmic function. The interparticle collision rate is directly proportional to the square of local particle concentration.

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