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

Magnus Åberg, Robert-Zoltán Szász, Laszlo Fuchs

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

Sammanfattning

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
Originalspråkengelska
Titel på gästpublikationCollection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference
FörlagAmerican Institute of Aeronautics and Astronautics
Sidor1960-1971
Volym3
ISBN (tryckt)1563478099
StatusPublished - 2006
Evenemang12th AIAA/CEAS Aeroacoustics Conference - Cambridge, MA, USA
Varaktighet: 2006 maj 82006 maj 10

Publikationsserier

Namn
Volym3

Konferens

Konferens12th AIAA/CEAS Aeroacoustics Conference
Land/TerritoriumUSA
OrtCambridge, MA
Period2006/05/082006/05/10

Ämnesklassifikation (UKÄ)

  • Strömningsmekanik och akustik

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