The insertion loss of screens under the influence of wind

Karsten Bo Rasmussen; Marta Galindo Arranz

doi:10.1121/1.423853

The insertion loss of screens under the influence of wind

Karsten Bo Rasmussen, Marta Galindo Arranz

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Abstract

Point source propagation over a screen located on a finite impedance surface representative of grass-covered ground is investigated under upwind and downwind conditions. The theoreticalpart of the investigation involves extended use of Parabolic Equation methods (PE) allowingfor the changes in the vertical wind speed profile when the wind field passes the screen. Theinfluence of turbulence is also implemented. The experimental part of the investigation relieson a scale model technique based upon a 1:25 scaling ratio and a triggered spark source. Themain results relate to the size of the insertion loss of a screen under windy conditions and tothe acoustic importance of the redirection of the flow before and after the screen.

Original language	English
Journal	Acoustical Society of America. Journal
Volume	104
Issue number	5
Pages (from-to)	2692-2698
ISSN	0001-4966
DOIs	https://doi.org/10.1121/1.423853
Publication status	Published - 1998

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Copyright (1998) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

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title = "The insertion loss of screens under the influence of wind",

abstract = "Point source propagation over a screen located on a finite impedance surface representative of grass-covered ground is investigated under upwind and downwind conditions. The theoreticalpart of the investigation involves extended use of Parabolic Equation methods (PE) allowingfor the changes in the vertical wind speed profile when the wind field passes the screen. Theinfluence of turbulence is also implemented. The experimental part of the investigation relieson a scale model technique based upon a 1:25 scaling ratio and a triggered spark source. Themain results relate to the size of the insertion loss of a screen under windy conditions and tothe acoustic importance of the redirection of the flow before and after the screen.",

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AU - Arranz, Marta Galindo

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PY - 1998

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N2 - Point source propagation over a screen located on a finite impedance surface representative of grass-covered ground is investigated under upwind and downwind conditions. The theoreticalpart of the investigation involves extended use of Parabolic Equation methods (PE) allowingfor the changes in the vertical wind speed profile when the wind field passes the screen. Theinfluence of turbulence is also implemented. The experimental part of the investigation relieson a scale model technique based upon a 1:25 scaling ratio and a triggered spark source. Themain results relate to the size of the insertion loss of a screen under windy conditions and tothe acoustic importance of the redirection of the flow before and after the screen.

AB - Point source propagation over a screen located on a finite impedance surface representative of grass-covered ground is investigated under upwind and downwind conditions. The theoreticalpart of the investigation involves extended use of Parabolic Equation methods (PE) allowingfor the changes in the vertical wind speed profile when the wind field passes the screen. Theinfluence of turbulence is also implemented. The experimental part of the investigation relieson a scale model technique based upon a 1:25 scaling ratio and a triggered spark source. Themain results relate to the size of the insertion loss of a screen under windy conditions and tothe acoustic importance of the redirection of the flow before and after the screen.

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The insertion loss of screens under the influence of wind

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