一种基于拉曼显微镜的现场燃烧碳沉积物诊断仪器
Zhen-Yu Tian1,2,3, Kai-Ru Jin1,2, Jiu-Jie Kuang1
1Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China.
The Review of scientific instruments
|October 22, 2024
概括
一个现场诊断仪器分析了航空发动机燃烧器中的碳沉积物形成. 该工具揭示了火焰速度如何在真实燃烧条件下影响碳结构和石墨化.
科学领域:
- 燃烧科学是一种科学.
- 材料科学是一种材料科学.
- 航空发动机技术技术的发展.
背景情况:
- 航空发动机燃烧器中碳沉积物的形成导致性能降低和安全风险.
- 了解碳沉积结构的动态变化对于发动机设计和维护至关重要.
研究的目的:
- 开发和评估一台用于分析燃烧过程中碳沉积物的晶体结构的现场诊断仪器.
- 研究不同条件下的乙烯/空气扩散喷气火焰中碳沉积物的形成和石墨化.
主要方法:
- 现场微观拉曼光谱与专门设计的燃烧系统的整合.
- 使用侧视观测设置在一个带有斜顶的燃烧器上,用于从点火开始的连续监测.
- 适用于拉曼光谱的五带模型,以导出时间解析的参数,如晶体大小和石墨化程度.
主要成果:
- 开发的仪器成功地在现场捕获了碳沉积物的拉曼光谱,其信号噪声比在6.4到28.9之间.
- 碳沉积物形成和石墨化趋势随着乙烯火焰的速度而变化,受温度和流动动力学的影响.
- 时间解析分析提供了关于碳沉积特征的动态演变的见解.
结论:
- 在现场开发的仪器为分析燃烧器碳沉积物的动态变化提供了一种新的方法.
- 火焰速度显著影响碳沉积物的特征,突出了进一步机械研究的必要性.
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