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电弧射流激励器光谱诊断研究

袁野 田雷超 郭成 赵青

袁野, 田雷超, 郭成, 赵青. 电弧射流激励器光谱诊断研究[J]. 中国光学(中英文). doi: 10.37188/CO.2022-0097
引用本文: 袁野, 田雷超, 郭成, 赵青. 电弧射流激励器光谱诊断研究[J]. 中国光学(中英文). doi: 10.37188/CO.2022-0097
YUAN Ye, TIAN Leichao, GUO Cheng, ZHAO Qing. Spectral diagnosis of an arc jet actuator[J]. Chinese Optics. doi: 10.37188/CO.2022-0097
Citation: YUAN Ye, TIAN Leichao, GUO Cheng, ZHAO Qing. Spectral diagnosis of an arc jet actuator[J]. Chinese Optics. doi: 10.37188/CO.2022-0097

电弧射流激励器光谱诊断研究

doi: 10.37188/CO.2022-0097
基金项目: 四川省科技厅重点研发项目(No. 2021YFG0369);四川省国际科技创新合作项目(No. 2021YFH0057)
详细信息
    作者简介:

    袁 野(1983—),女,四川成都人,2009 年于北京科技大学获理学硕士学位,在读博士研究生,主要从事等离子体物理的理论与技术的研究。E-mail:494050711@qq.com

    赵 青(1964—), 男,浙江义乌人,2001年于西南物理研究院获博士学位,主要从事高功率微波技术、等离子体波加热技术、低温等离子体和表面等离子体光学的理论、实验及应用、地下资源电磁勘探技术等领域的研究工作。E-mail:zhaoq@uestc.edu.cn

  • 中图分类号: O433.4

Spectral diagnosis of an arc jet actuator

Funds: Supported by the Key R & D project of sichuan provincial department of science and technology (No. 2021YFG0369), the sichuan international science and technology innovation cooperation project (No. 2021YFH0057)
More Information
  • 摘要:

    目前,电弧激励器仿真研究仅局限于得到激励器产生的等离子体的电势、压力、温度和速度等工作特性,而有关其的等离子体状态参数仅限于用光谱诊断其电子温度和电子密度等,二者是分立的,本文试图将其二者统一起来。为此,在此设计的电弧射流等离子体激励器,采用有限元法求解非线性多物理场方程,对此电弧射流等离子体激励器的工作特性进行了数值模拟,得到了激励器内部的电势、压力、温度和速度分布,并在此基础上对电子密度进行了计算,得到了由激励器工况得到激励器等离子体状态参数(电子温度和电子密度)的仿真计算模型。然后采用发射光谱诊断的方法对射流等离子体进行了光谱诊断,利用分立谱线的强度比例法对等离子体电子密度进行了计算。结果表明:电弧等离子体激励器诊断实验得到最高电子温度为10505.8 K,最大电子密度为5.75 E+22 m−3。对于不同工况下的等离子体电子温度和等离子体密度,实验和仿真结果数值均随入口气体流量增大及放电电流的增大而增大。表明对于我们设计的小型化、高射流速度的电弧射流激励器等离子体状态参数的仿真计算模型是合理且适用的。同时说明将激励器工作特性仿真与光谱诊断的电子温度、密度统一考虑是基本成功的,当然还有值得进一步改进的地方。

     

  • 图 1  电弧射流等离子体激励器结构图。(a)立体图;(b)截面

    Figure 1.  Structure diagram of arc jet plasma actuator. (a) Stereogram; (b) Cross section

    图 2  电流60 A、气体入口速度0.5 m/s时的工作特性分布图。(a)电势; (b)压力;(c)温度;(d)速度

    Figure 2.  Plasma characteristic distribution at current 60 A and gas inlet velocity 0.5 m/s. (a) Potential; (b) Pressure; (c) Temperature; (d) Speed

    图 3  电弧射流等离子体激励器实验拍摄图。(a)电弧射流等离子体激励器;(b)等离子体射流

    Figure 3.  experimental shooting of arc jet plasma actuator. (a) Arc jet plasma actuator; (b) Plasma jet

    图 4  光谱仪定标示意图及六条较强谱线

    Figure 4.  spectrometer calibration diagram and six strong spectral lines

    图 5  工况3时实验测得的光谱图

    Figure 5.  spectrum measured by experiment under working condition 3

    图 6  不同入口气体流量下的实验和仿真结果对照图。(a)电子温度;(b)电子密度

    Figure 6.  comparison diagram of experimental and simulation results under different inlet gas flows. (a) Electron temperature; (b) Electron density

    图 7  不同放电电流下的实验和仿真结果对照图。(a)电子温度;(b)电子密度

    Figure 7.  comparison diagram of experimental and simulation results under different discharge currents. (a) Electron temperature; (b) Electron density

    表  1  不同工况下得到的实验和仿真结果

    Table  1.   Experimental and simulation results under different working conditions

    Condition NumberPreset current/ADischarge Current/ADischarge Voltage/VRate of Flow/L/minTe from experiment/Kne from experiment/m−3Te from experiment/Kne from experiment/m−3
    18058324010505.85.75 E+22117432.45 E+22
    28052.8313010184.62.53 E+22112581.75 E+22
    38050.432209943.61.31 E+22106561.11 E+22
    48049.7272010451.84.87 E+22106231.08 E+22
    57548.9282010226.02.77 E+22105821.04 E+22
    67047.928209925.71.27 E+22105309.96 E+21
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