Application of incomplete similarity theory for estimating maximum shear layer thickness of granular flows in rotating drums

被引：18

作者：

Cheng, Nian-Sheng ^{[1
]}

Zhou, Qi ^{[1
]}

Tan, Soon Keat ^{[1
]}

Zhao, Kuifeng ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore

来源：

CHEMICAL ENGINEERING SCIENCE | 2011年 / 66卷 / 12期

关键词：

Granular flow; Rotating drum; Shear layer; Scaling; Incomplete similarity; Rolling regime; ROTARY KILNS; MOTION; CYLINDERS; SOLIDS; SEGREGATION;

D O I：

10.1016/j.ces.2011.03.050

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Granular flow in a rotating drum provides a convenient system for investigating mixing, segregation and general properties of granular materials. This study is concerned with the maximum thickness of the flowing surface layer observed at the rolling regime. A scaling relation is first derived with the consideration of incomplete similarity associated with the drum-particle size ratio and the Froude number. Calibration is then carried out with published laboratory data, which were collected for the case of rotating drums half-filled with glass beads. The scaling relation is also compared with other kinds of datasets, showing good agreement and possibilities of the proposed approach to be further extended to more complex cases. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2872 / 2878

页数：7

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