Since 1963
ARTICLE
Influence of geometrical defects on aerodynamic drag of non-watertight Ahmed body
1
Tianjin, CATARC (Tianjin) Automotive Engineering Research Institute Co., Ltd., China
Submission date: 2024-01-05
Final revision date: 2024-05-24
Acceptance date: 2024-10-22
Online publication date: 2024-10-30
Corresponding author
KEYWORDS
Lattice-Boltzmann methodhybrid recursive regularized collision modelWALE turbulence modelAhmed modelnon-watertight mesh
TOPICS
ABSTRACT
In order to overcome the numerical instability problem of LBM (Lattice Boltzmann Method) in high Reynolds number scenarios, The LBM-based TF-Lattice software used in this paper adopts the hybrid-recursive-regularized (HRR) model for the LBM collision operator and the WALE model for turbulence modelling. We firstly performed a fluid dynamics simulation of the Ahmed model with different back inclinations (0°-35°) using the TF-Lattice software. The calculated results are generally consistent with the experimental and simulation results in the literature, and the errors of the drag coefficients compared with experimental data under all conditions are within 5%.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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