| Lattice Boltzmann k- w SST based hybrid RANS/LES simulations of turbulent flows | |
| Mozaffari, Sajad1; Cai SG(蔡尚炅)1,2,3; Jacob, Jerome1; Sagaut, Pierre1 | |
| Corresponding Author | Cai, Shang-Gui([email protected]) |
| Source Publication | JOURNAL OF COMPUTATIONAL PHYSICS
 |
| 2024-10-01 | |
| Volume | 514Pages:21 |
| ISSN | 0021-9991 |
| Abstract | High Reynolds number simulations with lattice Boltzmann method (LBM) have been computationally feasible by means of turbulence models for under-resolved physical scales. Hybrid RANS/LES models are efficient alternatives to accurate but computationally expensive LES techniques. This study investigates extensively the hybrid RANS/LES models in the LBM framework for complex wall-bounded turbulent flow simulations on non-body fitting Cartesian grids. The hybridization processes for these models are applied to a widely used two-equation RANS base model, specifically the k-omega SST turbulence model. The functionality of these hybrid models is validated through the simulation of a three-dimensional fully turbulent flow over an airfoil. In addition, they are assessed by performing LBM simulations of flows surrounding a generic vehicle geometry, the Ahmed body, in order to reproduce the solution of a similar simulation by conventional CFD methods and to compare with wind tunnel experimental data. It is found that the near-wall treatments have significant impacts on the local boundary flow structures and possible remedies are also discussed. |
| Keyword | Hybrid RANS/LES Lattice Boltzmann method (LBM) Turbulence modeling High Reynolds numbers |
| DOI | 10.1016/j.jcp.2024.113269 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001272412900001 |
| WOS Keyword | LARGE-EDDY SIMULATIONS ; MODEL ; FORMULATIONS ; SCHEMES |
| WOS Research Area | Computer Science ; Physics |
| WOS Subject | Computer Science, Interdisciplinary Applications ; Physics, Mathematical |
| Funding Project | ANR Industrial Chair ALBUMS[ANR-18-CHIN-0003-01] ; French project BALBUZARD - DGAC ; EU |
| Funding Organization | ANR Industrial Chair ALBUMS ; French project BALBUZARD - DGAC ; EU |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Cai, Shang-Gui |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96036 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Aix Marseille Univ, Cent Marseille, CNRS, M2P2,UMR 7340, 38 Rue Joliot Curie, F-13451 Marseille, France; 2.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Mozaffari, Sajad,Cai SG,Jacob, Jerome,et al. Lattice Boltzmann k- w SST based hybrid RANS/LES simulations of turbulent flows[J]. JOURNAL OF COMPUTATIONAL PHYSICS,2024,514:21.Rp_Au:Cai, Shang-Gui |
| APA | Mozaffari, Sajad,蔡尚炅,Jacob, Jerome,&Sagaut, Pierre.(2024).Lattice Boltzmann k- w SST based hybrid RANS/LES simulations of turbulent flows.JOURNAL OF COMPUTATIONAL PHYSICS,514,21. |
| MLA | Mozaffari, Sajad,et al."Lattice Boltzmann k- w SST based hybrid RANS/LES simulations of turbulent flows".JOURNAL OF COMPUTATIONAL PHYSICS 514(2024):21. |
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