Temperature and H2O concentration measurements for a hybrid rocket motor plume using a single mid-infrared tunable diode laser
文献类型：会议论文
| 作者 | Fang SH(方思晗); Wang ZZ(王泽众) ; Li RJ(李仁杰); Zhang ZL(张泽林); Lin X(林鑫); Li F(李飞); Yu XL(余西龙); Yu XL(余西龙); Li F(李飞); Lin X(林鑫)
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| 出版日期 | 2020 |
| 会议日期 | 25 August 2020 through 27 August 2020 |
| 关键词 | concentration hybrid rocket motor nozzle exit temperature Tunable diode laser absorption spectroscopy (TDLAS) water vapor |
| 英文摘要 | A mid-infrared TDLAS sensor near 2.5m was designed for time-resolved measurements of temperature and water vapor partial pressure at the nozzle exit of a laboratory-scale hybrid rocket motor. Several previously used H2O transitions within 2.4-2.9m were thoroughly investigated, and a line-pair containing three transitions (4029.52 cm-1, 4030.51 cm-1 and 4030.73 cm-1) was selected for the optimal overall properties like strong absorbance, sufficient temperature sensitivity, single laser scan, high immunity from the ambient H2O transitions and low measurement uncertainty affected by temperature over the range of 1500K-2500K. Firing tests were conducted on an oxygen/paraffin-fueled hybrid rocket motor operating at oxygen/fuel ratios (O/Fs) of 3.10, 2.77 and 2.88, corresponding to average combustion pressures of 1.91MPa, 2.09MPa and 2.38MPa. A distributed feedback (DFB) laser tuned repetitively at 2kHz was used as the light source, and simultaneously the transmitted spectra were detected at a 2MHz sampling rate. Finally, a 4.5ms time-scale variations of temperature and H2O partial pressure were captured by TDLAS sensor. Uncertainty analysis was made in detail based on average temperature (1929.8K, 1926.5K, and 1990.7K) and average H2O partial pressure (0.237MPa, 0.253MPa, and 0.285MPa), leading to temperature uncertainty of around 2.24% and partial pressure uncertainties of around 3.80%, 3.79% and 4.04% respectively. The time-resolved measurement results and small measurement uncertaintiesindicate that TDLAS has the potential to evaluate the combustion performance of hybrid rocket motor © 2020 SPIE. |
| 资助机构 | This work was funded by the National Natural Science Foundation of China (No. 11802315 and No. 11927803) and Equipment Pre -research Foundation of National Defense Key Laboratory (No. 6142701190402). |
| 会议录 | Proceedings of SPIE - The International Society for Optical Engineering
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| 语种 | 英语 |
| URL标识 | 查看原文 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86659]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Fang SH,Wang ZZ,Li RJ,et al. Temperature and H2O concentration measurements for a hybrid rocket motor plume using a single mid-infrared tunable diode laser[C]. 见:. 25 August 2020 through 27 August 2020. |
入库方式： OAI收割
来源：力学研究所
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