中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 过程工程研究所
  3. 中国科学院过程工程研究所
Time-resolved particle-scale dynamics of a particle-laden jet

文献类型：期刊论文

作者Li, Qingzhan2; Zhu, Renshuai1,3; Wang, Wei1,2,3; Chen, Yanpei1; Li, Fei1; Furuhata, Tomohiko2
刊名PHYSICS OF FLUIDS
出版日期2023
卷号35期号:1页码:22
ISSN号1070-6631
DOI10.1063/5.0131425
英文摘要Particle-laden jet flow is important to both jet-related industry applications and transmission of the virus through violent expiratory events, such as coughing and sneezing. To help understand its dynamics from the particle level, we develop a time-resolved, three-dimensional (3D), particle tracking velocimetry method, coupled with particle image velocimetry measurement of gas flow, and perform experiments on a dilute particle-laden gas jet. The spatial distributions of velocity and fluctuating velocity of the gas and particles are obtained. It is found that the presence of particles significantly changes the gas turbulence and stretch the gas flow field to the downstream. The probability density function of axial particle velocity shows non-Gaussian distribution and deviates much from those of the spanwise velocities, indicating strong non-equilibrium and anisotropic states. A new drag model is derived based on the reconstructed particle trajectories and gas flow field near the ejector exit with particle Reynolds numbers between 30 and 300. It is found in better agreement with the experimental data than the standard single-particle drag model. A simple model relating the particle volume fraction with particle displacement is developed based on the self-similarity theory of jet, showing good agreement with the experimental measurement.
WOS关键词PREFERENTIAL CONCENTRATION ; IMAGE VELOCIMETRY ; FLUIDIZED-BED ; TURBULENCE ; FLOWS ; DRAG ; VELOCITY ; SIMULATION ; INFLUENZA ; MOTION
资助项目National Natural Science Foundation of China (NSFC)[21821005] ; National Natural Science Foundation of China (NSFC)[21625605] ; National Natural Science Foundation of China (NSFC)[22161142006] ; National Natural Science Foundation of China (NSFC)[51876212] ; National Natural Science Foundation of China (NSFC)[91834302]
WOS研究方向Mechanics ; Physics
语种英语
出版者AIP Publishing
WOS记录号WOS:000909716000009
资助机构National Natural Science Foundation of China (NSFC)
源URL[http://ir.ipe.ac.cn/handle/122111/56738]  
通讯作者Wang, Wei; Chen, Yanpei
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Gunma Univ, Div Mech Sci & Technol, 1-5-1 Tenjin Cho, Kiryu, Gunma 3768515, Japan
3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Qingzhan,Zhu, Renshuai,Wang, Wei,et al. Time-resolved particle-scale dynamics of a particle-laden jet[J]. PHYSICS OF FLUIDS,2023,35(1):22.
APA Li, Qingzhan,Zhu, Renshuai,Wang, Wei,Chen, Yanpei,Li, Fei,&Furuhata, Tomohiko.(2023).Time-resolved particle-scale dynamics of a particle-laden jet.PHYSICS OF FLUIDS,35(1),22.
MLA Li, Qingzhan,et al."Time-resolved particle-scale dynamics of a particle-laden jet".PHYSICS OF FLUIDS 35.1(2023):22.

入库方式： OAI收割

来源：过程工程研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。