Yi-jun NA, Ning LI, Xiao-long HUANG, Chun-sheng WENG. Research of Two-Dimensional Reconstruction of Combustion of Tunable Diode Laser Absorption Spectroscopy Based on Virtual Beam and Re-Projection Method[J]. Spectroscopy and Spectral Analysis, 2020, 40(12): 3686
- Spectroscopy and Spectral Analysis
- Vol. 40, Issue 12, 3686 (2020)
Fig. 1. Scheme of virtual beam method
Fig. 2. Reconstruction flowchart of the combustion field
Fig. 3. Bimodal original model
(a): Temperature distribution model; (b): Concentration distribution model
(a): Temperature distribution model; (b): Concentration distribution model
Fig. 4. Schematic diagram of beam arrangement
(a): Mode A; (b): Mode B; (c): Mode C; (d): Mode D
(a): Mode A; (b): Mode B; (c): Mode C; (d): Mode D
Fig. 5. Reconstruction error for different beam arrangements
Fig. 6. Variation trend of Reconstruction error
(a):Ex variation for reprojection number;(b): Et variation for reprojection number
(a):
Fig. 7. Reconstruction temperature field for different algorithms
(a): ART witi smoothing mechanism;(b): Virtual beam and re-projection method
(a): ART witi smoothing mechanism;(b): Virtual beam and re-projection method
Fig. 8. Reconstruction result for bimodal combustion field
(a): Reconstruction temperature field;(b): Reconstruction concentration field
(a): Reconstruction temperature field;(b): Reconstruction concentration field
Fig. 9. Variation trend of Reconstruction error with 0.5% noise
Fig. 10. Effect of random noise on reconstruction error
Fig. 11. Multimodal temperature distribution model
Fig. 12. Multimodal temperature reconstruction results
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