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A linearized Euler finite-difference time-domain sound propagation model with terrain-following coordinates
Heimann, Dietrich and Karle, Regina (2006) A linearized Euler finite-difference time-domain sound propagation model with terrain-following coordinates. Journal of the Acoustical Society of America, 119 (6), pp. 3813-3821. DOI: 10.1121/1.2200139.
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Official URL: http://scitation.aip.org/jasa/
Abstract
The equations of a linearized Euler finite-difference time-domain model for sound propagation through an inhomogeneous and moving atmosphere above absorbing ground are adapted to terrain-following coordinates. With the transformed numerical grid the effect of gentle orography is fully considered and the shortcomings of the representation of the orography by blocked-out grid cells in an untransformed grid are avoided. Comparisons with an analytical method to predict the interference patterns of a monochromic sound field above an idealized hill with rigid ground show good agreement. Further applications include absorbing ground and wind. A three-dimensional application also is discussed
| Document Type: | Article | ||||||
|---|---|---|---|---|---|---|---|
| Title: | A linearized Euler finite-difference time-domain sound propagation model with terrain-following coordinates | ||||||
| Authors: |
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| Date: | 2006 | ||||||
| Journal or Publication Title: | Journal of the Acoustical Society of America | ||||||
| Refereed publication: | Yes | ||||||
| In ISI Web of Science: | Yes | ||||||
| Volume: | 119 | ||||||
| DOI: | 10.1121/1.2200139 | ||||||
| Page Range: | pp. 3813-3821 | ||||||
| Status: | Published | ||||||
| Keywords: | Schallausbreitung, Modell, Koordinatentransformation, Orografie, sound propagation, model, coordinate transformation, orography | ||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||
| HGF - Program: | Transport | ||||||
| HGF - Program Themes: | V UR - Schonung von Umwelt und Ressourcen | ||||||
| DLR - Research area: | Transport | ||||||
| DLR - Program: | V UR - Schonung von Umwelt und Ressourcen | ||||||
| DLR - Research theme (Project): | V - Umweltwirkungen des Verkehrs (old) | ||||||
| Location: | Oberpfaffenhofen | ||||||
| Institutes and Institutions: | Institute of Atmospheric Physics > Atmospheric Dynamics | ||||||
| Deposited By: | Dr.rer.nat.hab. Dietrich Heimann | ||||||
| Deposited On: | 12 Sep 2007 | ||||||
| Last Modified: | 27 Apr 2009 12:56 |
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