Aerodynamic design optimization of rear body shapes of a sedan for drag reduction

Song, Kisun; Kang, Sam-Sik; Jun, Sangook; Park, H. I.; Kee, Jung-Do; Kim, Kyu Hong; Lee, D. H.

doi:10.1007/s12239-012-0091-7

Cited by 49 publications

(32 citation statements)

References 11 publications

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“…The aerodynamic surface pressure affecting infiltration (dP aero ) is widely distributed along with the trunk gaps Song et al, 2012). However, it is not feasible to measure aerodynamic pressures across the wide-spread reartrunk leakage.…”

Section: Model Calibrationmentioning

confidence: 99%

Ultrafine particle infiltration into passenger vehicles. Part II: Model analysis

Lee

Stenstrom

Zhu

2015

Transportation Research Part D: Transport and Environment

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Section: Model Calibrationmentioning

confidence: 99%

Ultrafine particle infiltration into passenger vehicles. Part II: Model analysis

Lee

Stenstrom

Zhu

2015

Transportation Research Part D: Transport and Environment

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“…The total drag coefficients were greatly reduced at diffuser angle at 9.8ᵒ. Song et al (2012) investigated drag reduction by modifying rear shape of sedan car model. The aerodynamic variables optimized by changing rear body shape and flow field around the car profile were studied.…”

Section: Introductionmentioning

confidence: 99%

Empirical and Numerical Analysis of Aerodynamic Drag on a Typical SUV Car Model at Different Locations of Vortex Generator

Selvaraju¹,

Parammasivam

2019

JAFM

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The aerodynamic characteristics are concerned with the fuel consumption rate and the stability of a high speed vehicle. The current research aims at studying the aerodynamic behavior of a typical SUV vehicle model mounted with the vortex generator (VG) at various linear positions with reference to its rear roof edge. The flow field around the vehicle model was observed at different wind speed conditions. It had been determined that at the instance of lower wind speed, the VG had minimal effects of aerodynamic drag on the vehicle body. However, at the instance of higher wind speed conditions the magnitude of the drag force decreased significantly. Vehicles move at higher speeds in the highways, location of the VG varied towards the upstream of the vehicle due to early flow separation. Therefore test were conducted at different wind speeds and locations of VG. The numerical simulation conduced in this study provides flow characteristics around the vehicle model for different wind speeds. The realizable k−ε model was used to simulate and validate the empirical results in an effective manner. By using experimental data, the drag was reduced by 9.04 % at the optimized VG location. The results revealed that the induced aerodynamic drag would determine the best car shape. This paper provides a better understanding of VG positioning for enhanced flow separation control.

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“…Sirenko et al [4] had shown higher fuel savings using rear screens and rear fairings for a light-duty General Motors SUV. Song et al [5] performed aerodynamic optimization of a sedan for drag reduction using artificial neural networks and CFD approach. Similar to Song, Muyl et al [6] performed aerodynamic external vehicle shape optimization by stochastic genetic algorithms and deterministic Broyden-Fletcher-Goldfarb-Shanno (BFGS) hill-climb approach.…”

Section: Introductionmentioning

confidence: 99%

Combined Aero and Underhood Thermal Analysis for Heavy Duty Trucks

Vegendla

Sofu

Saha

et al. 2017

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Aerodynamic design optimization of rear body shapes of a sedan for drag reduction

Cited by 49 publications

References 11 publications

Ultrafine particle infiltration into passenger vehicles. Part II: Model analysis

Ultrafine particle infiltration into passenger vehicles. Part II: Model analysis

Empirical and Numerical Analysis of Aerodynamic Drag on a Typical SUV Car Model at Different Locations of Vortex Generator

Combined Aero and Underhood Thermal Analysis for Heavy Duty Trucks

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