Smoothed particle hydrodynamic investigation of model vibrations in hypersonic flow

摘要

Sting vibrations in hypersonic wind tunnel data are investigated and modeled to show how pressure fluctuations are affected. This is in contrast with lower-speed flow where the sting's resonant frequencies are simply superimposed upon the data, leading to their simple removal, either with notch (band-stop) filtering or long-run averaging. The fundamental flow alteration at hypersonic velocities, as demonstrated in this paper, show post-processing noise removal is likely no longer trivial. This paper presents results for Mach 5 flow over 3D right circular cones and a capability to simulate these phenomena using the mesh-free Lagrangian Smoothed Particle Hydrodynamics (SPH) method. Published by Elsevier Ltd.