New explicit formula for inertial lift in confined flows

doi:10.1063/5.0168474

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	New explicit formula for inertial lift in confined flows
	Su, Jinghong 2,3; Zheng, Xu 1; Hu, Guoqing 3
刊名	PHYSICS OF FLUIDS
	2023-09-01
卷号	35 期号:9 页码:8
ISSN号	1070-6631
DOI	10.1063/5.0168474
通讯作者	Hu, Guoqing(ghu@zju.edu.cn)
英文摘要	Inertial migration has proven effective for high-throughput manipulation of tiny particles in confined flows. However, complex and even controversial relationships between hydrodynamic forces and flow conditions hinder the development of an explicit formula for inertial lift acting on finite-sized particles at Reynolds numbers in the hundreds. Herein, we reveal the different scaling laws for shear gradient-induced inertial lift and wall-induced inertial lift by separating the contributions of pressure stress and viscous stress. A direct result of this treatment is a new explicit formula for the total inertial lift, valid for Reynolds numbers up to 400 and particle blockage ratios up to 0.25. This study provides an alternative way to understand inertial lift, thereby greatly facilitating the prediction of particle migration in practical microfluidic applications.
资助项目	Natural Science Foundation of China[12272345] ; Natural Science Foundation of China[11832017] ; Natural Science Foundation of China[12072350] ; Chinese Academy of Sciences Key Research Program of Frontier Sciences[QYZDB-SSW-JSC036] ; Chinese Academy of Sciences Strategic Priority Research Program[XDB22040403] ; National Key R&D Program of China[2022YFF0503504]
WOS关键词	MACROSCOPIC RIGID SPHERES ; POISEUILLE FLOW ; SPHERICAL-PARTICLES ; MIGRATION ; BEHAVIOR
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001074650900024
资助机构	Natural Science Foundation of China ; Chinese Academy of Sciences Key Research Program of Frontier Sciences ; Chinese Academy of Sciences Strategic Priority Research Program ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93114]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Hu, Guoqing
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China 2.Tsinghua Univ, Dept Energy & Power Engn, Ctr Combust Energy, Key Lab Thermal Sci & Power Engn,Minist Educ, Beijing 100084, Peoples R China 3.Zhejiang Univ, Dept Engn Mech, State Key Lab Fluid Power & Mech Syst, Hangzhou 310027, Peoples R China
推荐引用方式 GB/T 7714	Su, Jinghong,Zheng, Xu,Hu, Guoqing. New explicit formula for inertial lift in confined flows[J]. PHYSICS OF FLUIDS,2023,35(9):8.
APA	Su, Jinghong,Zheng, Xu,&Hu, Guoqing.(2023).New explicit formula for inertial lift in confined flows.PHYSICS OF FLUIDS,35(9),8.
MLA	Su, Jinghong,et al."New explicit formula for inertial lift in confined flows".PHYSICS OF FLUIDS 35.9(2023):8.