Optics and Precision Engineering, Volume. 32, Issue 9, 1307(2024)
Spatiotemporal distribution characteristics analysis of local flameout in jet flames based on 5 kHz planar laser-induced fluorescence
Figures & Tables(13)
Fig. 4. Binary images of different local adaptive threshold methods
Fig. 8. Correlation between flameout frequency and jet Mach number
Fig. 10. Spatial position of local flameout under different injection conditions
Table 1. Combustion conditions of main jet
View tableView in ArticleTable 1. Combustion conditions of main jet
工况 喷注压力P/105 Pa 马赫数 射流速度/（m·s-1） 1 1.2 0.5 172 2 1.8 1.0 313 3 2.6 1.3 407 4 3.4 1.5 470 5 4.2 1.6 501
Table 2. Confusion matrix of PLIF image segmentation
View tableView in ArticleTable 2. Confusion matrix of PLIF image segmentation
标签图 分割结果 火焰 背景 火焰 TP FN 背景 FP TN
Table 3. Comparison of image segmentation performance of adaptive threshold methods
View tableView in ArticleTable 3. Comparison of image segmentation performance of adaptive threshold methods
自适应阈值法 精确率 召回率 F1分数 均值 51.39 75.15 61.04 中值 38.13 85.92 52.82 高斯均值 71.92 94.57 81.70 竖直滑窗 90.81 95.92 93.30
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Long GAO, Jiangbo PENG, Xin YU, Chaobo YANG, Zhen CAO, Xun YUAN, Wenbei LIU. Spatiotemporal distribution characteristics analysis of local flameout in jet flames based on 5 kHz planar laser-induced fluorescence[J]. Optics and Precision Engineering, 2024, 32(9): 1307
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Received: Nov. 1, 2023
Accepted: --
Published Online: Jun. 2, 2024
The Author Email: PENG Jiangbo (pengjiangbo@hit.edu.cn)
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