3D CFD simulation of the interaction between front wheels&amp;brake ducts and optimised five-element F1 race car front wings under regulations

Granados-Ortiz, Francisco-Javier; Morales-Higueras, Pablo; Ortega-Casanova, J.

doi:10.1016/j.aej.2023.02.011

Cited by 3 publications

(1 citation statement)

References 46 publications

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“…However, LES requires a large number of grids, longer calculation time and more resources (Favre and Efraimsson, 2011). DES combines RANS’ effective processing of boundary layer flow with LES’s effective simulation of separated flow and eliminates the need for a large amount of computing resources, making it faster and more accurate (Granados-Ortiz et al , 2023; Davidson, 2021). Therefore, this study aims to use the DES to investigate the transient aerodynamic characteristics of a sedan-type vehicle rolling under crosswind conditions.…”

Section: Introductionmentioning

confidence: 99%

The influence of vehicle body roll motion on aerodynamic characteristics under crosswind condition

Taiming,

Ma,

Zhang

et al. 2023

HFF

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Purpose The purpose of this study is investigate the transient aerodynamic characteristics of high-speed vehicle with body roll motion under crosswind condition to improve aerodynamic stability. Design/methodology/approach An overset mesh was used to simulate the rolling motion of the vehicle body. A wind tunnel experiment was conducted to validate the numerical method. Findings The results revealed that the vehicle’s aerodynamic characteristics changed periodically with the body’s periodic motion. In the absence of crosswind, the pressure distribution on the left and right sides of the vehicle body was symmetrical, and the speed streamline flowed to the rear of the vehicle in an orderly manner. The maximum aerodynamic lift observed in the transient simulation was −0.089, which is approximately 0.70 times that of the quasi-static simulation experiment. In addition, the maximum aerodynamic side force observed in the transient simulation was 0.654, which is approximately 1.25 times that of the quasi-static simulation experiment. Originality/value The aerodynamic load varies periodically with the vehicle body’s cyclic motion. However, the extreme values of the aerodynamic load do not occur when the vehicle body is at its highest or lowest position. This phenomenon is primarily attributed to the mutual interference of airflow viscosity and the hysteresis effect in the flow field, leading to the formation of a substantial vortex near the wheel. Consequently, the aerodynamic coefficient at each horizontal position becomes inconsistent during the periodic rolling of the vehicle body.

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Section: Introductionmentioning

confidence: 99%

The influence of vehicle body roll motion on aerodynamic characteristics under crosswind condition

Taiming,

Ma,

Zhang

et al. 2023

HFF

View full text Add to dashboard Cite

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Shape optimization of annular transonic thrust nozzles via genetic algorithm and adjoint method

Narimani,

Joulaei,

Shirvani

et al. 2024

Results in Engineering

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Research on the drag reduction of high-speed train based on bottom two-multistage wing deflector

Jiang,

Li,

Long

et al. 2024

Physics of Fluids

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To address the challenge of reducing aerodynamic drag while further enhancing the speed of high-speed trains, this research employs the concept of flow control for the bottom parts and draws inspiration from the front wings of Formula 1 (F1) race cars. Three kinds of two-multistage wing deflectors are designed and systematically analyzed by unsteady Reynolds-averaged Navier–Stokes (URANS) turbulent model. The most suitable design is determined by the single bogie model with a simplified train body. Using the improved delayed detached eddy simulation method, the aerodynamic drag of 1:8 three-car train models with or without two-multistage wing deflector is studied at different operational speeds. The results present the total drag reduction is higher at higher speeds. The reductions of 4.26%, 3.92%, 3.63%, and 3.49% are obtained at the operating speeds of 400, 350, 300, and 200 km/h, respectively. The two-multistage wing deflector desirably improves the flow structure at the bottom of the train, which leads to the reduction of aerodynamic drag and a corresponding reduction in the positive pressure zones within the bogie area. Furthermore, the deflector restricts shedding vortices, effectively narrowing the interference range of airflow under the train, which will provide a potential drag reduction method for the next generation high-speed train.

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3D CFD simulation of the interaction between front wheels&brake ducts and optimised five-element F1 race car front wings under regulations

Cited by 3 publications

References 46 publications

The influence of vehicle body roll motion on aerodynamic characteristics under crosswind condition

The influence of vehicle body roll motion on aerodynamic characteristics under crosswind condition

Shape optimization of annular transonic thrust nozzles via genetic algorithm and adjoint method

Research on the drag reduction of high-speed train based on bottom two-multistage wing deflector

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