HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Development and Validation of a new formulation of Hybrid Temporal Large Eddy Simulation

Abstract : Hybrid RANS-LES approaches have aroused interest for years since they provide unsteady information at a reduced numerical cost compared to LES. In the hybrid context, the use of temporal filtering, to control the energy partition between resolved and modeled scales, ensures a consistent bridging between RANS and LES models. In this regard, a new formulation of Hybrid Temporal Large Eddy Simulation (HTLES) is developed, aiming at improving the theoretical foundation of the model associated with an eddy-viscosity closure. The analytical development is performed, applying the Hybrid-Equivalence criterion, and the model is calibrated in decaying isotropic turbulence. In addition, an upgraded version of the approach is proposed to improve the behavior of the model in near-wall regions, introducing a two-fold shielding function and an internal consistency constraint to provide a suitable control of the RANS-to-LES transition. Applying HTLES to the k-w-SST model, the validation process is carried out on channel and periodic-hill flows, over a range of grids and Reynolds numbers. The predictive accuracy and the robustness to grid coarsening are assessed in these cases, ensuring that HTLES offers a cost-saving alternative to LES.
Complete list of metadata

https://hal.inria.fr/hal-03206747
Contributor : Remi Manceau Connect in order to contact the contributor
Submitted on : Friday, April 23, 2021 - 6:44:54 PM
Last modification on : Friday, March 4, 2022 - 3:00:38 PM
Long-term archiving on: : Saturday, July 24, 2021 - 6:57:02 PM

File

Duffal2021b.pdf
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License

Identifiers

Collections

Citation

Vladimir Duffal, Benoît de Laage de Meux, Remi Manceau. Development and Validation of a new formulation of Hybrid Temporal Large Eddy Simulation. Flow, Turbulence and Combustion, Springer Verlag (Germany), 2022, 108, pp.42. ⟨10.1007/s10494-021-00264-z⟩. ⟨hal-03206747⟩

Share

Metrics

Record views

131

Files downloads

37