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首页> 外文期刊>SAE International Journal of Passenger Cars - Mechanical Systems >The Thermal and Aerodynamic Development of a Cooling and Heat Resistance Package for a New Hybrid Sports Car
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The Thermal and Aerodynamic Development of a Cooling and Heat Resistance Package for a New Hybrid Sports Car

机译：新型混合动力跑车的冷却和耐热组件的热和空气动力学开发

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A sports car exhibits many challenges from an aerodynamic point of view: drag that limits top speed, lift - or down force - and balance that affects handling, brake cooling and insuring that the heat exchangers have enough air flowing through them under several vehicle speeds and ambient conditions. All of which must be balanced with a sports car styling and esthetic. Since this sports car applies two electric motors to drive front axle and a high-rev V6 turbo charged engine in series with a 9-speed double-clutch transmission and one electric motor to drive rear axle, additional cooling was required, yielding a total of ten air cooled-heat exchangers. It is also a challenge to introduce cooling air into the rear engine room to protect the car under severe thermal conditions. This paper focuses on the cooling and heat resistance concept. The experimental and computational developments of ten air cooled-heat exchangers are described with the tradeoffs that were required during the development process. Since the cooling and heat resistance package was being developed as the vehicle concept and styling were coming together, CFD played a large role in the heat exchanger size, location, heat resistance package and performance. Specific correlation tests were conducted to gain a greater understanding of the performance of some of the heat exchangers. Ultimately, the flow through all of the heat exchangers was confirmed as meeting all the targets at the first wind tunnel test and also heat resistance package was fixed with significant CFD support.
机译：从空气动力学的角度来看，跑车面临着许多挑战：限制最高速度的阻力，提升力或向下力-平衡会影响操作，制动冷却并确保热交换器在多种车速下有足够的空气流通。环境条件。所有这些都必须与跑车的造型和美观保持平衡。由于该跑车采用两台电动机驱动前轴，而高转速V6涡轮增压发动机与9速双离合器变速箱和一台电动机驱动后轴串联，因此需要额外的冷却，从而产生总共十个风冷热交换器。将冷却空气引入后机舱以在严酷的高温条件下保护汽车也是一个挑战。本文着重介绍冷却和耐热的概念。描述了十个风冷换热器的实验和计算开发情况，并在开发过程中需要进行权衡。由于冷却和耐热套件是在车辆概念和样式融合在一起的情况下开发的，因此CFD在热交换器的尺寸，位置，耐热套件和性能方面起着重要作用。进行了特定的相关性测试，以加深对某些热交换器性能的了解。最终，通过所有换热器的流量在第一次风洞测试中被确认符合所有目标，并且耐热组件在重要的CFD支持下得以固定。

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