Role of mesoscale structure in gas-solid fluidization: Comparison between continuum and discrete approaches
文献类型：期刊论文
| 作者 | Yang, Lina2,3; Han, Caixia2,3,4; Xu, Ji2,3,4; Lu, Bona2,3,4; Xu, Youhao1; Wang, Wei2,3,4; Ge, Wei2,3,4 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2023-02-15 |
| 卷号 | 454页码:12 |
| ISSN号 | 1385-8947 |
| 关键词 | Fluidization Mesoscale structure TFM DPM |
| DOI | 10.1016/j.cej.2022.139979 |
| 英文摘要 | The coarse-grained discrete particle model (DPM) is fast growing into a powerful tool and a useful counterpart of the widely used two-fluid model (TFM) in simulation of large-scale reactors. This work aims to study the role of mesoscale modeling in both TFM and DPM approaches to understand the advantage and disadvantage of each approach for further development. Both simulation approaches with and without considering mesoscale structures in drag modeling are systematically investigated through simulations of an industrial diameter-transformed fluidized bed reactor with complex reactions. It is found that considering mesoscale drag can obviously improve the prediction in solid concentration for both approaches, and the effect of mesoscale drag for TFM modeling is more significant than for DPM approach. Besides, the DPM approach can reveal local heterogeneous structures without using mesoscale drag because it can distinguish different parcels in each fluid cell, but it overestimates the accumulation of solid particles below the distributor, as the large coarse-grain ratio may over-enhance the particle collision. For reaction, the coke content can be better predicted by both approaches with mesoscale drag, and the DPM simulation can capture more heterogeneous distribution of coke content than TFM modeling. The predicted temperature and product distribution still have obvious deviation from industrial data, suggesting a need of mesoscale heat and mass transfer modeling. The underlying mechanisms are further analyzed together with proposing future work. |
| WOS关键词 | DIRECT NUMERICAL-SIMULATION ; PARTICLE METHOD ; CFD SIMULATION ; HEAT-TRANSFER ; DRAG MODEL ; BED ; FLOW ; HYDRODYNAMICS ; VALIDATION ; EXTENSION |
| 资助项目 | Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A03] ; National Natural Science Foundation of China[22078330] ; National Natural Science Foundation of China[22078331] ; National Natural Science Foundation of China[92034302] ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21030700] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2019050] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE SA |
| WOS记录号 | WOS:000916010700003 |
| 资助机构 | Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; National Natural Science Foundation of China ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association, Chinese Academy of Sciences |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/56933]  |
| 通讯作者 | Xu, Ji; Lu, Bona |
| 作者单位 | 1.Sinopec, Res Inst Petr Proc, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Lina,Han, Caixia,Xu, Ji,et al. Role of mesoscale structure in gas-solid fluidization: Comparison between continuum and discrete approaches[J]. CHEMICAL ENGINEERING JOURNAL,2023,454:12. |
| APA | Yang, Lina.,Han, Caixia.,Xu, Ji.,Lu, Bona.,Xu, Youhao.,...&Ge, Wei.(2023).Role of mesoscale structure in gas-solid fluidization: Comparison between continuum and discrete approaches.CHEMICAL ENGINEERING JOURNAL,454,12. |
| MLA | Yang, Lina,et al."Role of mesoscale structure in gas-solid fluidization: Comparison between continuum and discrete approaches".CHEMICAL ENGINEERING JOURNAL 454(2023):12. |
入库方式： OAI收割
来源：过程工程研究所
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