CAS OpenIR
Scale and structure dependent drag in gas-solid flows
Liu, Xiaowen1,2; Ge, Wei1,2; Wang, Limin1
2019-12-19
Source PublicationAICHE JOURNAL
ISSN0001-1541
Pages13
AbstractDrag plays a crucial role in hydrodynamic modeling and simulations of gas-solid flows, which is significantly affected by particle Reynolds number, solid volume fraction, heterogeneity, granular temperature, particle-fluid density ratio, and so on. To clarify and quantify the multiscale effects of these factors, large-scale particle-resolved direct numerical simulations of gas-solid flows with up to 115,200 freely moving particles are conducted. Both domain-averaged kinetic properties and local averaged dimensionless drag are sampled and analyzed. It is revealed that the complex scale-dependence of drag is attributed to the multiscale effects of heterogeneous structures and particle fluctuating velocity. The granular temperature and the scalar variance of solid volume fraction are also found to be scale-dependent. On account of these, a new drag correlation as the function of Froude number is proposed with consideration of scale-dependence.
Keyworddirect numerical simulation drag correlation fluidization gas-solid flow structure-dependent drag
DOI10.1002/aic.16883
Language英语
WOS KeywordDIRECT NUMERICAL-SIMULATION ; LATTICE-BOLTZMANN SIMULATIONS ; GRANULAR TEMPERATURE ; BIDISPERSE ARRAYS ; PAST MONODISPERSE ; 2-FLUID MODELS ; CFD SIMULATION ; FLUIDIZED-BEDS ; STOKES NUMBER ; FORCE
Funding ProjectChinese Academy of Sciences[QYZDB-SSW-SYS029] ; Chinese Academy of Sciences[QYZDJ-SSW-JSC029] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A03] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; National Key R&D Program of China[2018YFB1500902] ; National Natural Science Foundation of China[51776212] ; National Natural Science Foundation of China[91834303] ; National Natural Science Foundation of China[91434113] ; Science Challenge Project[TZ2016001]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationChinese Academy of Sciences ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; National Key R&D Program of China ; National Natural Science Foundation of China ; Science Challenge Project
WOS IDWOS:000503251500001
PublisherWILEY
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38623
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.Univ Chinese Acad Sci, Sch Chem Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xiaowen,Ge, Wei,Wang, Limin. Scale and structure dependent drag in gas-solid flows[J]. AICHE JOURNAL,2019:13.
APA Liu, Xiaowen,Ge, Wei,&Wang, Limin.(2019).Scale and structure dependent drag in gas-solid flows.AICHE JOURNAL,13.
MLA Liu, Xiaowen,et al."Scale and structure dependent drag in gas-solid flows".AICHE JOURNAL (2019):13.
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