Investigation of particle size impact on dense particulate flows in a vertical pipe

doi:10.1063/5.0157609

IMECH-IR > 流固耦合系统力学重点实验室

	Investigation of particle size impact on dense particulate flows in a vertical pipe
	Ren WL(任万龙); Zhang XH(张旭辉); Zhang Y(张岩); Li P(李鹏); Lu XB(鲁晓兵)
发表期刊	PHYSICS OF FLUIDS
	2023-07-01
卷号	35 期号:7 页码:73302
ISSN	1070-6631
摘要	In this work, a semi-resolved computational fluid dynamics-discrete element method is employed to study the effects of fluid-particle and particle-particle/wall interactions on particle mixing and segregation behaviors and particle dynamics with different particle sizes in a vertical pipe. There are two species of particles with the same density in the vertical pipe: d(1) = 10 (species 1) and d(2) = 2-7 mm (species 2), and species 2 contains both fine and coarse particles. The Stokes number St(p) is introduced to characterize the effects of different particle sizes on particle dynamics. First, the particle mixing and segregation behaviors with different size ratios are qualitatively analyzed. By comparing with smaller size ratios, obvious granular plugs and stronger contact force networks occur at larger size ratios. Second, after the segregation of species 1 and 2, the differences in dynamic characteristics between fine and coarse particles are explored. The normalized autocorrelation length scale, which is the ratio of propagation length of particle velocity fluctuations and particle diameter, is significantly different from fine to coarse particles. One notable feature is that two different flow regimes are found through the radial distribution function. Furthermore, the hydrodynamic stress and collision stress are defined to study the mechanism for the differences between fine and coarse particles. The results imply that the reason for the differences is that the collision effects go beyond the hydrodynamic effects with the increase in the Stokes number.
DOI	10.1063/5.0157609
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001023449800013
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
项目资助者	National Natural Science Foundation of China [12132018] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA22000000] ; Youth Innovation Promotion Association of Chinese Academy of Sciences [2017027]
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Zhang, Y (corresponding author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
引用统计	被引频次：8[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/311007/92590
专题	流固耦合系统力学重点实验室
作者单位	1.{Ren, Wan-Long, Zhang, Xu-Hui, Zhang, Yan, Li, Peng, Lu, Xiao-Bing} Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.{Ren, Wan-Long, Zhang, Xu-Hui, Lu, Xiao-Bing} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ren WL,Zhang XH,Zhang Y,et al. Investigation of particle size impact on dense particulate flows in a vertical pipe[J]. PHYSICS OF FLUIDS,2023,35,7,:73302.
APA	任万龙,张旭辉,张岩,李鹏,&鲁晓兵.(2023).Investigation of particle size impact on dense particulate flows in a vertical pipe.PHYSICS OF FLUIDS,35(7),73302.
MLA	任万龙,et al."Investigation of particle size impact on dense particulate flows in a vertical pipe".PHYSICS OF FLUIDS 35.7(2023):73302.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Jp2023A193.pdf（2756KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载