FSAE赛车底盘尾流扩散器仿真分析与设计  

Influence of Ground Effect on FSAE Car Diffuser Design

作　　者：杨勇[1] 尹欢[1] 彭婧[1] 

机构地区：[1]太原理工大学机械工程学院,太原030024

出　　处：《机械科学与技术》2017年第4期632-636,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：太原理工大学校青年基金项目(2014TD034)资助

摘　　要：研究了地面效应对底盘尾流扩散器形态的影响。并在满足FSAE赛车设计规则要求的前提下,对FSAE赛车底盘尾流扩散器进行设计。利用CDF数值仿真技术对所设计的扩散器进行流场模拟、分析及优化以进一步提高扩散器工作效率,从而为赛车提供更多下压力,使赛车的操控稳定性和安全性有所提升。分析测得设计底盘扩散器后的赛车气动升力系数C_L从原车的0.391下降到-0.371,气动阻力系数C_D由0.589变为0.583。This paper describes the influence of ground effect on the form of diffuser. The FSAE car diffuser is designed on the premise of meeting the requirements of FSAE car design rules. The computational fluid dynamics （CFD） technique is adopted to simulate the diffuser flow field, and the diffuser is further optimized to enhances its working efficiency, which provides more downforce for the ear and improves the handling stability and safety of the car. The analysis show that the lift coefficient of the FSAE ear is decreased from 0.391 originally to -0.371 with the designed diffuser, and the drag coefficient changes from 0.589 into 0.583.

关 键 词：FSAE赛车 地面效应 底盘尾流扩散器 CFD数值仿真 空气动力学 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] O355[自动化与计算机技术—计算机科学与技术]