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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:
AuthorsInstitution or Email of Authors
Heimann, DietrichUNSPECIFIED
Karle, ReginaUNSPECIFIED
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 (old)
HGF - Program:Transport
HGF - Program Themes:V UR - Schonung von Umwelt und Ressourcen (old)
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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