Arc-heater as an Atomic Oxygen Generator
Arc-heater as an Atomic Oxygen Generator
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作为原子氧气发生器的电弧加热器
DOI：
10.2514/6.2003-3903
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发表时间：
2003
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;Satoshi Ogawa;Y. Oda;Ittoku Yamaji;K. Komurasaki;Y. Arakawa
用激光吸收光谱法测量了电弧加热器羽流中亚稳态氧原子的数密度分布。研究发现，氧在喷管出口处偏轴分布，在羽流中从外侧向中心线扩散，导致数密度较低。对电弧加热器羽流的数值模拟也表明了与实验相同的氧扩散过程。因此，为了提高氧的离解，改进了氧的注入口，使氧通过高温阴极射流区。
Number density distributions of metastable atomic oxygen in arcjet-type arc-heater plumes were obtained by laser absorption spectroscopy. The oxygen was found to be located off axis at the nozzle exit, and diffuses from outside toward centerline in the plume, resulting in the low number density. Numerical simulation calculated for the arc-heater plume also indicates the same diffusion process of the oxygen as the experimental one. Therefore, for the enhancement of the oxygen dissociation, the oxygen injection-port was improved so as that oxygen passes through a high temperature cathode-jet region.