Infrared and Laser Engineering, Volume. 53, Issue 7, 20240112(2024)
Evaluation and reconstruction of afterburning reaction kinetics of rocket exhaust plume
Figures & Tables(21)
Fig. 1. Comparison of flow structures between calculated and measured results
Fig. 2. Comparison of the spectral intensity between calculated and measured data
Fig. 5. Comparison of plume temperature for five chemical reaction models
Fig. 6. Comparison of reaction release heat for five chemical reaction models
Fig. 7. Comparison of temperatures on the centerline for different chemical reaction models
Fig. 8. Comparison of area cumulative temperature for different chemical reaction models
Fig. 9. Mole fraction contours of CO2 and H2O for five chemical reaction models
Fig. 10. Mole fraction of main species for five chemical reaction models
Fig. 11. Mole fraction of CO and H2 in the plume radial direction for the five chemical reaction models
Fig. 12. Comparison of spectral intensity for five chemical reaction models and measured data
Fig. 13. Comparison of IR images for five chemical reaction models
Fig. 14. Radiances within different bands for five chemical reaction models
Fig. 16. Error distribution of reaction rate between reference and measured data
Fig. 17. Comparison of spectral intensity calculated and experimental data
Table 1. Mole fraction of BEM-Ⅱ species on the exit plane
View tableView in ArticleTable 1. Mole fraction of BEM-Ⅱ species on the exit plane
Species Mole fraction CO 0.115 CO2 0.136 H2 0.056 H2O 0.4 N2 0.096 OH 0.056 HCl 0.141
Table 2. Difference of reaction kinetics for five CO/H2 systems
View tableView in ArticleTable 2. Difference of reaction kinetics for five CO/H2 systems
Reaction dynamics $ {\varepsilon }_{A} $ $ {\varepsilon }_{n} $ $ {\varepsilon }_{{E}_{a}} $ R1 58.9% 5.5% 33.1% R2 73.5% 0% 13.2% R3 100% 5.27% 3.88% R4 65.5% 4.99% 9.99% R5 81.5% 100% 21% R6 85.8% 36.1% 120% R7 29.8% 0% 0% R8 94.9% 20% 50% R9 53.2% 0% 0% R10 50.1% 25% 100%
Table 3. Proposed chemical reaction kinetics of the H2/CO system
View tableView in ArticleTable 3. Proposed chemical reaction kinetics of the H2/CO system
Reaction dynamics $k = A{T^n}\exp ( - E/RT)$ H*+O2↔OH*+O* 1.2×1014T-0.91exp(−8335/T) H2+O*↔OH*+H* 0.508×102T2.67exp(−3136/T) OH*+H2↔H2O+H* 1×105T1.6exp(−1661/T) H*+H*+M↔H2+M 6.53×1011T−1exp(0/T) CO+OH*↔CO2+H* 4.76×104T1.288exp(35.2/T) O*+O*+M↔O2+M 3.13×106exp(899/T) CO+O*+M↔CO2+M 6.62×108exp(2297/T) O*+H*+M↔OH*+M 1.23×107T−1exp(3140/T) H*+OH*+M↔H2O+M 2.21×1016T−2exp(0/T) OH*+OH*↔O+H2O 2.05×105T1.14exp(550/T)
Table 4. Error distribution of radiances within the representative three bands
View tableView in ArticleTable 4. Error distribution of radiances within the representative three bands
Band range/ μm Measurements/ W·sr-1 Calculated value/ W·sr-1 Calculation error 2.5-3.0 26.7 28.3 5.99% 4.2-4.6 84.1 82.5 1.93% 1.5-5.5 235 238 1.36%
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Jie MA, Xiaobing WANG, Hongli WANG, Qinglin NIU, Shikui DONG. Evaluation and reconstruction of afterburning reaction kinetics of rocket exhaust plume[J]. Infrared and Laser Engineering, 2024, 53(7): 20240112
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Received: Mar. 11, 2024
Accepted: --
Published Online: Aug. 9, 2024
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