Ignition Overpressure Analyses of Launch Pads at Different Deflector Angles

Creative Commons License

İriolya T. G., Eyi S.

12. International Conference on Computational Fluid Dynamics (ICCFD12), Kobe, Japan, 14 - 19 July 2024, no.6, pp.1-22

  • Publication Type: Conference Paper / Full Text
  • City: Kobe
  • Country: Japan
  • Page Numbers: pp.1-22
  • Open Archive Collection: AVESIS Open Access Collection
  • Middle East Technical University Affiliated: Yes

Abstract

The aim of this study is Computational Fluid Dynamics (CFD) analysis of ignition Over-Pressure (IOP) waves. During the ignition of launch vehicle rockets, unsteady pressure waves appear which is called IOP. These waves have high amplitude and low frequencies. IOP waves can have destructive effect on launch vehicle and launch pad. In order to have a safe launch, IOP should be analyzed and nozzle exhaust plume back flow toward launch vehicle should be prevented. In this study, OpenFOAM software is used for flow analyses. Density-based rhoCentralFoam and pressure-based sonicFoam solvers are utilized. The effects of deflector wall angles on IOP waves are investigated using both inviscid and viscous models.