电弧射流激励器光谱诊断研究 -

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电弧射流激励器光谱诊断研究

doi:10.37188/CO.2022-0097

袁野^1,,
田雷超²,
郭成¹,
赵青^1,,

1.
电子科技大学资源与环境学院，四川成都 610054
2.
上海空间推进研究所上海空间发动机工程技术研究中心，上海 201112

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）；电子科技大学中央高校基本科研业务费（No. ZYGX2020J014）

详细信息

作者简介:
袁　野（1983—），女，四川成都人，博士研究生，2009 年于北京科技大学获得理学硕士学位，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得博士学位，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
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出版历程
- 收稿日期:2022-05-13
- 录用日期:2022-08-24
- 修回日期:2022-05-30
- 网络出版日期:2022-08-24

Spectral diagnosis of an arc jet actuator

1.
School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 610054, China
2.
Shanghai Engineering Research Center of Space Engine, Shanghai Institute of Space Propulsion, Shanghai 201112, China

Funds:Supported by the Key R & D Project of Department of Science and Technology of Sichuan Province (No. 2021YFG0369); International Cooperation Project of Science and Technology Innovation of Sichuan Province (No. 2021YFH0057); the Fundamental Research Funds for the Central Universities of UESTC (No. ZYGX2020J014)

More Information

Corresponding author:zhaoq@uestc.edu.cn

摘要

摘要:
目前，电弧激励器的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，而其有关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。本文设计了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，并在此基础上计算了电子密度，由激励器工况得到了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计算。结果表明：电弧等离子体激励器诊断实验得到的最高电子温度为10505.8 K，最大电子密度为5.75×10²²m⁻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。表明对于所设计的小型化、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。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，同时还有值得进一步改进的地方。
- 发射光谱/
- 光谱学/
- 电子密度/
- 电弧激励器
Abstract:
At present, the simulation research of arc actuators is limited to only obtaining the working characteristics of the plasma generated by the actuator, such as potential, pressure, temperature and velocity, while the plasma state is limited to only diagnosing its electron temperature and electron density by spectrum. The two are separated. This paper attempts to unify the two. Therefore, the arc jet plasma actuator designed here adopts the finite element method to solve the nonlinear multi physical equations. The working characteristics of the arc jet plasma actuator are numerically simulated, and the potential, pressure, temperature and velocity distributions inside the actuator are obtained. On this basis, the electron density is calculated and the simulation calculation model of the plasma state (electron temperature and electron density) of the actuator is obtained from the working condition of the actuator. Then the spectral diagnosis of the jet plasma is carried out by using the emission spectral diagnosis method, and the electron density of plasma is calculated by using the intensity ratio method of discrete spectral lines. The diagnostic experiment of the arc plasma actuator shows that the maximum electron temperature is 10505.8 K and the maximum electron density is 5.75×10²²m⁻³. For the plasma electron temperature and plasma density under different working conditions, the experimental and simulation results increase with the increase of inlet gas flow and discharge current. It shows that our simulation model of plasma state is reasonable and applicable for our miniaturized arc jet actuator with high jet velocity.
- emission spectrum/
- spectroscopy/
- electron density/
- arc actuator

HTML全文

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 image

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图 2电流为60 A、气体入口速度为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 distributions at current of 60 A and gas inlet velocity of 0.5 m/s. (a) Potential; (b) pressure; (c) temperature; (d) speed

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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 photographs of arc jet plasma actuator. (a) Arc jet plasma actuator; (b) plasma jet

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图 4光谱仪定标示意图及6条较强谱线

Figure 4.Spectrometer calibration diagram and six strong spectral lines

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图 5工况3时实验测得的光谱图

Figure 5.Spectrum measured by experiment under working condition 3

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图 6（a）电子温度和（b）电子密度随不同入口气体流量变化的实验和仿真结果图

Figure 6.Comparison diagrams of experimental and simulation results of (a) electron temperature and (b) electron density under different inlet gas flows

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图 7（a）电子温度和（b）电子密度随不同放电电流变化的实验和仿真结果图

Figure 7.Comparison diagrams of experimental and simulation results of (a) electron temperature and (b) electron density under different discharge currents

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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 Number	Preset current/A	Discharge Current/A	Discharge Voltage/V	Rate of Flow/(L·min⁻¹)	T_efrom experiment/K	n_efrom experiment/m⁻³	T_efrom Simulation/K	n_efrom Simulation/m⁻³
1	80	58	32	40	10505.8	5.75×10²²	11743	2.45×10²²
2	80	52.8	31	30	10184.6	2.53×10²²	11258	1.75×10²²
3	80	50.4	32	20	9943.6	1.31×10²²	10656	1.11×10²²
4	80	49.7	27	20	10451.8	4.87×10²²	10623	1.08×10²²
5	75	48.9	28	20	10226.0	2.77×10²²	10582	1.04×10²²
6	70	47.9	28	20	9925.7	1.27×10²²	10530	9.96×10²¹

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