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Calculation of noise barrier performance in a turbulent atmosphere by using substitute sources above the barrier

Jens Forssén (Institutionen för teknisk akustik)
Acustica (0001-7884). Vol. 86 (2000), 2, p. 269-275.
[Artikel, refereegranskad vetenskaplig]

The paper presents a model that can be used for calculating the sound reduction by a noise barrier in a turbulent atmosphere. The field due to the acoustic source is substituted by a distribution of sources above the barrier (here called substitute sources). The mean power at the receiver is calculated as line-of-sight propagation through a turbulent atmosphere from all substitute sources using a mutual coherence function. In this study the strengths of the substitute sources are calculated using the Kirchhoff approximation. The calculated results show good averall agreement with those from using a parabolic equation method (PE).

Denna post skapades 2006-11-10. Senast ändrad 2014-12-12.
CPL Pubid: 23201


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Institutionen för teknisk akustik (1992-2004)



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