Anisotropic Diffusion in Driven Convection Arrays
We numerically investigate the transport of a Brownian colloidal particle in a square array of planar counter-rotating convection rolls at high Péclet numbers. We show that an external force produces huge excess peaks of the particle’s diffusion constant with a height that depends on the force orien...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-03-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/23/3/343 |
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| author | Yunyun Li Vyacheslav R. Misko Fabio Marchesoni Pulak K. Ghosh |
| author_facet | Yunyun Li Vyacheslav R. Misko Fabio Marchesoni Pulak K. Ghosh |
| author_sort | Yunyun Li |
| collection | DOAJ |
| description | We numerically investigate the transport of a Brownian colloidal particle in a square array of planar counter-rotating convection rolls at high Péclet numbers. We show that an external force produces huge excess peaks of the particle’s diffusion constant with a height that depends on the force orientation and intensity. In sharp contrast, the particle’s mobility is isotropic and force independent. We relate such a nonlinear response of the system to the advection properties of the laminar flow in the suspension fluid. |
| first_indexed | 2024-03-10T13:15:22Z |
| format | Article |
| id | doaj.art-59f4f3c0600542d4bb2b95ba0fe2f746 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-10T13:15:22Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-59f4f3c0600542d4bb2b95ba0fe2f7462023-11-21T10:28:01ZengMDPI AGEntropy1099-43002021-03-0123334310.3390/e23030343Anisotropic Diffusion in Driven Convection ArraysYunyun Li0Vyacheslav R. Misko1Fabio Marchesoni2Pulak K. Ghosh3Center for Phononics and Thermal Energy Science, Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, ChinaCenter for Phononics and Thermal Energy Science, Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, ChinaCenter for Phononics and Thermal Energy Science, Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Chemistry, Presidency University, Kolkata 700073, IndiaWe numerically investigate the transport of a Brownian colloidal particle in a square array of planar counter-rotating convection rolls at high Péclet numbers. We show that an external force produces huge excess peaks of the particle’s diffusion constant with a height that depends on the force orientation and intensity. In sharp contrast, the particle’s mobility is isotropic and force independent. We relate such a nonlinear response of the system to the advection properties of the laminar flow in the suspension fluid.https://www.mdpi.com/1099-4300/23/3/343brownian motionclassical transportconvection rollsadvection enhanced diffusion |
| spellingShingle | Yunyun Li Vyacheslav R. Misko Fabio Marchesoni Pulak K. Ghosh Anisotropic Diffusion in Driven Convection Arrays Entropy brownian motion classical transport convection rolls advection enhanced diffusion |
| title | Anisotropic Diffusion in Driven Convection Arrays |
| title_full | Anisotropic Diffusion in Driven Convection Arrays |
| title_fullStr | Anisotropic Diffusion in Driven Convection Arrays |
| title_full_unstemmed | Anisotropic Diffusion in Driven Convection Arrays |
| title_short | Anisotropic Diffusion in Driven Convection Arrays |
| title_sort | anisotropic diffusion in driven convection arrays |
| topic | brownian motion classical transport convection rolls advection enhanced diffusion |
| url | https://www.mdpi.com/1099-4300/23/3/343 |
| work_keys_str_mv | AT yunyunli anisotropicdiffusionindrivenconvectionarrays AT vyacheslavrmisko anisotropicdiffusionindrivenconvectionarrays AT fabiomarchesoni anisotropicdiffusionindrivenconvectionarrays AT pulakkghosh anisotropicdiffusionindrivenconvectionarrays |