Wall friction characteristics of pulverized coal by experiment and numerical simulation

被引：0
|
作者：
Zhang Y. [1 ]
Shen X. [1 ]
Tang X. [1 ]
Yuan Z. [1 ]
机构：
[1] School of Energy and Environment, Southeast University
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2010年 / 40卷 / 01期
关键词：
Discrete element method; Kinematic wall friction; Pulverized coal;
D O I：
10.3969/j.issn.1001-0505.2010.01.025
中图分类号：
学科分类号：
摘要：
Effects of particle size and wall material on wall friction characteristics of pulverized coal were investigated by means of Jenike shear test. The wall materials include stainless steel, carbon steel and epoxy. Combining Jenike's theory of flow of particulate solids, the variation of friction coefficient of pulverized coal with different particle size was studied. Results show that the wall friction force increases with the increasing in roughness and stiffness of wall materials, and also increases with the increasing in fine particle content of coal under same moisture capacity. On the other hand, the friction characteristics of pulverized coal were numerically simulated using the discrete element method (DEM). Comparing the results of the simulation and the experiment, reasonable agreements are obtained.
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页码：133 / 138
页数：5
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