Experimental measurement of the normal coefficient of restitution of micro-particles impacting on plate surface in different humidity

被引：28

作者：

Dong, Ming ^{[1
]}

Mei, Yaokui ^{[1
]}

Li, Xue ^{[1
]}

Shang, Yan ^{[1
]}

Li, Sufen ^{[1
]}

机构：

[1] Dalian Univ Technol, Minist Educ, Key Lab Ocean Energy Utilizat & Energy Conservat, Sch Energy & Power Engn, 2 Linggong Rd, Dalian 116024, Liaoning, Peoples R China

来源：

POWDER TECHNOLOGY | 2018年 / 335卷

基金：

中国国家自然科学基金;

关键词：

Normal coefficient of restitution; Critical capture velocity; Relative humidity; Normal impaction; Micro-particle; ATOMIC-FORCE MICROSCOPY; SMALL LATEX SPHERES; CAPILLARY FORCES; RELATIVE-HUMIDITY; LIQUID BRIDGE; FLAT SURFACE; PARTICLES; ADHESION; ENERGY;

D O I：

10.1016/j.powtec.2018.05.022

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The coefficient of restitution is widely used to characterize the energy loss rate in numerical simulations of discrete element modelling. The accurate input parameters can obtain the accurate simulation results for discrete element modelling. The determination of the coefficient of restitution for the single component particle is the relatively simple process, however, when considering multicomponent particles like fly-ash and humidity environment, the unpredictable property of particle after impact makes the analysis of the coefficient of restitution more complicated. This paper presents an experimental setup to determine normal coefficient of restitution using the high-speed digital camera in different humidity condition. The normal coefficient of restitution was measured for fly-ash micro-particles with different relative velocities and humidity, with a focus on collision velocities below 7 m/s. Therefore, this work focused on the effect of humidity and incident velocity on the normal coefficient of restitution. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：250 / 257

页数：8

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