本文以参加本田节能车大赛的赛车为研究对象,对车身空气动力学特性进行了CFD数值模拟,并在此基础上对外形进行了优化。结果表明:由于原车身结构设计缺陷,使得车尾产生较大的旋涡区,造成了较大的空气阻力;优化后的车身外形能够显著减小空气阻力。本文的计算结果为进一步提高节能车的性能提供重要依据。 In this paper, the racing car participating in the Honda Energy-saving Vehicle Race is taken as the research object. The CFD numerical simulation of the aerodynamic characteristics of the vehicle body is carried out. Based on this, the shape is optimized. The results show that due to the structural defects of the original body structure, a larger vortex area is created at the rear of the vehicle, resulting in greater air resistance. The optimized body shape can significantly reduce the air resistance. The results of this paper provide an important basis for further improving the performance of energy-saving vehicles.