Velocity fluctuations and hydrodynamic diffusion in sedimentation
We study non-equilibrium velocity fluctuations in a model for the sedimentation of non-Brownian particles experiencing long-range hydrodynamic interactions. The complex behavior of these fluctuations, the outcome of the collective dynamics of the particles, exhibits many of the features observed in...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2001 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/126217 |
| Acceso en línea: | https://hdl.handle.net/2117/126217 https://dx.doi.org/10.1209/epl/i2001-00226-8 |
| Access Level: | acceso abierto |
| Palabra clave: | Sedimentation and deposition Fluctuations (Physics) Velocity fluctuations in sedimentation Hydrodynamic diffusion in sedimentation Sedimentació Fluctuacions (Física) Àrees temàtiques de la UPC::Física |
| Sumario: | We study non-equilibrium velocity fluctuations in a model for the sedimentation of non-Brownian particles experiencing long-range hydrodynamic interactions. The complex behavior of these fluctuations, the outcome of the collective dynamics of the particles, exhibits many of the features observed in sedimentation experiments. In addition, our model predicts a final relaxation to an anisotropic (hydrodynamic) diffusive state that could be observed in experiments performed over longer time ranges. |
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