Traffic is a major source of environmental noise in modern day’s society. As a result, the development of new vehicles are subject to heavy governmental legislations. The major noise sources on common road vehicles are engine noise, transmission noise, tire noise and, at high speeds, wind noise. One way to reduce intake and exhaust noise is to attach mufflers to the exhaust pipes. However, to d...

A review of recent advances in the use of surface integral methods in Computational AeroAcoustics (CAA) for the extension of near-field CFD results to the acoustic far-field is given. These integral formulations (i.e. Kirchhoff’s method, permeable (porous) surface FfowcsWilliams Hawkings (FW-H) equation) allow the radiating sound to be evaluated based on quantities on an arbitrary control surfa...

Leading-edge (LE) serrations on owls’ outermost remiges play a crucial role in the silent flight of owls. While aeroacoustic characteristics LE have been widely studied using single feathers/airfoils, how they affect feather–feather (feather slots) interactions during remains unclear. Here, we present numerical analysis effects owl-inspired aeroacoustics tandem wing models. Large-eddy simulatio...

The effects of elastic cavity walls on noise generation at transonic speed are investigated for the generic M219 cavity. flow is simulated with Spalart–Allmaras (SA) improved delayed detached-eddy simulation (IDDES) turbulence model in combination a wall function. structural analysis software uses modal formulation. first 50 normal mode shapes included simulation, spanning frequencies 468–2280 ...