Analysis of radiation characteristics based on engine parameters

In engineering applications, it is essential to conduct sensitivity analysis on the integrated intensity within specific bands of interest. The results show that in four bands(2.8~3.0 μm, 3~5 μm, 2.5~3.0 μm, and 4.35~4.65 μm), the primary Sobol indices of the engine nozzle velocity significantly exceed those of the other three parameters, all approaching 50%. The nozzle pressure ranks second, with primary Sobol indices ranging between 39% and 45% across the four bands. And the coupling effects' Sobol indices account for approximately 10% in these bands.