文献类型：期刊文献

英文题名：Study on Liquid-Like Behaviors of Dense Granular Impinging Jets

作者：Shi, Zhe-Hang[1,2];Li, Wei-Feng[1,2];Wang, Yue[1,2];Liu, Hai-Feng[1,2];Wang, Fu-Chen[1,2]

机构：[1]East China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2019

卷号：65

期号：1

起止页码：49

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20183905861156);WOS:【SCI-EXPANDED(收录号:WOS:000454632100006)】；

基金：This study was supported by the National Natural Science Foundations of China (91434130) and (21776072) and the Fundamental Research Funds for the Central Universities (WB1516016).

语种：英文

外文关键词：dense granular jet; impinging jets; liquid-like granular sheet; flow regime; discrete element method

摘要：Particle dynamic behaviors of dense granular impinging jets are experimentally studied by a high-speed camera and numerically simulated using discrete element method (DEM). Effects of the granular jet velocity, impinging angle, and solid fraction of the granular jet on the flow patterns and interparticle collision are investigated. Results show that as the solid fraction of the granular jet (x(p)) increases, three patterns, that is, the penetrating pattern, diffuse pattern, and thin, liquid-like granular sheet display in turns. The shape and velocity of the granular sheet have been characterized and compared with the liquid sheet. An increase in the impinging angle obviously enlarges the granular sheet and decreases the sheet velocity. The flow patterns and sheet velocity are successfully predicted by DEM simulation. The simulation results further reveal that rising x(p) increases the interparticle collision frequencies, which decreases interparticle collision forces and relative velocities, and consequently gives rise to the granular sheet. (c) 2018 American Institute of Chemical Engineers AIChE J, 65: 49-63, 2019