摘要
基于激光干涉原理,提出了测量流体二维温度场分布方法.利用流体折射率受温度影响的性质,将流体的温度变化转换为干涉条纹移动量进行表达和测量.以迈克耳孙干涉以为模型,搭建了温度场测量实验系统,使用可精确控温的电烙铁对系统进行定标,得到条纹移动量随空气温度的变化关系,并利用热风枪和打火机作为参考物进行了实验效果的验证.实验结果显示,热风枪的最高温度为178.42℃,与实际温度(180℃)误差仅为1.6℃,能且真实地还原2种参考物的二维温度场分布.
Based on the feature of laser interference,a new method of temperature distribution measurement was presented.Since the refractive index of fluid is strongly related to its temperature,the change of temperature was expressed and measured by the change of the interference fringe.Using the Michelson interferometer as a model,a temperature field measurement device was set up.The device was calibrated using an electric soldering iron with precise temperature control.The relationship between fringe displacement and air temperature was obtained.Two different temperature fields of air heated by heat gun and flame,respectively,were measured.Results showed that the highest temperature of the front field was 178.42℃,which was only about 1.6℃lower than the actual temperature(180℃).Additionally,two-dimensional temperature distribution in fluid could also be obtained by this method.
作者
黄和
王亮星
李佼洋
蔡志岗
王嘉辉
HUANG He;WANG Liang-xing;LI Jiao-yang;CAI Zhi-gang;WANG Jia-hui(School of Physics, SUN Yat-sen University, Guangzhou 510275, China)
出处
《物理实验》
2019年第5期37-41,46,共6页
Physics Experimentation
基金
广东省自然科学基金(No.2015A030310388
No.2016A030313333)
关键词
激光干涉
流体温度测量
温度分布
laser interference
fluid temperature measurement
temperature distribution
