A priori study for the modeling of LES subgrid scale terms in resolved scale multiphase flows
| Autor: | Stéphane Vincent, Meryem Ould-Rouiss, Mathilde Tavares, Jean-Luc Estivalezes |
|---|---|
| Přispěvatelé: | Laboratoire de Modélisation et Simulation Multi Echelle (MSME), 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), ONERA / DMPE, Université de Toulouse [Toulouse], ONERA-PRES Université de Toulouse, 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), Vincent, Stéphane |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Scale (ratio)
Computer science Lighter fluid Energy transfer MULTIPHASE FLOWS Process (computing) Direct numerical simulation 3D DIRECT NUMERICAL SIMULATION [SPI.MECA.MEFL] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] 01 natural sciences 010305 fluids & plasmas [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] 010101 applied mathematics Physics::Fluid Dynamics ENERGY TRANSFER ACROSS THE INTERFACE Flow (mathematics) 0103 physical sciences Relative magnitude A priori and a posteriori Statistical physics 0101 mathematics LES MODELS |
| Zdroj: | Notes On Numerical Fluid Mechanics And Multidisciplinary Design, Springer Notes On Numerical Fluid Mechanics And Multidisciplinary Design, Springer, 2018 Notes on Numerical Fluid Mechanics and Multidisciplinary Design ISBN: 9783319603865 |
| Popis: | International audience; Modeling accurately the energy transfer across the interface in multiphase flows is difficult. To deal with this phenomenon, the derivation of the governing equations for two-phase flows have been formulated. A priori tests are used in order to evaluate the relative magnitude of unclosed LES specific terms to multiphase flows. There consist in the explicit filtering of 3D Direct Numerical Simulation in order to find LES models appropriated to the different subgrid contributions. In our study, explicit volume filtering and phase weighted filtering have been used in a case of phase separation flow in a cubic closed box between water, the heavier fluid and oil, the lighter fluid, in order to understand the effect of the filtering process on the subgrid contributions. |
| Databáze: | OpenAIRE |
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