Characterization of the granular jet in a coaxial gas stream

被引：19
|
作者：
Liu, Haifeng [1 ]
Cao, Wenguang [1 ]
Xu, Jianliang [1 ]
Li, Weifeng [1 ]
Guo, Xiaolei [1 ]
Sun, Zhigang [1 ]
机构：
[1] E China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat, Shanghai 200237, Peoples R China
来源：
POWDER TECHNOLOGY | 2012年 / 225卷
基金：
中国国家自然科学基金;
关键词：
Pulverized coal gasification; Coaxial jet; Granular jet; Dispersion; Gas-particle flow; 3-DIMENSIONAL VORTEX SIMULATION; PULVERIZED COAL; FLOW; ATOMIZATION; PARTICLES; INJECTION;
D O I：
10.1016/j.powtec.2012.04.011
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The granular jet can behave macroscopically like a liquid jet and its dispersion process is similar to the break-up of the liquid jet by an annular air jet. In this paper, the particle dispersion characteristics of a granular jet by an annular air jet, such as the undisturbed length, the dispersion length and the dispersion angle, have been investigated experimentally with a high-speed camera. The results showed that the air jet velocity and granular jet mass flux are the main influencing factors on the undisturbed length and dispersion length of the granular jet. The particle diameter has few effects on the undisturbed length and dispersion length of the granular jet. The empirical equations of the undisturbed length, dispersion length and dispersion angle are obtained. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：206 / 213
页数：8
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