Knowledge Management System Of Institute of process engineering,CAS
| Bi-layer coarse-grained DPM of gas-solid systems with mesoscale heterogeneity resolved | |
Zhang, Yong1,3 ; Xu, Ji1,3; Chang, Qi1,3; Ge, Wei1,2,3
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| 2022-12-14 | |
| Source Publication | CHEMICAL ENGINEERING SCIENCE
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| ISSN | 0009-2509 |
| Volume | 263Pages:10 |
| Abstract | Coarse-grained discrete particle models (CGDPMs) that treat a group of real particles as a coarse-grained particle (CGP) are potentially capable of simulating industrial-scale gas-solid systems. However, the use of large CGPs decreases the spatial resolution for fluid computation, such that the detailed hydrodynam-ics of mesoscale structures cannot be captured accurately. In this study, the CGPs were coupled with gas flow at fine scale through weight function to describe the mesoscale heterogeneity in fluid velocity, solid concentration and interphase forces, which accurately reproduced experimental results of fluidization, in terms of bed expansion, bubble behaviors and voidage distribution. However, this extension incurred high computational cost due to large amounts of fluid cells. To speed up the computation, the gas flow was relaxed under frozen CGP configurations to evaluate the interphase forces on-the-fly. A bi-layer CGDPM thus proposed was demonstrated to be nearly 20 times faster than original fine-grid CGDPM for comparable accuracy. (c) 2022 Published by Elsevier Ltd. |
| Keyword | Coarse -grained DPM (CGDPM) EMMS-DPM Fluid resolution Mesoscale structures Multi -scale methods |
| DOI | 10.1016/j.ces.2022.118058 |
| Language | 英语 |
| WOS Keyword | DEM SIMULATIONS ; MODEL |
| Funding Project | National Natural Science Foundation of China[22008239] ; National Natural Science Foundation of China[92034302] ; National Key R&D Program of China[2021YFB1715500] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A03] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China ; National Key R&D Program of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences |
| WOS ID | WOS:000865427100014 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/54978 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Zhang, Yong; Ge, Wei |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Yong,Xu, Ji,Chang, Qi,et al. Bi-layer coarse-grained DPM of gas-solid systems with mesoscale heterogeneity resolved[J]. CHEMICAL ENGINEERING SCIENCE,2022,263:10. |
| APA | Zhang, Yong,Xu, Ji,Chang, Qi,&Ge, Wei.(2022).Bi-layer coarse-grained DPM of gas-solid systems with mesoscale heterogeneity resolved.CHEMICAL ENGINEERING SCIENCE,263,10. |
| MLA | Zhang, Yong,et al."Bi-layer coarse-grained DPM of gas-solid systems with mesoscale heterogeneity resolved".CHEMICAL ENGINEERING SCIENCE 263(2022):10. |
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