Gas and powder flow characteristics of packed bed: A two-way coupled CFD-DEM study
文献类型：期刊论文
| 作者 | Wang, Jian1,2 ; Liu, Mingzong1; Lei, Mingzhun2; Wu, Qigang2; Wang, Kaisong1; Deng, Haishun1
|
| 刊名 | INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
 |
| 出版日期 | 2024-08-01 |
| 卷号 | 178 |
| 关键词 | Powder flow Packed bed Computational fluid dynamics Discrete element method Two-way coupling method |
| ISSN号 | 0301-9322 |
| DOI | 10.1016/j.ijmultiphaseflow.2024.104904 |
| 通讯作者 | Wang, Jian(wjfttt@mail.ustc.edu.cn) |
| 英文摘要 | A two-way coupled Computational Fluid Dynamics (CFD) and Discrete Element Method (DEM) calculation was performed to numerically investigate the gas and powder flow characteristics within a packed bed. The analysis and discussion focused on the effects of gas phase velocity, particle shape, and size on the flow behavior of the powders. The results revealed that the average absolute velocity of the powder increased with an increase in the inlet gas flow rate. Conversely, the average dimensionless velocity exhibited the opposite trend. Particle shape significantly impacted the flowability of the powders. A critical value of sphericity equal to 0.96 was observed. For powders with sphericity less than 0.96, the average velocity fluctuated around a progressively decreasing value over time, and the powders tended to accumulate in the inlet region. In contrast, powders with a sphericity greater than 0.96 exhibited average velocities fluctuating around a constant value throughout the simulation. Additionally, a smaller number of these particles remained within the fluid domain, indicating a higher flow rate through the packed bed and ultimately exiting the fluid domain. Regarding the influence of particle size, the flowability reached a minimum value at a radius of 0.14 mm, with the average powder velocity mirroring this trend. Powders with a radius exceeding 0.14 mm demonstrated increasing flowability and average velocity. The observed impact on flowability was likely due to a combination of mechanisms. The findings presented in this paper offer valuable insights into the dynamics of powders within a packed bed. This knowledge can be instrumental in the design and analysis of packed bed reactors. |
| WOS关键词 | PEBBLE BED ; PRESSURE-DROP ; PURGE GAS ; PACKING CHARACTERISTICS ; NUMERICAL-SIMULATION ; HEAT-TRANSFER ; COEFFICIENT ; PARTICLES ; MODEL |
| 资助项目 | Natural Science Research Project of Anhui Educational Committee, China[2022AH050825] ; Excellent Research and Innovation Team of Anhui Province, China[2022AH010052] ; Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology[2021yjrc51] ; Anhui Intelligent Mine Technology and Equipment Engi- neering Research Center[AIMTEERC202307] ; Medical Special Cultivation Project of Anhui University of Science and Technology[YZ2023H2C008] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001261866200001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Natural Science Research Project of Anhui Educational Committee, China ; Excellent Research and Innovation Team of Anhui Province, China ; Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology ; Anhui Intelligent Mine Technology and Equipment Engi- neering Research Center ; Medical Special Cultivation Project of Anhui University of Science and Technology |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/136890]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wang, Jian |
| 作者单位 | 1.Anhui Univ Sci & Technol, Sch Mech Engn, Huainan 232001, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jian,Liu, Mingzong,Lei, Mingzhun,et al. Gas and powder flow characteristics of packed bed: A two-way coupled CFD-DEM study[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2024,178. |
| APA | Wang, Jian,Liu, Mingzong,Lei, Mingzhun,Wu, Qigang,Wang, Kaisong,&Deng, Haishun.(2024).Gas and powder flow characteristics of packed bed: A two-way coupled CFD-DEM study.INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,178. |
| MLA | Wang, Jian,et al."Gas and powder flow characteristics of packed bed: A two-way coupled CFD-DEM study".INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 178(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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。