Temperature Measurements of the Air Plasma Flow Using Optical Emission Spectroscopy
Temperature Measurements of the Air Plasma Flow Using Optical Emission Spectroscopy
复制标题
使用光学发射光谱法测量空气等离子流的温度
DOI：
10.2514/1.49305
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发表时间：
2011
影响因子：
2.1
通讯作者：
L. Zeni
中科院分区：
文献类型：
--
作者：
A. Cipullo;F. D. Filippis;L. Zeni
用光学发射光谱法测量了意大利航空航天研究中心Scirocco电弧加热发动机等离子体风洞产生的自由绕流的旋转温度。用于进行大气层再入模拟试验的气体混合物是空气，并且已经在220-310 nm波长范围内研究了从喷管出口段17 cm远处发射的光谱。的光学设置是基于1200-grooves= mmmonochroxide和1024 - 256电荷耦合器件相机，和光谱已被校准使用组合氘-卤素辐射源。通过将实验光谱与光谱模拟软件LIFBASE 2.0获得的光谱进行比较来确定转动温度。使用模式匹配算法。注意力主要集中在NO的排放带，并实现了在电弧加热发动机设施进行的六个测试活动的实验结果和数值预测之间的部分协议。最后，进行了误差分析，以评估的措施的误差带。
The rotational temperature of the freestream flow generated by the Scirocco arcjet plasma wind-tunnel facility of the Italian Aerospace Research Center (CIRA) is measured by means of optical emission spectroscopy. The gas mixture used to perform the atmospheric reentry simulation tests is air, and the optical spectrum emitted 17 cmaway from the exit section of the nozzle has been investigated over the 220–310 nm wavelength range. The optical setup is based on a 1200-grooves=mmmonochromator and a 1024 256 charge-coupled device camera, and the spectrum has been calibrated using a combined deuterium–halogen radiation source. The rotational temperature is determined by comparing the experimental spectra with those obtained by the spectral simulation software LIFBASE 2.0. A pattern-matching algorithm is used. Attention is mainly focused on the NO emission bands, and partial agreement between experimental results and numerical predictions is achieved for six test campaigns conducted in the arcjet facility. Finally, an error analysis has been performed to assess the error bands of the measures.