Akademik Veri Yönetim Sistemi
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2026, Florida, Amerika Birleşik Devletleri, 12 - 16 Ocak 2026, (Tam Metin Bildiri)
During rocket ignition and liftoff, strong transient pressure waves propagate within the launch pad environment and impinge on the launch vehicle, flame deflector and surrounding structures. Controlling pressure waves plays a vital role for safe lift-off of a launch system. Two kinds of pressure waves are generated during the ignition: 1-Ignition overpressure (IOP) 2Acoustic waves. In the present study IOP is investigated. IOP is a transient pressure wave which occurs as a sudden burst of exhaust gases and behaves similarly to a shock wave. IOP waves have high pressure amplitude and lower frequencies. The present study investigates IOP for a two-dimensional supersonic impinging jet case. Three different open-source Computational Fluid Dynamics (CFD) solvers are utilized to investigate the behavior of pressure waves and to establish a reliable basis for accurately predicting key aspects of the launch environment. For this purpose SU2, OpenFOAM (sonicFoam solver) and CFL3D solvers are selected. Different inner iterations are used to evaluate its effect on accuracy. A mesh independence study is conducted to ensure accurate capture of pressure-wave propagation. Inviscid and viscous solvers are compared in terms of both performance and solutions. Results show that all solvers can predict IOP accurately but differences are observed in the unresolved shear layer part.