Aerodynamic Performance Improvement of a New Type Wing for Formula SAE Car
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摘要: 赛车的空气动力学特性决定着赛车的设计优劣和性能,其中气动阻力系数和气动负升力系数是决定气动特性的两个关键系数。采用数值模拟方法对赛车的空气动力性能有重要影响的后定风翼进行了翼型、攻角、离地间隙等结构参数下的气动分析和对比,根据阻力系数和负升力系数的变化规律以及匹配原则,确定了最佳的定风翼方案。结果表明:曲率较大、翼身较厚的翼型会产生较大的升力,攻角45°为最佳攻角方案,离地间隙的最佳值为88 mm。Abstract: Aerodynamic characteristics determine the design quality and performance of the Formula SAE(FSAE)car,and two key coefficients of aerodynamic characteristics are drag coefficient and negative lift coefficient. Rear wing has great influence on the aerodynamic performance of a FSAE car. Numerical methods were used to analyze and contrast the aerodynamic performance of the wing on different structural parameters such as wing profile,angle of attack and ground clearance. According to the varying laws of drag coefficient and negative lift coefficient as well as matching principle,the best design scheme of the wing was determined. The results show that a wing with large curvature and thick body can provide more lift,the best angle of attack is 45�and the optimum value for ground clearance is 88 mm.
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Key words:
- aerodynamics /
- drag coefficient /
- FSAE /
- negative lift coefficient /
- numerical methods
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