Local dissipation properties and collision dynamics in a sustained homogeneous turbulent suspension composed of finite size particles
| Autor: | Eric Climent, Jean-Luc Estivalezes, Stéphane Vincent, J C Braendle de Motta |
|---|---|
| Přispěvatelé: | Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, ONERA - The French Aerospace Lab [Toulouse], ONERA, Laboratoire de Modélisation et Simulation Multi Echelle (MSME), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Marne-la-Vallée (UPEM), Université Paris-Est Marne-la-Vallée (UPEM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National des Sciences Appliquées de Rouen - INSA (FRANCE), Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE), Université de Rouen - UR (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université Paris-Est Marne-La-Vallée - UPEM (FRANCE), Institut de Mécanique des Fluides de Toulouse - IMFT (Toulouse, France), Institut National Polytechnique de Toulouse - INPT (FRANCE) |
| Rok vydání: | 2016 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics Field (physics) Local dissipation Coulomb collision Turbulence Mécanique des fluides Mechanical Engineering General Physics and Astronomy Mechanics Particulate-flows Dissipation Collision 01 natural sciences [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] 010305 fluids & plasmas 0103 physical sciences Particle Collision statistics Zero gravity Particle size 010306 general physics Finite-size particles |
| Zdroj: | International Journal of Multiphase Flow International Journal of Multiphase Flow, Elsevier, 2016, 85, pp.369-379. ⟨10.1016/j.ijmultiphaseflow.2016.07.003⟩ |
| ISSN: | 0301-9322 |
| Popis: | International audience; Particulate flows are present in many applications and the effect of particle size is still not well understood. The present paper describes three cases of sustained homogeneous turbulence interacting with particles. Simulations correspond to three particle-fluid density ratios and 3% volume fraction in zero gravity field. Fully resolved particle simulations are based on fictitious domain and penalty method. The local dissipation around particles is studied according to the density ratio. Spatial description of the averaged dissipation is provided. Collision statistics are also investigated. The inter collision time and the angle of collision are compared to the kinetic theory. The effect of the inter particle film drainage is highlighted by simulating the same configurations with and without lubrication model. |
| Databáze: | OpenAIRE |
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