Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Sound propagation over inhomogeneous ground including a sound velocity profile
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0002-9031-3662
2006 (English)In: Mathematical Modeling of Wave Phenomena / [ed] Nilsson, B; Fishman, L, MELVILLE, NY: AMER INST PHYSICS , 2006, Vol. 834, 122-129 p.Conference paper, Published paper (Refereed)
Abstract [en]

The atmospheric profile whose sound speed varies linearly with height is simple in concept, but leads to complications when solving for the sound pressure. Its effects are commonly approximated by a similar profile whose squared refractive index is a linear function of height. In this paper, the validity of the approximation has been examined for sound propagation above an impedance ground and a computational approximation is given. The method relies upon a family of radiation boundary conditions for the wave equation derived by truncating a summation function approximation of a corresponding plane wave reflection coefficient representation. It is demonstrated bow these boundary conditions can be formulated in terms of a finite element approach. Numerical examples illustrate results with four coefficients included at the upper fictitious boundary conditions for the case of sound propagation above a grass-strip and sound propagation over the grass-strip with an atmospheric profile.

Place, publisher, year, edition, pages
MELVILLE, NY: AMER INST PHYSICS , 2006. Vol. 834, 122-129 p.
Series
AIP CONFERENCE PROCEEDINGS, ISSN 0094-243X ; 834
Keyword [en]
non-reflecting boundary conditions, sound propagation, finite elements
National Category
Physical Sciences Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-41954DOI: 10.1063/1.2205795ISI: 000237610000012Scopus ID: 2-s2.0-33845572249ISBN: 0-7354-0325-2 (print)OAI: oai:DiVA.org:kth-41954DiVA: diva2:445788
Conference
Conference: 2nd Conference on Mathematical Modeling of Wave Phenomena. Vaxjo, SWEDEN. AUG 14-19, 2005
Note

QC 20111005

Available from: 2011-10-05 Created: 2011-10-04 Last updated: 2016-05-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Finnveden, Svante

Search in DiVA

By author/editor
Peplow, Andrew T.Finnveden, Svante
By organisation
Marcus Wallenberg Laboratory MWL
Physical SciencesFluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 21 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf