Simulation of passenger car aerodynamics in overtaking manoeuvres with an adaptive lattice Boltzmann method
Simulation of passenger car aerodynamics in overtaking manoeuvres with an adaptive lattice Boltzmann method
Using the freely available DriAer passenger car geometries, the benefits of our Cartesian adaptive lattice Boltzmann solver AMROC-LBM for simulating the aerodynamics of vehicles in motion are demonstrated. A large eddy simulation (LES) approach with wall function model is applied to approximate the transient turbulent flow field, while motion is incorporated in a scalable way by representing complex moving bodies with signed distance level set functions and moving wall boundary conditions. The adaptive lattice Boltzmann-LES method in AMROC-LBM is first validated against experimentally measured drag coefficients of a single car geometry. Subsequently, a study of an overtaking manoeuvrer at 25% scale is conducted and verified with previously obtained simulation results from StarCCM+. Finally, predictions for a realistic overtaking manoeuvrer at full scale are presented.
CFD, dynamic mesh adaptation, lattice Boltzmann method, large eddy simulation, DrivAer, moving geometries
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
Harding, Jack
8e6d6ba2-3cb5-4a1f-b98e-730ef08e3313
Grondeau, Mikael
4276e69a-528b-45df-bf60-d7a37aa71fff
1 October 2024
Deiterding, Ralf
ce02244b-6651-47e3-8325-2c0a0c9c6314
Harding, Jack
8e6d6ba2-3cb5-4a1f-b98e-730ef08e3313
Grondeau, Mikael
4276e69a-528b-45df-bf60-d7a37aa71fff
Deiterding, Ralf, Harding, Jack and Grondeau, Mikael
(2024)
Simulation of passenger car aerodynamics in overtaking manoeuvres with an adaptive lattice Boltzmann method.
Iványi, P., Kruis, J. and Topping, B.H.V.
(eds.)
In Proceedings of the Twelfth International Conference on Engineering Computational Technology: Civil-Comp Conferences.
vol. 8,
Civil-Comp Press..
(doi:10.4203/ccc.8.6.1).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Using the freely available DriAer passenger car geometries, the benefits of our Cartesian adaptive lattice Boltzmann solver AMROC-LBM for simulating the aerodynamics of vehicles in motion are demonstrated. A large eddy simulation (LES) approach with wall function model is applied to approximate the transient turbulent flow field, while motion is incorporated in a scalable way by representing complex moving bodies with signed distance level set functions and moving wall boundary conditions. The adaptive lattice Boltzmann-LES method in AMROC-LBM is first validated against experimentally measured drag coefficients of a single car geometry. Subsequently, a study of an overtaking manoeuvrer at 25% scale is conducted and verified with previously obtained simulation results from StarCCM+. Finally, predictions for a realistic overtaking manoeuvrer at full scale are presented.
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Published date: 1 October 2024
Keywords:
CFD, dynamic mesh adaptation, lattice Boltzmann method, large eddy simulation, DrivAer, moving geometries
Identifiers
Local EPrints ID: 495501
URI: http://eprints.soton.ac.uk/id/eprint/495501
PURE UUID: 5c8b716b-165f-4981-8cf6-c71a3b62e0c7
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Date deposited: 14 Nov 2024 18:10
Last modified: 15 Nov 2024 02:48
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Contributors
Author:
Jack Harding
Author:
Mikael Grondeau
Editor:
P. Iványi
Editor:
J. Kruis
Editor:
B.H.V. Topping
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