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波长调制-TDLAS技术测量风洞中氧气流速方法研究

Study on Oxygen Velocity Measurement in Wind Tunnel by Wavelength Modulation - TDLAS Technology

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摘要

为了有效地测量风洞中的气体流速,以激光多普勒频移原理为基础,结合波长调制可调谐二极管激光吸收光谱(TDLAS)技术,利用HITRAN 数据库,选取氧气(O2)分子在13144.5 cm-1附近的吸收谱线作为研究对象。在软件中建立了气体流速测量模型,模拟分析了流速测量结果;在实验室中利用超声风洞装置,建立了一套基于波长调制-TDLAS技术的流速测量系统,通过实验,提取出O2的二次谐波信号,根据O2分子吸收谱线的二次谐波信号的频移量反演风洞中的气流速度。实验结果表明,在实验室环境下,系统测量流速达到707.6 m/s,符合超声风洞的设计,测量误差范围为5.47%。实验结果为基于波长调制-TDLAS方法测量流速的小型化系统研制以及飞行实验进行了前期准备。

Abstract

In order to effectively measure gas flow rate in wind tunnel, based on the principle of laser Doppler frequency shift, combined with wavelength modulation tunable diode laser absorption spectroscopy (TDLAS) technology, using HITRAN database, oxygen (O2) molecular absorption spectral line near 13144.5 cm-1 is selected as the research object. A gas flow measurement model is built in the software, the flow velocity measurement results are simulated and analyzed. Supersonic wind tunnel devices are used in the laboratory to set up a set of wavelength modulation flow measurement system based on TDLAS technology. Through the experiment, second harmonic signal of O2 is extracted. According to the second harmonic of O2 molecular absorption spectral line frequency shift, the flow velocity in the wind tunnel is reversed. The experimental results show that, in the laboratory environment, velocity measured by the system reaches 707.6 m/s. The experimental results are consistent with the supersonic wind tunnel design, and the measurement error is 5.47% . The results prepare for the research of system miniaturization, which measures flow rate based on wavelength modulation - TDLAS, and flight experiments.

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中图分类号:O346

DOI:10.3788/cjl201542.0715001

所属栏目:光谱学

基金项目:国家自然科学基金(61108034)、国家自然科学基金青年基金(61205151)、中国科学院先导专项(XDA05040102)

收稿日期:2014-12-29

修改稿日期:2015-02-03

网络出版日期:--

作者单位    点击查看

贾良权:中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽 合肥 230031中国科学院大学, 北京 100049
刘文清:中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽 合肥 230031
阚瑞峰:中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽 合肥 230031
刘建国:中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽 合肥 230031
姚路:中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽 合肥 230031中国科学院大学, 北京 100049
许振宇:中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽 合肥 230031
戴云海:中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽 合肥 230031
魏敏:中国科学院安徽光学精密机械研究所环境光学与技术重点实验室, 安徽 合肥 230031中国科学技术大学, 安徽 合肥 230031

联系人作者:贾良权(lqjia@aiofm.ac.cn)

备注:贾良权(1984—),男,博士研究生,主要从事波长调制TDLAS质量流量测量方法方面的研究。

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引用该论文

Jia Liangquan,Liu Wenqing,Kan Ruifeng,Liu Jianguo,Yao Lu,Xu Zhenyu,Dai Yunhai,Wei Min. Study on Oxygen Velocity Measurement in Wind Tunnel by Wavelength Modulation - TDLAS Technology[J]. Chinese Journal of Lasers, 2015, 42(7): 0715001

贾良权,刘文清,阚瑞峰,刘建国,姚路,许振宇,戴云海,魏敏. 波长调制-TDLAS技术测量风洞中氧气流速方法研究[J]. 中国激光, 2015, 42(7): 0715001

被引情况

【1】王明明,戴伟国,杨荟楠,陈军,苏明旭,蔡小舒. 基于可调谐半导体激光吸收光谱技术的西林瓶检漏方法. 激光与光电子学进展, 2017, 54(8): 83004--1

【2】阚瑞峰,夏晖晖,许振宇,姚路,阮俊,范雪丽. 激光吸收光谱流场诊断技术应用研究与进展. 中国激光, 2018, 45(9): 911005--1

【3】聂伟,阚瑞峰,杨晨光,陈兵,许振宇,刘文清. 可调谐二极管激光吸收光谱技术的应用研究进展. 中国激光, 2018, 45(9): 911001--1

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