摘要
The plume of liquid rocket engine contains abundant spectrum information,which can be used to infer the operating and fault conditions of the engine. A high-accuracy numerical method has been established in this paper for the simulations of metal emission spectrum in the plume of liquid rocket engine. The method was based on the line-by-line(LBL)spectrum simulating scheme,and considered the effects of the medium optical thickness. Based on the method,the emission spectrums of iron,nickel,and potassium in the plume were simu⁃ lated when engine failures occurred. The results agreed well with those obtained by the NASA plume simulation code. Besides,experimental verifications of emission spectra of iron and potassium were performed on CH4/O2 and C2H4/O2 flames. Results show that the differences of spectrum area and characteristic spectrum peak intensity between simulated and experimental data were below to 2.5%. Last,the capability and limit of optical thin and thick models were evaluated.
投稿的翻译标题 | Numerical and experimental investigations of metal emission spectrum in liquid rocket engine plume |
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源语言 | 繁体中文 |
文章编号 | 2212030 |
期刊 | Tuijin Jishu/Journal of Propulsion Technology |
卷 | 45 |
期 | 2 |
DOI | |
出版状态 | 已出版 - 2月 2024 |
关键词
- Atomic emission spectra
- Line-by-line
- Liquid rocket engine
- Numerical simulation
- Optical thickness