CAS OpenIR
Experiments and CFD-DEM simulations of cohesive particles sedimentation in stilled fluid
Lu, Runrun1; Zhang, Lin1; Ricoux, Philippe2; Wang, Limin1
2019-11-01
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume356Pages:222-230
AbstractParticle agglomeration is observed in slurry loop reactors due to the presence of cohesive force between the swollen polyethylene (PE) particles, which has direct impact on the hydrodynamics predictions. However, a qualitative study of the cohesive forces in the suspensions of swollen PE particle at the microscopic level is still lacking. In this study, a simulation contrast experiment method for quantification of cohesive force is proposed. The simulation method is based on a coupled computational fluid dynamics and discrete element method (CFD-DEM) approach, which have been used to study and explain the effects of cohesion on fluidization of particles. The DEM allows the dynamic simulation of the solid phase motion by tracking individual particles, whereas a CFD algorithm is commonly used to simulate the flow field of the continuous fluid phase. The swollen PE particles, initially arranged within a cylinder region in a quiescent hot dodecane, are made to fall, and their sedimentation induces the liquid flow around them. The interactions between the particle motion and the liquid flow are favorably compared with the experimental data, demonstrating the value of the cohesive energy density for the swollen PE particles is between 4000 J/m(3) and 5000 J/m(3). (C) 2019 Published by Elsevier B.V.
KeywordCohesive force CED-DEM Coefficient quantization Correlation method
DOI10.1016/j.powtec.2019.05.018
Language英语
WOS KeywordNUMERICAL-SIMULATION ; SURFACE-ENERGY ; GAS ; ADHESION ; MODEL ; FLOW ; CONTACT ; VORTEX ; SPHERE ; BED
Funding ProjectNational Natural Science Foundation of China[51776212] ; National Natural Science Foundation of China[91434113] ; National Key R&D Program of China[2018YFB1500902] ; Chinese Academy of Sciences[QYZDB-SSW-SYS029] ; National Key Basic Research Program of China[2015CB251402]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; National Key R&D Program of China ; Chinese Academy of Sciences ; National Key Basic Research Program of China
WOS IDWOS:000504777100023
PublisherELSEVIER
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38564
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Limin
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.TOTAL Sci Div, Data Proc & Modeling, 24 Cours Michelet La Def 10, F-92069 Paris, France
Recommended Citation
GB/T 7714
Lu, Runrun,Zhang, Lin,Ricoux, Philippe,et al. Experiments and CFD-DEM simulations of cohesive particles sedimentation in stilled fluid[J]. POWDER TECHNOLOGY,2019,356:222-230.
APA Lu, Runrun,Zhang, Lin,Ricoux, Philippe,&Wang, Limin.(2019).Experiments and CFD-DEM simulations of cohesive particles sedimentation in stilled fluid.POWDER TECHNOLOGY,356,222-230.
MLA Lu, Runrun,et al."Experiments and CFD-DEM simulations of cohesive particles sedimentation in stilled fluid".POWDER TECHNOLOGY 356(2019):222-230.
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