基于多孔介质材料和仿生设计的汽车阻流板减阻机理

中国机械工程

基于多孔介质材料和仿生设计的汽车阻流板减阻机理

袁志群1,2,4;谷正气3

1.厦门理工学院机械与汽车工程学院，厦门，361024
2.中南大学轨道交通安全教育部重点实验室，长沙，410075
3.湖南大学机械与运载工程学院，长沙，410082
4.福建省客车及特种车辆研发协同创新中心，厦门，361024

出版日期:2019-04-10 发布日期:2019-04-04
基金资助:
国家自然科学基金资助项目（51875186，51775395）；
福建省中青年教师教育科研项目（JAT170414）；
福建省科技创新平台项目（2016H2003）；
福建省普通公路科研项目（201010）；
厦门理工学院"科研攀登计划"资助项目（XPDKQ18005）

Aerodynamic Drag Reduction Mechanism of Automobile Spoiler Based on Porous Media and Bionic Design

YUAN Zhiqun1,2,4;GU Zhengqi3

1.School of Mechanical and Automotive Engineering,Xiamen University of Technology,Xiamen,Fujian,361024
2.Central South University,Key Laboratory of Traffic Safety on Track,Ministry of Education,Changsha,410075
3.College of Mechanical and Vehicle Engineering,Hunan University,Changsha,410082
4.Fujian Collaborative Innovation Center for R&D of Coach and Special Vehicle,Xiamen,Fujian,361024

Online:2019-04-10 Published:2019-04-04

摘要/Abstract

摘要： 为了解决传统阻流板自身气动阻力过大的问题，提出了多孔介质阻流板和仿生阻流板两种新结构方案。利用计算流体动力学方法分析了两种方案在不同横摆角工况下的气动阻力变化规律，揭示了两种新结构的减阻机理;相比传统阻流板，两种新结构的气动阻力峰值分别减小了3.3%和4.7%。在此基础上，提出了仿生阻流板和侧裙的组合结构方案，解决了传统阻流板中大横摆角时整车气动阻力增大的问题；相比传统阻流板，组合结构的气动阻力峰值减小了10.7%。比例模型风洞试验验证了所提方案的正确性。

关键词: 气动阻力, 多孔介质阻流板, 仿生阻流板, 横摆角, 侧裙, 风洞试验

Abstract: In order to reduce the aerodynamic drag of conventional spoilers, two new structural schemes of porous medium spoilers and bionic spoilers were designed. The variation laws of aerodynamic drag of two schemes were analyzed under different yaw angles by computational fluid dynamics method, and the aerodynamic drag reduction mechanisms of two new structures were revealed. Compared with the conventional spoilers, the aerodynamic drag peak of two new structures were decreased by 3.3% and 4.7% respectively. A combined structure scheme of bionic spoilers and side skirts was designed to solve the problems of increasing aerodynamic drag caused by conventional spoilers at large yaw angles. Compared with the conventional spoilers, the aerodynamic drag peak of the combined structures decreased by 10.7%. The proposed method was validated by scale model wind tunnel test.

Key words: aerodynamic drag, porous medium spoiler, bionic spoiler, yaw angle, side skirt, wind tunnel test

中图分类号:

U462.1

袁志群1,2,4;谷正气3. 基于多孔介质材料和仿生设计的汽车阻流板减阻机理[J]. 中国机械工程.

YUAN Zhiqun1,2,4;GU Zhengqi3. Aerodynamic Drag Reduction Mechanism of Automobile Spoiler Based on Porous Media and Bionic Design[J]. China Mechanical Engineering.

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