Knowledge Management System Of Institute of process engineering,CAS
| Scale and structure dependent drag in gas-solid flows | |
| Liu, Xiaowen1,2; Ge, Wei1,2; Wang, Limin1 | |
| 2019-12-19 | |
| Source Publication | AICHE JOURNAL
 |
| ISSN | 0001-1541 |
| Pages | 13 |
| Abstract | Drag 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. |
| Keyword | direct numerical simulation drag correlation fluidization gas-solid flow structure-dependent drag |
| DOI | 10.1002/aic.16883 |
| Language | 英语 |
| WOS Keyword | DIRECT NUMERICAL-SIMULATION ; LATTICE-BOLTZMANN SIMULATIONS ; GRANULAR TEMPERATURE ; BIDISPERSE ARRAYS ; PAST MONODISPERSE ; 2-FLUID MODELS ; CFD SIMULATION ; FLUIDIZED-BEDS ; STOKES NUMBER ; FORCE |
| Funding Project | Chinese 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 Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | Chinese 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 ID | WOS:000503251500001 |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/38623 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Limin |
| 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, 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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