Laser Absorption Spectroscopy in High Enthalpy Flows
Laser Absorption Spectroscopy in High Enthalpy Flows
复制标题
高焓流中的激光吸收光谱
DOI：
10.2514/6.2005-5325
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Y. Arakawa
中科院分区：
文献类型：
--
作者：
M. Matsui;K. Komurasaki;Y. Arakawa
激光吸收光谱学已经发展成为高焓流的诊断工具。首先从误差分析和吸收饱和的影响两个方面研究了该系统的适用范围。然后将该系统应用于两种等离子体风洞流场。结果，在电弧加热器羽流中，发现在收缩器处注入的氧气与喷嘴出口处的氩气基流没有充分混合。在羽流下游区域，氧气缓慢地向轴扩散，导致氧气的解离度非常小，为0.01%。在IPG 3羽流中，发现氧的平均解离度大于0.92。总焓估计为33.7±2.9 MJ/kg，其中43%为化学势。这些结果与侵入式测量结果吻合良好。
Laser Absorption Spectroscopy has been developed as a diagnostics tool for high enthalpy flow. Firstly an applicable limit of this system was investigated considering error analysis and an influence of absorption saturation. Then this system was applied to two kinds of plasma wind tunnels flows. As a result, in arc-heater plumes, oxygen injected at the constrictor was found not enough mixed with argon base flow at the nozzle exit. The oxygen slowly diffused toward the axis in the downstream region of the plume, resulting in the quite small degree of dissociation of oxygen at the level of 0.01%. In IPG3 plume, the averaged degree of dissociation of oxygen was found to be more than 0.92. The total enthalpy was estimated as 33.7±2.9 MJ/kg; 43% of it was possessed as the chemical potential. These results show good agreement with intrusive measurements.
激光吸收光谱和CFD分析电弧喷射式原子氧发生器性能
DOI：
--
发表时间：
2004
期刊：
Vacuum 73
影响因子：
--
作者：
Matsui;M.;Takayanagi;H.;Oda;Y.;Komurasaki;K.;Arakawa;Y.
通讯作者：
Y.