摘要
介绍了粒子图像测速技术(PIV)的基本原理和试验过程,结合汽车空气动力学的需要将PIV试验应用到汽车风洞中测量汽车周围流场流动状况。根据研究内容探索并设计了适合进行汽车模型风洞试验的试验方案,分别针对GTS卡车模型周围流场和实车后视镜区域流场进行测量试验。得到了汽车周围流场截面的流线显示和瞬态、稳态的速度数据,并对比数值模拟结果进行了分析。同时介绍了应用PIV的激光做的激光流态显示。本文的研究为进行汽车空气动力学涉及的汽车模型周围低速流动时流动状况的测量试验提供了经验。
The theory of the particle image velocimetry(PIV) and the scheme of the test of PIV were introduced in this paper.PIV was applied to investigate the flow field around automobile in the automotive wind tunnel on demand of aerodynamic research.According the aim of the research,we designed the scheme of PIV test in the automobile wind tunnel.The flow field around GTS truck model and back mirror were investigated.The streamline of the flow field on the section plane was showed and the steady and transient velocity vector filed was gained.And the same time the test results was analyzed contrast with results of CFD.It was applied to show the flow state when laser of PIV lightens the frog.It is experience to take some aerodynamic tests of car model in automotive wind tunnel in low air speed.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2009年第S1期83-87,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(10802033)
汽车动态模拟国家重点实验室开放基金项目(20071309)
国家"985工程"汽车科技创新平台
关键词
空气动力学
汽车风洞
速度场
PIV
aerodynamics
automotive wind tunnel
velocity flow field
particle image velocimetry
