Dynamics of a spherical particle in a low-Reynolds-number fluid confined between two concentric spherical walls
文献类型：期刊论文
| 作者 | Sun Z(孙壮)2,3; de Pablo, Juan J1,4,5; Jiang XK(蒋玺恺)2,3 |
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 2025-08-27 |
| 卷号 | 1018页码:27 |
| 关键词 | low-Reynolds-number flows microscale transport particle/fluid flow |
| ISSN号 | 0022-1120 |
| DOI | 10.1017/jfm.2025.10516 |
| 通讯作者 | Jiang, Xikai(xikaij@imech.ac.cn) |
| 英文摘要 | Dynamics of a spherical particle and the suspending low-Reynolds-number fluid confined between two concentric spherical walls were studied numerically. We calculated the particle's hydrodynamic mobilities at various locations in the confined space. It was observed that the mobility is largest near the middle of confined space along the radial direction, and decays as the particle becomes closer to no-slip walls. At a certain confinement level, the maximal mobility occurs near the inner wall. We also calculated the drift velocity of the particle perpendicular to the external force. The magnitude of the drift velocity normalised by the velocity along the external force was found to depend on particle location and the confinement level; it is observed that the maximal drift velocity occurs near the wall. Fluid vortices in the confined space induced by particle motion were observed and analysed. In addition, we studied particle trajectories in the flow when the walls rotate at constant angular velocities. The externally applied force, rotation-induced flow and centrifugal/centripetal force, and particle-wall interaction lead to various modes of particle motion. This work lays the foundation to understand and manipulate particulate transport in microfluidic applications such as intracellular transport and encapsulation technologies. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | EQUATION-OF-MOTION ; TRANSLATION ; ROTATION ; SPHERES ; CELLS ; FLOW |
| 资助项目 | National Key R & D Programme of China[2022YFF0503504] ; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDB0620102] ; Strategic Priority Research Programme of the Chinese Academy of Sciences[XDA0470203] ; International Cooperation Grant from the Chinese Academy of Sciences[025GJHZ2022023MI] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001557157600001 |
| 资助机构 | National Key R & D Programme of China ; Strategic Priority Research Programme of the Chinese Academy of Sciences ; International Cooperation Grant from the Chinese Academy of Sciences |
| 其他责任者 | 蒋玺恺 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/103623]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.NYU, Tandon Sch Engn, Brooklyn, NY 11201 USA 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Univ Chicago, Pritzker Sch Mol Engn, Chicago, IL 60637 USA; 5.Argonne Natl Lab, Mat Sci Div, Lemont, IL 60439 USA; |
| 推荐引用方式 GB/T 7714 | Sun Z,de Pablo, Juan J,Jiang XK. Dynamics of a spherical particle in a low-Reynolds-number fluid confined between two concentric spherical walls[J]. JOURNAL OF FLUID MECHANICS,2025,1018:27. |
| APA | 孙壮,de Pablo, Juan J,&蒋玺恺.(2025).Dynamics of a spherical particle in a low-Reynolds-number fluid confined between two concentric spherical walls.JOURNAL OF FLUID MECHANICS,1018,27. |
| MLA | 孙壮,et al."Dynamics of a spherical particle in a low-Reynolds-number fluid confined between two concentric spherical walls".JOURNAL OF FLUID MECHANICS 1018(2025):27. |
入库方式： OAI收割
来源：力学研究所
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