The boundary element method (BEM) in the context of acoustics or Helmholtz problems is
reviewed in this paper. The basis of the BEM is initially developed for Laplace's equation …

Abstract The Council of European Aerospace Societies (CEAS) Aeroacoustics Specialists
Committee (ASC) supports and promotes the interests of the scientific and industrial …

Because of their potential to reduce aircraft emissions, counter-rotating open rotors (CRORs)
have seen a renewed interest in applications, from civil aviation to urban air mobility …

Acoustic emissions play a major role in the usability of many product categories. Therefore,
mitigating the emitted sound directly at the source is paramount to improve usability and …

ABSTRACT A code coupling has been established for performing efficient fan tone shielding
simulations of aerial vehicles with unconventional engine installations. In particular, the Fast …

This paper addresses the acoustic and aerodynamic characteristics of small rotor
configurations, including the influence of the rotor–rotor interactions. For this purpose, a …

Beamforming methods for sound source localization are usually based on free-field Green's
functions to model the sound propagation between source and microphones. This …

In the present work a dynamic simulation model for a quadcopter drone is developed and
validated through experimental flight data. The aerodynamics of the rotors is modeled with …

In this work, scattering and shielding of the tonal noise from contrarotating open rotors by
surrounding parts are investigated. The computational tool chain is based on unsteady …

This paper presents two novel integral formulations for the prediction of sound scattered by
moving bodies, derived from the Lighthill and the Ffowcs Williams and Hawkings equations …