Particle tracking velocimetry study of the nonequilibrium characteristics of a fluidized bed
文献类型：期刊论文
| 作者 | Zhu, Renshuai1,2; Chen, Yanpei1,2; Wang, Wei1,2 |
| 刊名 | AICHE JOURNAL
 |
| 出版日期 | 2023-01-26 |
| 页码 | 11 |
| 关键词 | fluidization mesoscale structures nonequilibrium particle tracking velocimetry (PTV) velocity probability density distribution |
| ISSN号 | 0001-1541 |
| DOI | 10.1002/aic.18043 |
| 英文摘要 | The nonequilibrium characteristic of fluidization is closely related to the mesoscale structures. To help uncover this relationship, we performed a particle-level experiment in a bubbling fluidized bed making particle tracking velocimetry (PTV) measurements. We found a large Knudsen number not only in bubbles or over bubble interfaces, but also in the dense emulsion where various banded structures exist, indicating a pervasive violation of the local equilibrium. Analysis of these banded structures identified stretching, compression, or shearing between particles. Non-Gaussian velocity distributions were found throughout the bed, including in the dense emulsion with a small Knudsen number. In future work, we expect that the nonequilibrium characteristic will act as a local criterion for the assessment of various models of bubbling fluidized beds. |
| WOS关键词 | GAS-SOLID FLOW ; MULTISCALE CFD ; KINETIC-THEORY ; 2-FLUID MODEL ; VELOCITY DISTRIBUTION ; MOMENT METHOD ; DRAG MODEL ; SIMULATION ; GELDART ; SCALE |
| 资助项目 | National Natural Science Foundation of China[21821005] ; National Natural Science Foundation of China[21625605] ; National Natural Science Foundation of China[22161142006] ; National Natural Science Foundation of China[51876212] ; National Natural Science Foundation of China[91834302] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000920344800001 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/56699]  |
| 通讯作者 | Wang, Wei |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Renshuai,Chen, Yanpei,Wang, Wei. Particle tracking velocimetry study of the nonequilibrium characteristics of a fluidized bed[J]. AICHE JOURNAL,2023:11. |
| APA | Zhu, Renshuai,Chen, Yanpei,&Wang, Wei.(2023).Particle tracking velocimetry study of the nonequilibrium characteristics of a fluidized bed.AICHE JOURNAL,11. |
| MLA | Zhu, Renshuai,et al."Particle tracking velocimetry study of the nonequilibrium characteristics of a fluidized bed".AICHE JOURNAL (2023):11. |
入库方式： OAI收割
来源：过程工程研究所
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