Aerodynamic coastdown analysis of a passenger car for various configurations

Altinisik, Armagan

doi:10.1007/s12239-017-0024-6

Cited by 11 publications

(3 citation statements)

References 12 publications

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“…Experiments were performed in the wind tunnel for the yaw angles of 0 deg, 5 deg, and 10 deg due to the test section dimensional restriction. He obtained the drag coefficients for three different test configurations, and the comparison of the drag coefficients for all three coastdown configurations were in good agreement with the CFD results and FIAT wind tunnel results [7]. Zhang Yingchao, et al [8] researched on the aerodynamic drag both in wind tunnel test and CFD, and obtained the reasons for the drag coefficients increased.…”

Section: Introductionsupporting

confidence: 54%

Aerodynamic research of a racing car based on wind tunnel test and computational fluid dynamics

Wang

Liu

et al. 2018

MATEC Web Conf.

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Abstract. Wind tunnel test and computational fluid dynamics (CFD) simulation are two main methods for the study of automotive aerodynamics. CFD simulation software solves the results in calculation by using the basic theory of aerodynamic. Calculation will inevitably lead to bias, and the wind tunnel test can effectively simulate the real driving condition, which is the most effective aerodynamics research method. This paper researches the aerodynamic characteristics of the wing of a racing car. Aerodynamic model of a racing car is established. Wind tunnel test is carried out and compared with the simulation results of computational fluid dynamics. The deviation of the two methods is small, and the accuracy of computational fluid dynamics simulation is verified. By means of CFD software simulation, the coefficients of six aerodynamic forces are fitted and the aerodynamic equations are obtained. Finally, the aerodynamic forces and torques of the racing car travel in bend are calculated.

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Section: Introductionsupporting

confidence: 54%

Aerodynamic research of a racing car based on wind tunnel test and computational fluid dynamics

Wang

Liu

et al. 2018

MATEC Web Conf.

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“…Cogotti in [24] describes measurements on fullsize models in the process of developing new cars in the wind tunnel of the Pininfarina research centre, including the development of a methodology for such measurements in the tunnel. Experimental measurements for various body modifications have been performed by Altinisik [25]. The aim was to fine-tune the aerodynamic properties while preserving the original design as much as possible.…”

Section: Working Methodsmentioning

confidence: 99%

Effect of the Aerodynamic Elements of the Hatchback Tailgate on the Aerodynamic Drag of the Vehicle

Fábián¹,

Huňady²,

Kupec³

et al. 2022

Adv. Sci. Technol. Res. J.

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The paper deals with the possibilities of reducing aerodynamic drag and modifying airflow in the rear of a hatchback vehicle. This body type is characterised by the formation of turbulent flow behind the vehicle, which has a significant effect on the fouling of the tailgate, including the window. By modifying the geometry of components such as the roof spoiler and additional aerodynamic finlets on the sides of the rear window, the airflow is optimised to reduce aerodynamic drag and thus fuel consumption. Three spoiler designs are proposed, one of which is processed to prototype quality using CAD tools. The body of the vehicle with this design is subjected to CFD analysis and evaluated in terms of the given criteria. The results of the simulations are compared with a model of a production vehicle and a sports version vehicle to assess the effect of the geometry on the flow parameters.

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“…Outdoor tests are inevitably interfered with by natural winds [35,36]. Common outdoor tests must take into account the impact of natural wind on several aspects, such as the impact of natural wind on the safety of high-speed rail [37], the vehicle coast-down test [38][39][40], aircraft landing safety, building ventilation [41], and vehicle driving safety [42], and so on. The transiting test method of the structural aerodynamic coefficients is also an outdoor road test exposed to the wind environment.…”

Section: Introductionmentioning

confidence: 99%

Effect of Natural Wind on the Transiting Test for Measuring the Aerodynamic Coefficients of Structures

Zhu

Liu

et al. 2021

Symmetry

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The aerodynamic coefficients transiting test is a new method for measuring the structural aerodynamic coefficients using the wind generated by a moving vehicle. However, the effect and correction of natural wind on the transiting test has not been studied. Hence, in this study, the investigation of the aerodynamic force and pressure measurements on a special triangular prism model is simulated through the transiting test under different natural wind conditions for 30° and 90° angles of wind incidence. Force and pressure measurement results in the transiting test are used to describe and explain the effect of natural wind in the range of 0–3.0 m/s on the aerodynamic coefficients of the triangular prism qualitatively and quantitatively. The results show that the driving wind field of the vehicle, aerodynamic force coefficient, and aerodynamic pressure coefficient are significantly influenced by strong natural wind greater than 1.71 m/s, which must be considered and so it is recommended that the structure aerodynamic coefficients transiting test should be conducted under the condition that the natural wind is less than 1.71 m/s. In addition, the method of two-direction round-trip measurement is proposed to modify the effect of natural wind on transiting tests.

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Aerodynamic coastdown analysis of a passenger car for various configurations

Cited by 11 publications

References 12 publications

Aerodynamic research of a racing car based on wind tunnel test and computational fluid dynamics

Aerodynamic research of a racing car based on wind tunnel test and computational fluid dynamics

Effect of the Aerodynamic Elements of the Hatchback Tailgate on the Aerodynamic Drag of the Vehicle

Effect of Natural Wind on the Transiting Test for Measuring the Aerodynamic Coefficients of Structures

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