CFD study of section characteristics of Formula Mazda race car wings

Kieffer, W.; Moujaes, Samir; Armbya, Narain

doi:10.1016/j.mcm.2005.03.011

Cited by 49 publications

(28 citation statements)

References 5 publications

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“…The influence of compressibility effects was investigated for high-lift aerodynamic designs operating in close ground proximity; the effects of compressibility are significant at speeds well below the Mach 0.3 threshold normally applied [16]. Previous studies of racing car aerodynamics have shown that small changes in parameters for a racing car can have significant effects on aerodynamic performance [10,12]. The addition of front and rear wings to an open-wheel racing car can produce a large amount of downforce by using a lifting body [6,13].…”

Section: Introductionmentioning

confidence: 99%

Passive variable rear-wing aerodynamics of an open-wheel racing car

Kajiwara

2017

Automot. Engine Technol.

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A rear wing designed to improve motoring performance and enhance stability during cornering needs to generate a large downforce at a relatively low speed. If the angle of attack of the rear wing is large, then air resistance is increased during high-speed driving, and thus, fuel consumption is increased due to the large drag values. On the other hand, the performance on high-speed cornering will improve overall lap time with an increased angle of attack. To mitigate this disadvantage, we aimed to reduce the angle of attack during high-speed driving to reduce downforce and drag and thus to reduce fuel consumption. Meanwhile, during low-speed driving, for example in cornering, the angle of attack was increased and a large downforce generated to improve driving stability. In order to achieve both goals, we developed a passive-type variable rear wing. This rear wing was designed to have a three-step shape where the second step in the center was designed to swing. We first confirmed the behavior through both computer-aided engineering analysis and wind tunnel experiments, and then we constructed a full-size rear wing and measured the downforce on a student Formula SAE vehicle. The results showed that it is possible to generate a downforce of 80 N at a low speed of 30 km/h (8.3 m/s) and a downforce of 145 N at a high speed of 50 km/h (13.9 m/ s).

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Section: Introductionmentioning

confidence: 99%

Passive variable rear-wing aerodynamics of an open-wheel racing car

Kajiwara

2017

Automot. Engine Technol.

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“…Tsai et al [13] investigated the flow structures and aero-acoustic features generated in the various rear spoiler configurations of a passenger car, using computational flow dynamics. In another study, Kieffer et al simulated a turbulent flow around the front and rear wing of a Formula Mazda race car and analyzed the effect of their angle of attack on car handling [14]. While, Jamei et al analyzed the aerodynamic performance of a wing in close proximity to the ground, using both numerical and experimental means [15].…”

Section: Introductionmentioning

confidence: 99%

Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential

Rasani¹,

Aldlemy

Harun³

2017

J. MECH. ENG. SCI.

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Increasing environmental and energy concerns constitutes an encouraging development of future automobiles and autonomous vehicles that utilize cleaner and renewable energy. Although primarily an aerodynamic device, car rear spoilers experience various vibrations and limited attention has been given to exploiting these vibrations for generating alternative energy. This paper aims to investigate the potential of using the flow-induced vibration of rear spoilers on automobiles for energy harvesting. To that end, a fluid-structure interaction analysis of an inverted NACA 2408 spoiler behind an Ahmed body was undertaken. An Arbitrary Lagrangian-Eulerian flow solver was coupled to a non-linear structural dynamic solver using a commercial software application. The vibrations of the rear spoiler placed at 0, 50 and 100 mm below the top face of the Ahmed body under Reynolds number Re = 2.7 × 10 6 were simulated. It was found that the vibration of the rear spoiler at the highest elevation showed the largest amplitudes and strain, but the vibration of the rear spoiler at the lowest elevation offers an extended period of vibration before reaching a steady state. With the rear spoiler positioned at the highest elevation, a vibration frequency of 70 Hz and a steady-state principal strain of 350  may be achieved. These vibration levels compared well with previous investigation to sufficiently charge storage capacitors for wireless transmitters. The rear spoiler vibration may offer potential means for energy harvesting, and warrants further experiments under actual driving conditions.

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“…The technology of Formula 1 has, however, almost completed the transformation from the "black art" of the 1950s and 1960s to the science of the 2000s [1]. Computer science enables every solution to be evaluated, with ultimate convergence on the solution.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Analysis on Racing Car Front Wings

Tan¹,

Myler²,

Tan³

2017

dtetr

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Abstract.A great number of studies have been done on aerodynamic test for the racing car. Due to critical competition among the racing car teams, the results of the studies will only been published when they are obsolete. This study was conducted by using the Computational Fluid Dynamics (CFD) utilising SolidWorksTM to perform simulations about the airflow on the front and rear wings of a racing car with different angles of attack. The analysis generates the theoretical Lift force, Down force, and Drag force for a racing car wing. Consequently, at higher velocity, the down force and interrelated induced drag increases. The maximum speed on a straight part is thus reduced due to the increase in induced drag. Finally, tests from the C15 wind tunnel also show similar trends to those derived from the simulations. Compared with results of Model geometry and wind tunnel tested, it is shown that an angle between -10° and -20° below the horizontal indicates the stalling conditions.

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CFD study of section characteristics of Formula Mazda race car wings

Cited by 49 publications

References 5 publications

Passive variable rear-wing aerodynamics of an open-wheel racing car

Passive variable rear-wing aerodynamics of an open-wheel racing car

Fluid-structure interaction analysis of rear spoiler vibration for energy harvesting potential

Investigation and Analysis on Racing Car Front Wings

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