Verification of the WALE large eddy simulation model for adaptive lattice Boltzmann methods implemented in the AMROC framework
Verification of the WALE large eddy simulation model for adaptive lattice Boltzmann methods implemented in the AMROC framework
We detail the verification of the WALE large eddy simulation turbulence model for application in cell-based lattice Boltzmann methods, as implemented in our generic Cartesian structured adaptive mesh refinement framework AMROC. We demonstrate how to effectively apply the test case of decaying homogeneous isotropic turbulence to verify the core WALE implementation against higher resolved direct numerical simulations and the constant-coefficient Smagorinsky turbulence model. Both standard and regularised single relaxation collision models are analysed systematically. While our results confirm the established observation that the standard collision model yields less dissipative energy spectra, novel quantitative evidence is given that this positive behaviour comes at the cost of unphysical perturbations in high wavenumbers. In order to allow unaltered application of the finite-difference stencils intrinsic to the WALE approach in real-world flow situations, a new method is presented for ensuring consistent boundary conditions in microscopic distribution functions as well as in macroscopic variables. The benefit of the proposed technique is shown for dynamically adaptive simulations of flow around a sphere at Reynolds number 1000 and compared to a large eddy simulation using the constant-coefficient Smagorinsky model.
123-144
Gkoudesnes, Christos
c2db6c71-6628-463f-8260-6ecea15cbe0e
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
2021
Gkoudesnes, Christos
c2db6c71-6628-463f-8260-6ecea15cbe0e
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
Gkoudesnes, Christos and Deiterding, Ralf
(2021)
Verification of the WALE large eddy simulation model for adaptive lattice Boltzmann methods implemented in the AMROC framework.
In,
Deiterding, Ralf, Domingues, Margarete and Schneider, Kai
(eds.)
Cartesian CFD Methods for Complex Applications: Thematic mini-symposium contributions from ICIAM 2019.
(SEMA SIMAI Springer Series, 3)
International Congress on Industrial and Applied Mathematics (15/07/19 - 19/07/19)
Cham.
Springer, .
(doi:10.1007/978-3-030-61761-5_6).
Record type:
Book Section
Abstract
We detail the verification of the WALE large eddy simulation turbulence model for application in cell-based lattice Boltzmann methods, as implemented in our generic Cartesian structured adaptive mesh refinement framework AMROC. We demonstrate how to effectively apply the test case of decaying homogeneous isotropic turbulence to verify the core WALE implementation against higher resolved direct numerical simulations and the constant-coefficient Smagorinsky turbulence model. Both standard and regularised single relaxation collision models are analysed systematically. While our results confirm the established observation that the standard collision model yields less dissipative energy spectra, novel quantitative evidence is given that this positive behaviour comes at the cost of unphysical perturbations in high wavenumbers. In order to allow unaltered application of the finite-difference stencils intrinsic to the WALE approach in real-world flow situations, a new method is presented for ensuring consistent boundary conditions in microscopic distribution functions as well as in macroscopic variables. The benefit of the proposed technique is shown for dynamically adaptive simulations of flow around a sphere at Reynolds number 1000 and compared to a large eddy simulation using the constant-coefficient Smagorinsky model.
Text
CFDMETHODS_007_final_v3
- Accepted Manuscript
Available under License Other.
More information
Accepted/In Press date: 29 May 2020
e-pub ahead of print date: 7 November 2020
Published date: 2021
Additional Information:
Funding Information:
Acknowledgments This work was supported by UK Research and Innovation under grant EP/N509747/1 with project number 1831845. The authors also acknowledge the use of the IRIDIS High-Performance Computing Facility and associated support services at the University of Southampton.
Funding Information:
This work was supported by UK Research and Innovation under grant EP/N509747/1 with project number 1831845. The authors also acknowledge the use of the IRIDIS High-Performance Computing Facility and associated support services at the University of Southampton.
Publisher Copyright:
© 2020, The Author(s), under exclusive license to Springer Nature Switzerland AG.
Venue - Dates:
International Congress on Industrial and Applied Mathematics, , Valencia, Spain, 2019-07-15 - 2019-07-19
Identifiers
Local EPrints ID: 441217
URI: http://eprints.soton.ac.uk/id/eprint/441217
ISSN: 2199-3041
PURE UUID: c54d2666-1ae8-49f0-8e44-d92a63d4fde5
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Date deposited: 04 Jun 2020 16:32
Last modified: 17 Mar 2024 05:37
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Contributors
Author:
Christos Gkoudesnes
Editor:
Ralf Deiterding
Editor:
Margarete Domingues
Editor:
Kai Schneider
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