High Order Sonic Boom Modeling by Adaptive Methods

Frédéric Alauzet (1) , Adrien Loseille (1)

1 GAMMA - Automatic mesh generation and adaptation methods

This report presents an accurate approach to simulate the sonic boom of a supersonic aircraft. The near-field flow is modeled by the conservative Euler equations and is solved using a vertex-centered finite volume approach on adapted unstructured tetrahedral meshes. Then, from the CFD solution, the pressure distribution under the aircraft is extracted and used to set up the initial conditions of the propagation algorithm in the far-field. The pressure distribution is propagated down to the ground in order to obtain the sonic boom signature using a ray tracing algorithm based upon the Thomas waveform parameter method. In this study, a sonic boom sensitivity analysis on several aircraft geometries is carried out.

Mots clés: Sonic boom; Euler equations; finite volume; anisotropic mesh adaptation; Waveform Parameter Method.; Waveform Parameter Method

Domaines: Analyse numérique [math.NA]

Frédéric Alauzet, Adrien Loseille. High Order Sonic Boom Modeling by Adaptive Methods. [Research Report] RR-6845, INRIA. 2009, pp.54. ⟨inria-00363206⟩