CAS OpenIR
PR-DNS verification of the stability condition in the EMMS model
Cui, Haihang1,2; Chang, Qi1,4,5; Chen, Jianhua1; Ge, Wei1,2,3,4
2020-12-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume401Pages:9
AbstractThe energy-minimization multi-scale (EMMS) model has succeeded in describing the mesoscale structures in gas-solid fluidization by introducing a stability condition to complete the model, viz., the mass specific energy consumption for suspending and transporting the solids, N-st tends to be a minimum. However, direct verification of this condition is very limited so far. This work, therefore, monitors the evolution of N-st in particle-resolved direct numerical simulation (PR-DNS) of a small-scale fluidized bed. Compared with the earlier simulation study on this issue based on pseudo-particle modeling (PPM), this work is more comprehensive thanks to the higher computational efficiency of PR-DNS. As a result, the previously neglected acceleration effect is now included in the force balance and the fluidization system is simulated under different initial distributions. The simulation and analysis demonstrate that, the stability condition is satisfied in all the cases, which further verifies the EMMS model. With PR-DNS as a powerful tool, deeper understanding of the EMMS model and gas-solid fluidization can be achieved in the future.
KeywordFluidization Mesoscale structure Energy consumption Stability condition Particle-resolved direct numerical simulation
DOI10.1016/j.cej.2020.125999
Language英语
WOS KeywordGAS-SOLID FLOW ; DIRECT NUMERICAL-SIMULATION ; IMMERSED BOUNDARY METHOD ; PARTICLE SIMULATION ; CFD SIMULATION ; FLUIDIZED-BEDS ; CYLINDER ; SYSTEMS ; DRAG ; EXPANSIONS
Funding ProjectNational Natural Science Foundation of China (NSFC)[91834303] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences (CAS)[IAGM-2019-A13] ; Key Research Program of Frontier Science, CAS[QYZDJ-SSW-JSC029] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2019-A-02]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Science, CAS ; State Key Laboratory of Multiphase Complex Systems
WOS IDWOS:000569901400007
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42085
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Jianhua; Ge, Wei
Affiliation1.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 100049, Peoples R China
3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
4.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
5.Tianjin Univ, Sch Chem Engn, Tianjin 300072, Peoples R China
Recommended Citation
GB/T 7714
Cui, Haihang,Chang, Qi,Chen, Jianhua,et al. PR-DNS verification of the stability condition in the EMMS model[J]. CHEMICAL ENGINEERING JOURNAL,2020,401:9.
APA Cui, Haihang,Chang, Qi,Chen, Jianhua,&Ge, Wei.(2020).PR-DNS verification of the stability condition in the EMMS model.CHEMICAL ENGINEERING JOURNAL,401,9.
MLA Cui, Haihang,et al."PR-DNS verification of the stability condition in the EMMS model".CHEMICAL ENGINEERING JOURNAL 401(2020):9.
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