Particle orbiting constrained by elastic filament as a model cilium for fluid pumping

doi:10.1017/jfm.2023.436

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Particle orbiting constrained by elastic filament as a model cilium for fluid pumping
	Hu, Shiyuan ; Meng, Fanlong 1,2
刊名	JOURNAL OF FLUID MECHANICS
	2023
卷号	966 页码:A23
关键词	ARTIFICIAL CILIA NETWORK DRIVEN
ISSN号	0022-1120
DOI	10.1017/jfm.2023.436
英文摘要	Many microorganisms use cilia to propel themselves in low Reynolds number (Re) environments. In this work, we study the dynamics of a composite cilium consisting of an elastic filament and a spherical particle attached at the filament tip driven by an external time-per iodic force acting on the particle. The elastic filament is modelled numerically using a slender body theory with hydrodynamic interactions. When tilted at a large angle from the normal direction of the wall, the filament buckles, and the induced velocity field by the cilium shows a large net flux. By varying the tilt angle or the force amplitude, the particle trajectory and the net flux display abrupt changes along with a reversal of the buckling direction. We further demonstrate through a segmental model that the abrupt changes arise from the deviation of the cilium orientation at the start of the recovery stroke from the natural orientation. Our results suggest a simple approach to engineering particle motions and designing artificial cilia for fluid pumping in low Re environments.
学科主题	Mechanics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/28045]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Univ Chinese Acad Sci, Wenzhou Inst, Ctr Theoret Interdisciplinary Sci, Wenzhou 325001, Peoples R China
推荐引用方式 GB/T 7714	Hu, Shiyuan,Meng, Fanlong. Particle orbiting constrained by elastic filament as a model cilium for fluid pumping[J]. JOURNAL OF FLUID MECHANICS,2023,966:A23.
APA	Hu, Shiyuan,&Meng, Fanlong.(2023).Particle orbiting constrained by elastic filament as a model cilium for fluid pumping.JOURNAL OF FLUID MECHANICS,966,A23.
MLA	Hu, Shiyuan,et al."Particle orbiting constrained by elastic filament as a model cilium for fluid pumping".JOURNAL OF FLUID MECHANICS 966(2023):A23.