Abstract
A method of noise reduction proposed for the next generation of aircraft is to shield noise from the propulsion system, by positioning the noise source over a wing or another surface. In this
paper, an approximate analysis is developed for the acoustic field
far from a circular source placed near the edge of a semi-infinite
plate, a model problem for shielding of noise by a wing and for
scattering by a trailing edge. The approximation is developed for a
source of small radius and is found to be accurate when compared to full numerical evaluation of the field.
paper, an approximate analysis is developed for the acoustic field
far from a circular source placed near the edge of a semi-infinite
plate, a model problem for shielding of noise by a wing and for
scattering by a trailing edge. The approximation is developed for a
source of small radius and is found to be accurate when compared to full numerical evaluation of the field.
| Original language | English |
|---|---|
| Article number | 27 |
| Pages (from-to) | 14-27 |
| Number of pages | 14 |
| Journal | Acta Acustica United with Acustica |
| Volume | 6 |
| Early online date | 4 Jul 2022 |
| DOIs | |
| Publication status | Published - 31 Dec 2022 |
Keywords
- Noise shielding
- Rotor noise
- Scattering
- Trailing edge
ASJC Scopus subject areas
- Acoustics and Ultrasonics
- Computer Science Applications
- Speech and Hearing
- Electrical and Electronic Engineering