基于数值模拟的节能车车身优化设计

Aerodynamic Optimization Design of the Energy-saving Car Body Based on Numerical Simulation

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 aerodynamic around energy-saving car body is determined based on the CFD theory, in combination of optimization design of body's shape. The result shows that: optimization design of car's shape can reduce the shed vortex behind the car, and also wind resistance coefficient remarkable. Research results have some reference value for improving the aerodynamic design of energy-saving car.