小型风洞的设计与实验  

Design and Experiment of a Small-sized Wind Tunnel

作　　者：张进治[1] 谢亮[1] 刘立强[1] 陈富强[1] 高旭旭 

机构地区：[1]北方工业大学理学院,北京100144

出　　处：《北方工业大学学报》2016年第3期66-71,共6页Journal of North China University of Technology

基　　金：北方工业大学2015年度教育教学改革课题

摘　　要：风洞试验是进行汽车、飞机空气动力学研究的重要手段.本文利用ARM STM32与微型拉压力传感器、气压压力传感器、风速传感器,以及变频风机、洞体设计出一种小型风洞.通过风洞对3种不同形状汽车模型进行测量,得出了它们的风阻系数(轿车0.26,SUV车0.36,卡车0.43);通过对飞机模型的测量,得出了飞机升力及俯仰角的关系.实测证明,该风洞可以较准确地对模型的空气动力性能进行定量及定性分析.Wind tunnel experiment is an important method for studying air dynamics of vehicles and aircrafts.In this paper,a small-sized wind tunnel is designed by using ARM STM32,micro tension pressure sensor,air pressure sensor,wind speed sensor,frequency conversion fan and a cave.With this wind tunnel,the drag coefficients of three cars of different models are measured（0.26 for a red saloon car,0.36 for a SUV and 0.43 for a black truck）.Through the measurement of the model aircraft,the relationship between the lift and pitch angle of the aircraft is obtained.The results indicate that the wind tunnel can be used to make an accurate analysis of the aerodynamic performance of the models.

关 键 词：风洞 风速 风阻系数 压力 升力 

分 类 号：O313.3[理学—一般力学与力学基础]