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题名:
A structure-dependent multi-fluid model (SFM) for heterogeneous gas-solid flow
作者: Hong, Kun1,2; Shi, Zhansheng1,2; Wang, Wei1; Li, Jinghai1
刊名: CHEMICAL ENGINEERING SCIENCE
出版日期: 2013-08-09
卷号: 99, 期号:99, 页码:191-202
关键词: Multiphase flow ; Fluidization ; Bubble ; Structure ; Mathematical modelling ; EMMS
收录类别: SCI
WOS记录号: WOS:000321964700024
通讯作者: Wang, W
文章类型: Article
英文摘要: For the heterogeneous gas solid flow in a fluidized bed, meso-scale structures, such as bubble and cluster, have significant effects on the hydrodynamics, mass/heat transfer and reaction rate. These structures can be described with certain kinds of bimodal probability density distribution of solids concentration, i.e., the dilute-dense two-phase structures. To keep the physical nature of these mesoscale structures in mathematical formulation, a structure-dependent, multi-fluid model (SFM) was proposed. Then, the SFM was reduced to the conventional two-fluid model (TFM) as well as the hydrodynamic equations of the bubble-based and cluster-based EMMS (energy-minimization multiscale) models by assuming different simplifications of structures. Thus, the SFM unifies these different models. A new version of bubble-based EMMS model was presented thereby and validated with comparison to experimental data. This bubble-based EMMS model was found to be applicable to wide flow regimes ranging from bubbling, turbulent to fast fluidization. (C) 2013 Elsevier Ltd. All rights reserved.
WOS标题词: Science & Technology ; Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
关键词[WOS]: DISCRETE PARTICLE SIMULATION ; CFD-SIMULATION ; RISER FLOWS ; NUMERICAL-SIMULATION ; MESOSCALE STRUCTURES ; PARTICULATE FLOWS ; BUBBLE DIAMETER ; SUBGRID MODEL ; DRAG MODELS ; BED
语种: 英语
Citation statistics:
内容类型: 期刊论文
版本: 出版稿
URI标识: http://ir.ipe.ac.cn/handle/122111/1642
Appears in Collections:多相复杂系统国家重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Proc Engn, EMMS Grp, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Hong, Kun,Shi, Zhansheng,Wang, Wei,et al. A structure-dependent multi-fluid model (SFM) for heterogeneous gas-solid flow[J]. CHEMICAL ENGINEERING SCIENCE,2013,99(99):191-202.
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