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R. Deiterding¹, J. Harding¹ and M. Grondeau²

¹Department Aeronautics & Astronautics, University of Southampton, Southampton, United Kingdom
²Laboratoire Universitaire des Sciences Appliquées de Cherbourg, Université de Caen Normandie, Cherbourg-Octeville, France

doi:10.4203/ccc.8.6.1

R. Deiterding, J. Harding, M. Grondeau, "Simulation of Passenger Car Aerodynamics in Overtaking Manoeuvres with an Adaptive Lattice Boltzmann Method", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Twelfth International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 8, Paper 6.1, 2024, doi:10.4203/ccc.8.6.1

Keywords: CFD, dynamic mesh adaptation, lattice Boltzmann method, large eddy simulation, DrivAer, moving geometries.

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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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 8 PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY Edited by: P. Iványi, J. Kruis and B.H.V. Topping Paper 6.1 Simulation of Passenger Car Aerodynamics in Overtaking Manoeuvres with an Adaptive Lattice Boltzmann Method R. Deiterding¹, J. Harding¹ and M. Grondeau² ¹Department Aeronautics & Astronautics, University of Southampton, Southampton, United Kingdom ²Laboratoire Universitaire des Sciences Appliquées de Cherbourg, Université de Caen Normandie, Cherbourg-Octeville, France doi:10.4203/ccc.8.6.1 Full Bibliographic Reference for this paper R. Deiterding, J. Harding, M. Grondeau, "Simulation of Passenger Car Aerodynamics in Overtaking Manoeuvres with an Adaptive Lattice Boltzmann Method", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Twelfth International Conference on Engineering Computational Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 8, Paper 6.1, 2024, doi:10.4203/ccc.8.6.1 Keywords: CFD, dynamic mesh adaptation, lattice Boltzmann method, large eddy simulation, DrivAer, moving geometries. 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. download the full-text of this paper (PDF, 3396 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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