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首页> 外文期刊>The Aeronautical Journal >Aerodynamic effectiveness of the flow of exhaust gases in a generic formula one car configuration
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Aerodynamic effectiveness of the flow of exhaust gases in a generic formula one car configuration

机译：通用一级方程式赛车配置中废气流的空气动力学效率

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摘要

The effects of the flow of exhaust gases intentionally orientated on the rear wing element of a generic Formula One car body have been studied. A qualitative analysis of the effectiveness of a cold nitrogen jet on a NACA 0012 type of aerofoil has been conducted. The Reynolds number of the jet was 13,000, based on the jet velocity and diameter, and of the bodywork was 54,000, based on the free stream velocity and bodywork length. The lift coefficient was measured via a three-component strain-gauge force balance at four different ground-to-aerofoil heights (32, 45, 60 and 90mm) and incidence range -20 to +20 degrees. The surface flow patterns were visualised using the oil flow technique and were compared with numerical simulations. Pressure measurements were conducted using pressure tappings. The CFD solver was FLUENT. The RNG k-ε model was selected to solve the turbulent flow transport equations. The numerical study also comprised the investigation of the aspiration generated by exhaust gases when these are ejected inside a duct of greater diameter. A parametric investigation relating the relative diameter of exhaust pipe and outer duct and the relative overlap between the sides of the duct and the exhaust pipe was performed.
机译：研究了故意定向的废气流对通用一级方程式赛车车体的尾翼元件的影响。对冷氮射流对NACA 0012型机翼的有效性进行了定性分析。基于射流的速度和直径，射流的雷诺数为13,000，基于自由流的速度和射流长度，车身的雷诺数为54,000。升力系数是通过三分量应变计力平衡在四个不同的地面到机翼高度（32、45、60和90mm）和-20至+20度的入射角范围内测量的。使用油流技术将表面流动模式可视化，并与数值模拟进行比较。使用压力攻丝进行压力测量。 CFD求解器为FLUENT。选择了RNGk-ε模型来求解湍流传输方程。数值研究还包括对当废气排放到较大直径的导管内时产生的抽吸现象的研究。进行了有关排气管和外部管道的相对直径以及管道与排气管的侧面之间的相对重叠的参数研究。

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