Motion of a sphere and the suspending low-Reynolds-number fluid confined in a cubic cavity
Dynamics of a spherical particle and the suspending low-Reynolds-number fluid confined by a cubic cavity were studied numerically. We calculated the particle’s hydrodynamic mobilities along x-, y-, and z-directions at various locations in the cavity. The mobility is largest in the cavity center and...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | Theoretical and Applied Mechanics Letters |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095034922000320 |
| _version_ | 1811233547883642880 |
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| author | Gaofeng Chen Xikai Jiang |
| author_facet | Gaofeng Chen Xikai Jiang |
| author_sort | Gaofeng Chen |
| collection | DOAJ |
| description | Dynamics of a spherical particle and the suspending low-Reynolds-number fluid confined by a cubic cavity were studied numerically. We calculated the particle’s hydrodynamic mobilities along x-, y-, and z-directions at various locations in the cavity. The mobility is largest in the cavity center and decays as the particle becomes closer to no-slip walls. It was found that mobilities in the entire cubic cavity can be determined by a minimal set in a unit tetrahedron therein. Fluid vortices in the cavity induced by the particle motion were observed and analyzed. We also found that the particle can exhibit a drift motion perpendicular to the external force. Magnitude of the drift velocity normalized by the velocity along the direction of the external force depends on particle location and particle-to-cavity sizes ratio. This work forms the basis to understand more complex dynamics in microfluidic applications such as intracellular transport and encapsulation technologies. |
| first_indexed | 2024-04-12T11:21:43Z |
| format | Article |
| id | doaj.art-fdf42a7564ca4c1ca4f61beff37ed2d4 |
| institution | Directory Open Access Journal |
| issn | 2095-0349 |
| language | English |
| last_indexed | 2024-04-12T11:21:43Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Theoretical and Applied Mechanics Letters |
| spelling | doaj.art-fdf42a7564ca4c1ca4f61beff37ed2d42022-12-22T03:35:22ZengElsevierTheoretical and Applied Mechanics Letters2095-03492022-05-01124100352Motion of a sphere and the suspending low-Reynolds-number fluid confined in a cubic cavityGaofeng Chen0Xikai Jiang1State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author.Dynamics of a spherical particle and the suspending low-Reynolds-number fluid confined by a cubic cavity were studied numerically. We calculated the particle’s hydrodynamic mobilities along x-, y-, and z-directions at various locations in the cavity. The mobility is largest in the cavity center and decays as the particle becomes closer to no-slip walls. It was found that mobilities in the entire cubic cavity can be determined by a minimal set in a unit tetrahedron therein. Fluid vortices in the cavity induced by the particle motion were observed and analyzed. We also found that the particle can exhibit a drift motion perpendicular to the external force. Magnitude of the drift velocity normalized by the velocity along the direction of the external force depends on particle location and particle-to-cavity sizes ratio. This work forms the basis to understand more complex dynamics in microfluidic applications such as intracellular transport and encapsulation technologies.http://www.sciencedirect.com/science/article/pii/S2095034922000320Particle dynamicsLow-Reynolds-number fluidConfinementMobilityDrift |
| spellingShingle | Gaofeng Chen Xikai Jiang Motion of a sphere and the suspending low-Reynolds-number fluid confined in a cubic cavity Theoretical and Applied Mechanics Letters Particle dynamics Low-Reynolds-number fluid Confinement Mobility Drift |
| title | Motion of a sphere and the suspending low-Reynolds-number fluid confined in a cubic cavity |
| title_full | Motion of a sphere and the suspending low-Reynolds-number fluid confined in a cubic cavity |
| title_fullStr | Motion of a sphere and the suspending low-Reynolds-number fluid confined in a cubic cavity |
| title_full_unstemmed | Motion of a sphere and the suspending low-Reynolds-number fluid confined in a cubic cavity |
| title_short | Motion of a sphere and the suspending low-Reynolds-number fluid confined in a cubic cavity |
| title_sort | motion of a sphere and the suspending low reynolds number fluid confined in a cubic cavity |
| topic | Particle dynamics Low-Reynolds-number fluid Confinement Mobility Drift |
| url | http://www.sciencedirect.com/science/article/pii/S2095034922000320 |
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