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Numerical investigation of the effect of crosswind on sound propagation outdoors

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Abstract
The effect of wind on sound propagation in the atmosphere has been studied extensively before with an emphasize on downwind sound propagation, typically representing worst-case scenarios. However, the influence of oblique and crosswind on propagation from various types of sources raises some questions in acoustic literature. In this work, the effect of a logarithmic wind speed profile at different wind directions has been studied for sound emitted by a point source, a coherent line source and an incoherent line source. For this purpose, a full three-dimensional wave-based method was used. For the incoherent line source simulation, the Harmonoise engineering approach based on a summation of source segments was considered as well and shows to be in satisfying agreement with the latter. While for a point source and coherent line source crosswind shows to have an insignificant effect, it is important in case of an incoherent line source. Also, the stretch of the incoherent line source contributing to the noise level at a receiver close to this line differs strongly depending on the wind direction.
Keywords
NOISE, MODEL, WIND

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Citation

Please use this url to cite or link to this publication:

Chicago
Homikx, Maarten, and Timothy Van Renterghem. 2016. “Numerical Investigation of the Effect of Crosswind on Sound Propagation Outdoors.” Acta Acustica United with Acustica 102 (3): 558–565.
APA
Homikx, M., & Van Renterghem, T. (2016). Numerical investigation of the effect of crosswind on sound propagation outdoors. ACTA ACUSTICA UNITED WITH ACUSTICA, 102(3), 558–565.
Vancouver
1.
Homikx M, Van Renterghem T. Numerical investigation of the effect of crosswind on sound propagation outdoors. ACTA ACUSTICA UNITED WITH ACUSTICA. STUTTGART: S HIRZEL VERLAG; 2016;102(3):558–65.
MLA
Homikx, Maarten, and Timothy Van Renterghem. “Numerical Investigation of the Effect of Crosswind on Sound Propagation Outdoors.” ACTA ACUSTICA UNITED WITH ACUSTICA 102.3 (2016): 558–565. Print.
@article{8153436,
  abstract     = {The effect of wind on sound propagation in the atmosphere has been studied extensively before with an emphasize on downwind sound propagation, typically representing worst-case scenarios. However, the influence of oblique and crosswind on propagation from various types of sources raises some questions in acoustic literature. In this work, the effect of a logarithmic wind speed profile at different wind directions has been studied for sound emitted by a point source, a coherent line source and an incoherent line source. For this purpose, a full three-dimensional wave-based method was used. For the incoherent line source simulation, the Harmonoise engineering approach based on a summation of source segments was considered as well and shows to be in satisfying agreement with the latter. While for a point source and coherent line source crosswind shows to have an insignificant effect, it is important in case of an incoherent line source. Also, the stretch of the incoherent line source contributing to the noise level at a receiver close to this line differs strongly depending on the wind direction.},
  author       = {Homikx, Maarten and Van Renterghem, Timothy},
  issn         = {1610-1928},
  journal      = {ACTA ACUSTICA UNITED WITH ACUSTICA},
  keyword      = {NOISE,MODEL,WIND},
  language     = {eng},
  number       = {3},
  pages        = {558--565},
  publisher    = {S HIRZEL VERLAG},
  title        = {Numerical investigation of the effect of crosswind on sound propagation outdoors},
  url          = {http://dx.doi.org/10.3813/AAA.918973},
  volume       = {102},
  year         = {2016},
}

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