Preferential Concentration of Free-Falling Heavy Particles in Turbulence
We present a sweep-stick mechanism for heavy particles transported by a turbulent flow under the action of gravity. Direct numerical simulations show that these particles preferentially explore regions of the flow with close to zero Lagrangian acceleration. However, the actual Lagrangian acceleratio...
| Autores: | , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2020 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositório: | CONICET Digital (CONICET) |
| Idioma: | inglês |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/146237 |
| Acesso em linha: | http://hdl.handle.net/11336/146237 |
| Access Level: | Acceso aberto |
| Palavra-chave: | MULTIPHASE FLOWS TURBULENCE PARTICLE LADEN FLOWS STOKES DRAG https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Resumo: | We present a sweep-stick mechanism for heavy particles transported by a turbulent flow under the action of gravity. Direct numerical simulations show that these particles preferentially explore regions of the flow with close to zero Lagrangian acceleration. However, the actual Lagrangian acceleration of the fluid elements where particles accumulate is not zero, and has a dependence on the Stokes number, the gravity acceleration, and the settling velocity of the particles. |
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