Particle orbiting constrained by elastic filament as a model cilium for fluid pumping
文献类型：期刊论文
| 作者 | Hu, Shiyuan; Meng, Fanlong1,2
|
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：理论物理研究所
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