单脉冲BOXCARS技术在瞬态燃烧场测温中的应用
Single pulse BOXCARS applied to measure temperature of transient combustion
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摘要: 用单脉冲交叉相干反斯托克斯喇曼散射技术测量了两种不同固体燃剂的瞬态燃烧场的温度。对燃烧场进行了优化,给出了在燃烧场中取得的部分典型单脉冲CARS光谱及其理论拟合结果,得到了燃烧场的温度及其随高度的分布;稳定燃烧时两种燃剂燃烧场的温度基本保持不变,平均值分别为2 260,2 090K;测量了实验的纵向空间分辨率。结果表明,BOXCARS技术能较好地完成复杂的瞬态燃烧场温度的测量工作。Abstract: The temperature distribution in two kinds of solid fuel combustion have been measured instantly by BOXCARS with single laser pulse. The combustions were optimized to solve flutter and bifurcate of flame. The data are acquired at high temporal and spatial resolution, the spatial resolution is about 1.2mm and the time resolution is about 8ns. The temperature is as high as 2 260K in SZFDB1 solid fuel combustion and 2 090K in SZFDB4 solid fuel combustion, The result indicates that temperature at the transient combustion field can be measured preferably by BOXCARS.
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Key words:
- boxcars /
- temperature /
- combustion /
- solid fuel /
- single pulse /
- spatial resolution
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