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首页> 外文会议>European Automotive CFD(Computational Fluid Dynamics) Conference; 20050629-30; Frankfurt(DE) >Aerodynamics of Formula SAE Racing Cars Analysis of Front and Rear Wing Design
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Aerodynamics of Formula SAE Racing Cars Analysis of Front and Rear Wing Design

机译：Formula SAE赛车的空气动力学前后翼设计分析

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摘要

The Formula SAE event is a low speed racing event with an average speed of 55 km/hr. Designing an aerodynamics package for a racing car competing in this event, provides the challenge of producing high downforce at (very) low speeds. The use of CFD in conjunction with wind tunnel experiments has helped in reducing the design time significantly. This paper highlights the use of FLUENT to design race car aerodynamics. It shows how fairly simple meshing schemes and boundary layer meshing tools available in GAMBIT can give reasonably accurate predictions for the flow over complex wings. The CFD results are compared to the experiments and show that the coefficient of lift can be predicted within a small percentage error, but the coefficient of drag is not predicted very well. This error in drag estimation is not significant in the FSAE application, but could be for other racing events. Important aerodynamic design issues including element gap size, placement of the rear wing in the wake of the helmet and the front wing in ground effect can evaluated quickly and fairly accurately using CFD tools.
机译：Formula SAE赛事是低速赛车赛事，平均速度为55 km / hr。为参加本次比赛的赛车设计空气动力学套件，带来了在（非常）低速下产生高下压力的挑战。将CFD与风洞实验结合使用有助于显着减少设计时间。本文重点介绍了FLUENT在设计赛车空气动力学方面的应用。它显示了GAMBIT中可用的相当简单的网格划分方案和边界层网格划分工具如何对复杂机翼上的流动给出合理准确的预测。将CFD结果与实验进行比较，结果表明可以在很小的百分比误差范围内预测升力系数，但不能很好地预测阻力系数。阻力估计中的此错误在FSAE应用程序中并不重要，但可能与其他赛车事件有关。可以使用CFD工具快速而准确地评估重要的空气动力学设计问题，包括元素间隙尺寸，后翼在头盔尾部的位置以及前翼在地面的影响。

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