Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying

doi:10.1103/PhysRevFluids.9.034303

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying
	Zhang, Yan; Qiao, Ji-Yan; Ren, Wan -Long; Zhang, Xu-Hui; Li, Peng; Lu, Xiao-Bing
刊名	PHYSICAL REVIEW FLUIDS
	2024-03-08
卷号	9 期号:2 页码:24
ISSN号	2469-990X
DOI	10.1103/PhysRevFluids.9.034303
通讯作者	Zhang, Xu-Hui(zhangxuhui@imech.ac.cn)
英文摘要	In this paper, we investigate the concentration instabilities that arise in vertical dense particulate flows during hydraulic conveying. The widely used two-fluid model for dense particulate flows is employed, and existing closure relations for drag correlation, stress tensors, etc., found in the literature are utilized. The ratio between the pipe diameter and particle size should be greater than 60 in this model. Then, an investigation is conducted to analyze the linear stability of the two-fluid model in a homogeneous and bounded pipe to determine the growth rates, frequency, and propagation velocity of small disturbances. Results show that the vertical dense particulate flows in hydraulic conveying exhibit instability across a broad spectrum of controlling parameters. We also obtain a fully nonlinear transient numerical solution for the two-fluid system using the finite difference method. The numerical solution of the model shows a high level of concordance with the linear stability analysis conducted, accurately capturing the corresponding growth rates in the region of wave formation. In addition, it has been found that small disturbances transform into saturation waves with finite amplitudes when the nonlinear effect becomes dominant. The saturation waves are asymmetrical due to the imbalance of inertia, wall shear stress, particle pressure, and particle viscosity mechanisms. The instable mode corresponds to plug flow or slug flow.
资助项目	National Natural Science Foundation of China[12302516] ; National Natural Science Foundation of China[12132018]
WOS关键词	WAVES ; INSTABILITIES ; FLUIDIZATION ; PREDICTION ; SIMULATION ; TRANSPORT ; VELOCITY ; MODELS
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:001187637700001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94854]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Zhang, Xu-Hui
作者单位	Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yan,Qiao, Ji-Yan,Ren, Wan -Long,et al. Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying[J]. PHYSICAL REVIEW FLUIDS,2024,9(2):24.
APA	Zhang, Yan,Qiao, Ji-Yan,Ren, Wan -Long,Zhang, Xu-Hui,Li, Peng,&Lu, Xiao-Bing.(2024).Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying.PHYSICAL REVIEW FLUIDS,9(2),24.
MLA	Zhang, Yan,et al."Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying".PHYSICAL REVIEW FLUIDS 9.2(2024):24.