03.1 - Aerodynamics – CFD Methods and Validation
INVESTIGATION OF PLUME NON-EQUILIBRIUM INFRARED RADIATION CHARACTERISTICS AT DIFFERENT MACH NUMBERS
J. Xu, China; L. Zhou, China; J. Shi, China; Z. Wang, China; H. Shi, China
The work investigates plume IR signatures at 80km across Ma 5-25 using an nonequilibrium flow-infrared simulation. Results show a "crescent+spike" morphology. As Ma increases, IR intensity follows a U-shaped trend, while nonequilibrium effects weaken. The plume shifts from expansion to compression-dominated. Higher Ma enhance core radiation and mixing, leading to trailing effects.
DOI: 10.71945/icas2026_0043