文献类型：期刊文献

英文题名：DEM study of liquid-like granular film from granular jet impact

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：2018

卷号：336

起止页码：199

外文期刊名：POWDER TECHNOLOGY

收录：;EI(收录号：20182405298710);WOS:【SCI-EXPANDED(收录号:WOS:000441491300020)】；

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; Jet impact; Liquid-like granular film; Discrete element method; Collision dynamic

摘要：Dynamic behaviors of a dense granular jet impacting on a circular target are numerically studied by Discrete Element Method (DEM), and the simulation results are compared with experimental data in our previous paper. Firstly, effects of solid fractions of granular jet (x(p)) and ratios of jet diameter to particle diameter (D/d) on the flow pattern of granular jet impact are investigated. Results show that increasing x(p) and D/d both increase the interparticle collision frequencies, which decrease the interparticle collision forces and relative velocities, and give rise to the liquid-like granular film, consequently. Secondly, liquid-like wave structures on the granular film are simulated by a granular jet impact with pulsation. Results indicate that the granular wave is primarily determined by the pulsation amplitude and Strouhal number (St) of granular jets. The granular jet impact with pulsation displays distinct wave structures as the optimal St is in the range of 0.2-0.8 (C) 2018 Elsevier B.V. All rights reserved.