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Investigation of the characteristics and mechanisms of the layer inversion in binary liquid-solid fluidized beds with coarse particles
Ren WL(任万龙); Zhang Y(张岩); Zhang XH(张旭辉); Lu XB(鲁晓兵)
通讯作者Zhang, Xu-Hui([email protected])
发表期刊PHYSICS OF FLUIDS
2022-10-01
卷号34期号:10页码:15
ISSN1070-6631
摘要This paper adopts an optimized Euler-Lagrange method proposed in our previous work to study the characteristics and formation mechanisms of layer inversion in binary liquid-solid fluidized beds (LSFBs) with coarse particles. The LSFBs are formed in a cylindrical pipe with a diameter of 50 mm and a length of 0.6 m and consist of two species of coarse particles with different sizes: 6 mm glass spheres (species 1) and 10 mm glass spheres (species 2) with the particle density of 2600 kg / m 3. First, the characteristics of the layer inversion of LSFBs with coarse particles are qualitatively analyzed. The positions of species 1 and species 2 are converted during layer inversion. Second, the changes in the trajectory and volume fraction of two species of particles are quantitatively investigated. Finally, the formation mechanisms of layer inversion with coarse particles are analyzed. The results show that the relative magnitude of the fluid-solid interaction force and the gravity is the main reason for determining the layer inversion of binary coarse particles of different sizes. The collision force is to balance the net force of the particle-fluid interaction force and the net gravity, so that the fluidized bed is in relative equilibrium. In addition, through the analysis of the evolution of the network of contact forces, the constraint of the wall on coarse particles is discussed during the layer inversion. Published under an exclusive license by AIP Publishing.
DOI10.1063/5.0111157
收录类别SCI ; EI
语种英语
WOS记录号WOS:000885877600005
关键词[WOS]NUMERICAL-SIMULATION ; DEM-CFD ; FLOW ; SEGREGATION ; MODEL ; PREDICTION ; MIXTURES ; VELOCITY ; BEHAVIOR
WOS研究方向Mechanics ; Physics
WOS类目Mechanics ; Physics, Fluids & Plasmas
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; [XDA22000000] ; [12132018] ; [2017027]
项目资助者Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences
论文分区一类/力学重要期刊
力学所作者排名1
RpAuthorZhang, Xu-Hui
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/91039
专题流固耦合系统力学重点实验室
推荐引用方式
GB/T 7714
Ren WL,Zhang Y,Zhang XH,et al. Investigation of the characteristics and mechanisms of the layer inversion in binary liquid-solid fluidized beds with coarse particles[J]. PHYSICS OF FLUIDS,2022,34,10,:15.Rp_Au:Zhang, Xu-Hui
APA 任万龙,张岩,张旭辉,&鲁晓兵.(2022).Investigation of the characteristics and mechanisms of the layer inversion in binary liquid-solid fluidized beds with coarse particles.PHYSICS OF FLUIDS,34(10),15.
MLA 任万龙,et al."Investigation of the characteristics and mechanisms of the layer inversion in binary liquid-solid fluidized beds with coarse particles".PHYSICS OF FLUIDS 34.10(2022):15.
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