Evaluating the lattice Boltzmann method for large eddy simulation with dynamic sub-grid scale models
Evaluating the lattice Boltzmann method for large eddy simulation with dynamic sub-grid scale models
In this paper, we verify the newly implemented Large Eddy Simulation (LES) models, namely the Dynamic SMAgorinsky (DSMA) and the Wall-Adapting Local Eddy-viscosity (WALE) in our Lattice Boltzmann Method (LBM) solver. The test cases of Forced Homogeneous Isotropic Turbulence (FHIT) and Taylor Green Vortex (TGV) were employed for this purpose. Direct Numerical Simulations (DNS) of FHIT were carried out to establish a resolution criterion for LBM based on a model spectrum. The low dissipation behaviour of LBM was also confirmed by DNS of TGV. LES of both test cases were able to recover the expected DNS results and were used to measure the performance of the two models in question. Particularly, for the DSMA we show that the estimation of the constant locally introduces unreasonable peaks in some regions, a similar behaviour as with DSMA models in Navier-Stokes solvers.
Gkoudesnes, Christos
c2db6c71-6628-463f-8260-6ecea15cbe0e
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
15 August 2019
Gkoudesnes, Christos
c2db6c71-6628-463f-8260-6ecea15cbe0e
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
Gkoudesnes, Christos and Deiterding, Ralf
(2019)
Evaluating the lattice Boltzmann method for large eddy simulation with dynamic sub-grid scale models.
11th International Symposium on Turbulence and Shear Flow Phenomena, , Southampton, United Kingdom.
30 Jul - 02 Aug 2019.
6 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this paper, we verify the newly implemented Large Eddy Simulation (LES) models, namely the Dynamic SMAgorinsky (DSMA) and the Wall-Adapting Local Eddy-viscosity (WALE) in our Lattice Boltzmann Method (LBM) solver. The test cases of Forced Homogeneous Isotropic Turbulence (FHIT) and Taylor Green Vortex (TGV) were employed for this purpose. Direct Numerical Simulations (DNS) of FHIT were carried out to establish a resolution criterion for LBM based on a model spectrum. The low dissipation behaviour of LBM was also confirmed by DNS of TGV. LES of both test cases were able to recover the expected DNS results and were used to measure the performance of the two models in question. Particularly, for the DSMA we show that the estimation of the constant locally introduces unreasonable peaks in some regions, a similar behaviour as with DSMA models in Navier-Stokes solvers.
Text
tsfp11_gkoudesnes
- Author's Original
More information
Published date: 15 August 2019
Venue - Dates:
11th International Symposium on Turbulence and Shear Flow Phenomena, , Southampton, United Kingdom, 2019-07-30 - 2019-08-02
Identifiers
Local EPrints ID: 433587
URI: http://eprints.soton.ac.uk/id/eprint/433587
PURE UUID: a0204b60-0d86-4a6d-aed9-4e79f8434746
Catalogue record
Date deposited: 28 Aug 2019 16:30
Last modified: 16 Mar 2024 04:22
Export record
Contributors
Author:
Christos Gkoudesnes
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
