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Study on Liquid‐Like Behaviors of Dense Granular Impinging Jets
Author(s) -
Shi ZheHang,
Li WeiFeng,
Wang Yue,
Liu HaiFeng,
Wang FuChen
Publication year - 2019
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.16208
Subject(s) - jet (fluid) , granular material , discrete element method , mechanics , particle (ecology) , collision , materials science , flow (mathematics) , physics , composite material , geology , oceanography , computer security , computer science
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. © 2018 American Institute of Chemical Engineers AIChE J , 65: 49–63, 2019