Zhiru Xiao, Qinglin Niu, Zhenhua Wang, Shikui Dong. Quantitative analysis of the uncertainty of infrared radiation signature of rocket exhaust plume caused by incoming flow[J]. Infrared and Laser Engineering, 2023, 52(4): 20220621
- Infrared and Laser Engineering
- Vol. 52, Issue 4, 20220621 (2023)
Fig. 1. Computational domain and grids
Fig. 2. Comparison of infrared radiation intensity spectral of flare between calculation and reference results
Fig. 3. Contours of flow field parameters in baseline case
Fig. 4. Radiation intensity of Atlas-IIA plume at H =15 km
Fig. 5. Spectral radiation intensity uncertainty band and uncertainty
Fig. 6. Main Sobol index of free stream parameters to spectral intensity: (a) velocity, (b) pressure, (c) temperature, and (d) angle of attack
Fig. 7. Sobol index of coupling effect of free stream parameters to spectral intensity
Fig. 8. Sobol index of free stream parameters to in-band spectral intensity: (a) 3-5 μm band, (b) 2.5-3.2 μm band, (c) 2.8-3.0 μm band, and (d) 4.35-4.65 μm band
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Table 1. Parameters of free stream flow and nozzle exit [15]
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Table 2. Statistical properties of in-band radiance intensity
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