航空学报 > 2023, Vol. 44 Issue (19): 128391-128391   doi: 10.7527/S1000-6893.2023.28391

电弧风洞NO平面激光诱导荧光可视化方法与试验验证

袁勋1,2, 于欣1,2, 彭江波1,2(), 曾徽3, 欧东斌3   

  1. 1.哈尔滨工业大学 可调谐激光技术国家级重点实验室,哈尔滨 150001
    2.哈尔滨工业大学 光电子技术研究所,哈尔滨 150001
    3.中国航天空气动力技术研究院 电弧等离子体应用装备北京市重点实验室,北京 100083
  • 收稿日期:2022-12-12 修回日期:2023-02-03 接受日期:2023-03-03 出版日期:2023-10-15 发布日期:2023-03-17
  • 通讯作者: 彭江波 E-mail:13936344559@126.com
  • 基金资助:
    国家自然科学基金(62175053┫; 黑龙江省自然科学基金┣LH2021F028┫; 哈尔滨工业大学科研创新基金┣HIT.NSRIF202245)

Research and experimental verification of NO-PLIF visualization method in arc-heated wind tunnel

Xun YUAN1,2, Xin YU1,2, Jiangbo PENG1,2(), Hui ZENG3, Dongbin OU3   

  1. 1.National Key Laboratory of Science and Technology on Tunable Laser,Harbin Institute of Technology,Harbin 150001,China
    2.Institute of Opto-Electronic,Harbin Institute of Technology,Harbin 150001,China
    3.Beijing Key Laboratory of Arc Plasma Application Equipment,China Academy of Aerospace Aerodynamics,Beijing 100083,China
  • Received:2022-12-12 Revised:2023-02-03 Accepted:2023-03-03 Online:2023-10-15 Published:2023-03-17
  • Contact: Jiangbo PENG E-mail:13936344559@126.com
  • Supported by:
    National Natural Science Foundation of China(62175053);Heilongjiang Provincial Natural Science Foundation of China(LH2021F028);Scientific Research Innovation Foundation in Harbin Institute of Technology(HIT.NSRIF202245)

摘要:

高焓气流平面激光诱导荧光(PLIF)可视化是近年来发展起来的一种高效的电弧风洞流场诊断方法,但由于大功率电弧风洞测量环境较为恶劣,相关研究工作开展难度大。面向解决低密度宽温度范围激发、远距离探测和背景辐射强等电弧风洞高焓流场测量难题,以NO作为示踪粒子,优化选择了适合宽温度范围的激发波长,设计了根据试验模型需求可变攻角与高度的片光整形系统,并采用大通量、高增益探测系统,在大功率电弧风洞上开展了NO-PLIF可视化试验,获得了自由流和平板模型边界层不同攻角、不同壁面高度的NO-PLIF图像,为飞行器热防护研究提供基础数据支撑。

关键词: 高焓气流, 电弧风洞, 平面激光诱导荧光技术(PLIF), 一氧化氮(NO), 飞行器热防护

Abstract:

Planar Laser-Induced Fluorescence (PLIF) visualization of high enthalpy flow, which is developed in recent years, is an efficient method for diagnosing the flow field in the arc-heated wind tunnel. However, due to the hostile measurement environment in the high-power arc-heated wind tunnel, it is difficult to carry out the related research. To address the difficulties of high enthalpy flow measurement in the arc-heated wind tunnel with low density and wide temperature range excitation, long distance detection and strong background radiation, we chose Nitric Oxide (NO) as the tracer particle, selected the excitation wavelength suitable for a wide temperature range through optimization, and designed a laser sheet shaping system with variable attack angles and heights according to the requirements of the test model. Moreover, a large flux and high gain detection system is utilized to carry out NO-PLIF visualization experiments in the high-power arc-heated wind tunnel. We obtained the NO-PLIF images of free-flow, and the NO-PLIF images of shock layers in flat plate models with different attack angles and wall surface heights, which provides basic data support for thermal protection research of aircraft.

Key words: high enthalpy flow, arc-heated wind tunnel, Planar Laser-Induced Fluorescence (PLIF), Nitric Oxide (NO), thermal protection of aircraft

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