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Simulation of the acoustics behind a wall due to a moving vehicle

Åberg, Magnus LU ; Szász, Robert-Zoltán LU and Fuchs, Laszlo LU (2006) 12th AIAA/CEAS Aeroacoustics Conference In Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference 3. p.1960-1971
Abstract
The influence of a barrier on the acoustic field is investigated using an expansion of the compressible Navier-Stokes equations. Large Eddy Simulations (LES) is used to account for the acoustical sources and the equation for the acoustic density fluctuation accounts for the propagation of the acoustics waves. This combined approach enhances numerical efficiency while maintaining good accuracy. The problem under consideration is related to the spreading of noise due to a moving vehicle and the effects of a noise barrier on the Sound Pressure Level (SPL) and spectral composition. These parameters are computed for several configurations of the barrier in terms of height and distance from the vehicle. The main results show that there can be... (More)
The influence of a barrier on the acoustic field is investigated using an expansion of the compressible Navier-Stokes equations. Large Eddy Simulations (LES) is used to account for the acoustical sources and the equation for the acoustic density fluctuation accounts for the propagation of the acoustics waves. This combined approach enhances numerical efficiency while maintaining good accuracy. The problem under consideration is related to the spreading of noise due to a moving vehicle and the effects of a noise barrier on the Sound Pressure Level (SPL) and spectral composition. These parameters are computed for several configurations of the barrier in terms of height and distance from the vehicle. The main results show that there can be acoustic modes in resonance between the barrier and vehicle and that barrier height has an effect on SPL that is intuitive. Copyright (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Sound Pressure Level (SPL), Large Eddy Simulations (LES), Acoustic density fluctuation, Noise barrier
in
Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference
volume
3
pages
1960 - 1971
publisher
American Institute of Aeronautics and Astronautics
conference name
12th AIAA/CEAS Aeroacoustics Conference
external identifiers
  • Scopus:33845632838
ISBN
1563478099
language
English
LU publication?
yes
id
e6c64320-7b1f-4b63-be91-d51a27ad3221 (old id 616899)
alternative location
http://www.aiaa.org/agenda.cfm?lumeetingid=1268&dateget=09-May-06#session6113
date added to LUP
2007-11-22 12:11:36
date last changed
2017-01-01 08:06:58
@inproceedings{e6c64320-7b1f-4b63-be91-d51a27ad3221,
  abstract     = {The influence of a barrier on the acoustic field is investigated using an expansion of the compressible Navier-Stokes equations. Large Eddy Simulations (LES) is used to account for the acoustical sources and the equation for the acoustic density fluctuation accounts for the propagation of the acoustics waves. This combined approach enhances numerical efficiency while maintaining good accuracy. The problem under consideration is related to the spreading of noise due to a moving vehicle and the effects of a noise barrier on the Sound Pressure Level (SPL) and spectral composition. These parameters are computed for several configurations of the barrier in terms of height and distance from the vehicle. The main results show that there can be acoustic modes in resonance between the barrier and vehicle and that barrier height has an effect on SPL that is intuitive. Copyright},
  author       = {Åberg, Magnus and Szász, Robert-Zoltán and Fuchs, Laszlo},
  booktitle    = {Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference},
  isbn         = {1563478099},
  keyword      = {Sound Pressure Level (SPL),Large Eddy Simulations (LES),Acoustic density fluctuation,Noise barrier},
  language     = {eng},
  pages        = {1960--1971},
  publisher    = {American Institute of Aeronautics and Astronautics},
  title        = {Simulation of the acoustics behind a wall due to a moving vehicle},
  volume       = {3},
  year         = {2006},
}