Criteria for Beverloo's scaling law

doi:10.1088/1674-1056/28/1/018101

	Criteria for Beverloo's scaling law
	Zhang, Sheng; Lin, Ping; Yang, Guanghui; Wan, Jiang-Feng; Tian, Yuan; Yang, Lei
刊名	CHINESE PHYSICS B
	2019
卷号	28 页码:018101
关键词	Beverloo's law orifice diameter hopper size discrete element method
ISSN号	1674-1056
DOI	10.1088/1674-1056/28/1/018101
英文摘要	Beverloo's scaling law can describe the flow rate of grains discharging from hoppers. In this paper, we show that the Beverloo's scaling law is valid for varying material parameters. The flow rates from a hopper with different hopper and orifice sizes (D, D-0) are studied by running large-scale simulations. When the hopper size is fixed, the numerical results show that Beverloo's law is valid even if the orifice diameter is very large and then the criteria for this law are discussed. To eliminate the effect of walls, it is found that the criteria can be suggested as D - D-0 >= 40d or D/D-0 >= 2. Interestingly, it is found that there is still a scaling relation between the flow rate and orifice diameter if D/D-0 is fixed and less than 2. When the orifice diameter is close to the hopper size, the velocity field changes and the vertical velocities of grains above the free fall region are much larger. Then, the free fall arch assumption is invalid and Beverloo's law is inapplicable.
资助项目	National Natural Science Foundation of China[11705256] ; National Natural Science Foundation of China[11605264]
WOS关键词	GRANULAR-MATERIALS ; FLOW ; SILO
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000456873000001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/67132]
专题	中国科学院近代物理研究所
作者单位	Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Sheng,Lin, Ping,Yang, Guanghui,et al. Criteria for Beverloo's scaling law[J]. CHINESE PHYSICS B,2019,28:018101.
APA	Zhang, Sheng,Lin, Ping,Yang, Guanghui,Wan, Jiang-Feng,Tian, Yuan,&Yang, Lei.(2019).Criteria for Beverloo's scaling law.CHINESE PHYSICS B,28,018101.
MLA	Zhang, Sheng,et al."Criteria for Beverloo's scaling law".CHINESE PHYSICS B 28(2019):018101.