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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2015.11
- 수록면
- 788 - 795 (8page)
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This paper presents the development on the Aerodynamic performance of the 2016 Chevrolet the Next Spark. This 2016 Spark is fully changed on the exterior styling and the architecture comparing from its previous version released in 2009 and it was conducted to improve Aerodynamic performance to support fuel economy and fuel consumption.
To reduce the drag of the 2016 Spark, Exterior skin is fully optimized to have best Aerodynamic performance. And several Aerodynamic treatments are applied such as flat underbody, low leakage for cooling flow, and add-on Aerodynamics devices.
Biggest contribution on drag of the vehicle is coming from exterior surface and underbody shape. This 2016 Spark was developed to have better drag coefficient on these exterior surface and underbody shape. For reducing drag on the exterior surface, it was conducted to optimize the exterior surface cooperated with Exterior studio from early development stage. In this development, Aero was involved from proportion development of the vehicle and theme development. This new vehicle is able to get 58 counts drag reduction from its initial styling model. And for reducing drag on the underbody structure, this vehicle is applied not to have vertical wall on the underbody structure decreasing pressure load. General vehicle and previous version of the Spark have vertical wall on the underbody structure against flow direction to support vehicle safety, but this 2016 Spark is adopted and designed flat underbody structure considering not hurting vehicle safety in early stage of development. This concept was contributed to reduce drag on the underbody structure.
Also, this vehicle is developed low leakage cooling flow between the grill and the radiator. The 2016 Spark is reduced 8% - 19% in each powertrain variant comparing to the previous version. This improved cooling flow leakage contributes drag reduction decreasing non-effective flow goes into the engine room.
And this vehicle adopted the enhanced airdam, Aerodynamic friendly OSRVM, D-pillar applique integrated roof spoiler, and edged side corner on taillamp, etc.
In this development, Aero spends 344 hours for wind tunnel test of the 2016 Spark. And, there was 38 simulation runs for Aero CFD analysis and there was 5 times architecture change reflecting changed body structure. This development was supported to reduce drag 8.3% from the previous Spark and the 2016 Spark is able to lead Aerodynamic performance in the A segment.
To reduce the drag of the 2016 Spark, Exterior skin is fully optimized to have best Aerodynamic performance. And several Aerodynamic treatments are applied such as flat underbody, low leakage for cooling flow, and add-on Aerodynamics devices.
Biggest contribution on drag of the vehicle is coming from exterior surface and underbody shape. This 2016 Spark was developed to have better drag coefficient on these exterior surface and underbody shape. For reducing drag on the exterior surface, it was conducted to optimize the exterior surface cooperated with Exterior studio from early development stage. In this development, Aero was involved from proportion development of the vehicle and theme development. This new vehicle is able to get 58 counts drag reduction from its initial styling model. And for reducing drag on the underbody structure, this vehicle is applied not to have vertical wall on the underbody structure decreasing pressure load. General vehicle and previous version of the Spark have vertical wall on the underbody structure against flow direction to support vehicle safety, but this 2016 Spark is adopted and designed flat underbody structure considering not hurting vehicle safety in early stage of development. This concept was contributed to reduce drag on the underbody structure.
Also, this vehicle is developed low leakage cooling flow between the grill and the radiator. The 2016 Spark is reduced 8% - 19% in each powertrain variant comparing to the previous version. This improved cooling flow leakage contributes drag reduction decreasing non-effective flow goes into the engine room.
And this vehicle adopted the enhanced airdam, Aerodynamic friendly OSRVM, D-pillar applique integrated roof spoiler, and edged side corner on taillamp, etc.
In this development, Aero spends 344 hours for wind tunnel test of the 2016 Spark. And, there was 38 simulation runs for Aero CFD analysis and there was 5 times architecture change reflecting changed body structure. This development was supported to reduce drag 8.3% from the previous Spark and the 2016 Spark is able to lead Aerodynamic performance in the A segment.
목차
Abstract
1. 서론
2. 풍동 시험과 수치 해석 기법
3. 공력 성능(항력 계수) 목표 설정(Target setup on coefficient of drag)
4. 2016 SPARK 공력 성능 개발 (Exterior skin development)
5. 결론
References
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