Effect of blade tilt angle on fluid flow characteristics in spray-blowing agitation composite process:a simulation

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外文摘要：Aiming at the paddle tilt angle of the spray-blowing agitation composite process,the four-blade stirring and blowing composite desulfurization agitator was chosen as the research object,and the computational fluid dynamics numerical simulation was used to investigate the changes in flow field velocity,turbulent kinetic energy magnitude,and distribution caused by the blade tilt angle.Furthermore,the impact of blade tilt angle on the flow fragmentation behavior of individual bubbles and the coalescence process of multiple bubbles at different positions was studied.Under the same stirring and blowing process parameters,with the increase in the blade tilt angle of the agitator,the velocity of the flow field and the average turbulent kinetic energy inside the agitator decreased,and the bubble fragmentation speed decreased while the merging speed accelerated.The turbulent kinetic energy at the agitator bottom was greater when the blade tilt angle was 3.2°compared to when it was 13.2°,while the turbulent kinetic energy at the agitator upper part was relatively smaller.The results for single bubbles represented the state and trajectory of the bubble fragmentation process,and the results for multiple bubbles illustrated the state and trajectory of the bubble aggregation process.

外文关键词：

Blade tilt angleNumerical simulationStirringSpray-blowingBubble fragmentationBubble aggregation

作者：

Chao Lv、Hai-wei Zhang、Tao Yang、Hong-liang Zhao、Zhao-xiang Ji

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作者单位：

School of Control Engineering,Northeastern University at Qinhuangdao,Qinhuangdao 066000,Hebei,China

State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,Yunnan,China

School of Metallurgy and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China

基金：

National Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesDevelopment Fund of State Key Laboratory for Clean Utilization of Complex Nonferrous Metal ResourcesScientific Research Fund Project of Northeastern University at Qinhuangdao

项目编号：

51904069N2223026CNMRCUKF2302XNY201808

出版年：

2024

DOI：

10.1007/s42243-024-01204-7

钢铁研究学报(英文版)

钢铁研究总院

钢铁研究学报(英文版)

CSTPCD

影响因子：0.584

ISSN：1006-706X

年,卷(期)：2024.31(9)