Radiation Analysis behind Reflected Air Shock Waves
Radiation Analysis behind Reflected Air Shock Waves
复制标题
反射空气冲击波背后的辐射分析
DOI：
10.11345/nctam.64.23
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
Atsushi KIMURA
中科院分区：
文献类型：
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作者：
Masato FUNATSU;Kenji SHIBUSAWA;Sota YAMAZAKI;Akira HARASAWA;Atsushi KIMURA
在我们的实验室，为了研究反射空气冲击波背后辐射的基本特性，系统地进行了激波管实验。通过高速摄像机观察冲击波背后的辐射。通过使用几种窄带通滤波器来检查冲击波背后的化学物质。此外，我们还尝试利用基本辐射理论对辐射光谱进行了分析，并将理论结果与实验结果进行了定性比较。结果，对于所有使用窄带通滤波器（例如原子氮和氧线）的情况，实验辐射强度随着入射激波马赫数的增加而增加。可见光和较长波长区域的理论辐射光谱具有数条氮原子和氧原子谱线。这些理论原子谱线比分子能带系统的光谱弱得多。实验结果与理论结果相比定性极高。
In our laboratory, in order to investigate the fundamental characteristics of radiation behind reflected air shock waves, shock tube experiments are performed systematically. The radiation behind the shock wave was observed by a high-speed video camera. The composed chemical species behind the shock waves were examined by using several kinds of narrow band-pass filters. Also, we analyzed the radiation spectra by using the fundamental radiation theory on a trial basis, and we compared qualitatively the theoretical results with the experimental ones. As the results, the experimental radiation intensity was increased with an increase in the incident shock Mach number for all the cases with the narrow band-pass filters such as atomic nitrogen and oxygen lines. The theoretical radiation spectra in the visible and the longer wavelength regions had several atomic nitrogen and oxygen lines. These theoretical atomic lines were much weaker than those spectra of the molecular band systems. The experimental results were extremely high compared qualitatively with the theoretical ones.