American Journal of Applied Sciences

Modeling of Particle Separation in Bends of Rectangular Cross-section

Bingtao Zhao

DOI : 10.3844/ajassp.2005.394.396

American Journal of Applied Sciences

Volume 2, Issue 1

Pages 394-396


A new theoretical model for predicting particle separation efficiency in bends is developed based on the investigation of flow pattern, the critical particle size separation theory and the boundary layer separation theory. The radial particle concentration gradient, instead of the usually assumed uniform radial particle concentration within the bends, is considered in this mathematical model. The local particle concentration and the separation efficiency can be calculated on the base of a time-of-flight model in terms of the particle size distribution of the feed. The effects of curvature ratio and bend angle on the separation efficiency in bends are also evaluated by the model.


© 2005 Bingtao Zhao. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.