File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: A study for sound wave scattering by corrugated ground with complex trench structures

TitleA study for sound wave scattering by corrugated ground with complex trench structures
Authors
Issue Date2009
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/17455030.asp
Citation
Waves In Random And Complex Media, 2009, v. 19 n. 3, p. 392-408 How to Cite?
AbstractSeveral trench structures in corrugated ground are investigated for the possibility of mitigating gun blast noise by numerical simulations. The blast noise usually includes large explosive energy with nonlinearity in the near field and exhibits a very low-frequency spectrum. In this study, the linearity approximation for the noise is taken because the nonlinearity of the wave reaching the scatterer is not serious for many proved guns and the low-frequency characteristic is concentrated. The structures are designed based on the surface impedance design approach proposed in our previous work and arbitrary three-dimensional (3D) geometries within a truncated ground are now assumed. The acoustic characteristic of the structures is evaluated by using a fast numerical solver. The solver employs the multilevel fast multipole algorithm (MLFMA) as an accelerator and can solve very large acoustic wave scattering problems with millions of unknowns on workstations within several days. This tool allows us to truncate the ground as large as needed for accurate modeling. Four structures are mainly considered in the design, namely, concentric trenches, sectorial trapezoidal trenches, interlaced arc trenches and parabolic reflectors. Some of them may have a sloped inner wall or tilted surface as a means of adjustment. Numerical simulations show that the concentric trench design has a very good mitigation behavior for linear and continuous noise sources and the structure is further studied for mitigating real-world gun blast noise.
Persistent Identifierhttp://hdl.handle.net/10722/182766
ISSN
2015 Impact Factor: 1.061
2015 SCImago Journal Rankings: 0.578
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTong, MSen_US
dc.contributor.authorTing, LYen_US
dc.contributor.authorChew, WCen_US
dc.contributor.authorWhite, MJen_US
dc.date.accessioned2013-05-02T05:16:46Z-
dc.date.available2013-05-02T05:16:46Z-
dc.date.issued2009en_US
dc.identifier.citationWaves In Random And Complex Media, 2009, v. 19 n. 3, p. 392-408en_US
dc.identifier.issn1745-5030en_US
dc.identifier.urihttp://hdl.handle.net/10722/182766-
dc.description.abstractSeveral trench structures in corrugated ground are investigated for the possibility of mitigating gun blast noise by numerical simulations. The blast noise usually includes large explosive energy with nonlinearity in the near field and exhibits a very low-frequency spectrum. In this study, the linearity approximation for the noise is taken because the nonlinearity of the wave reaching the scatterer is not serious for many proved guns and the low-frequency characteristic is concentrated. The structures are designed based on the surface impedance design approach proposed in our previous work and arbitrary three-dimensional (3D) geometries within a truncated ground are now assumed. The acoustic characteristic of the structures is evaluated by using a fast numerical solver. The solver employs the multilevel fast multipole algorithm (MLFMA) as an accelerator and can solve very large acoustic wave scattering problems with millions of unknowns on workstations within several days. This tool allows us to truncate the ground as large as needed for accurate modeling. Four structures are mainly considered in the design, namely, concentric trenches, sectorial trapezoidal trenches, interlaced arc trenches and parabolic reflectors. Some of them may have a sloped inner wall or tilted surface as a means of adjustment. Numerical simulations show that the concentric trench design has a very good mitigation behavior for linear and continuous noise sources and the structure is further studied for mitigating real-world gun blast noise.en_US
dc.languageengen_US
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/17455030.aspen_US
dc.relation.ispartofWaves in Random and Complex Mediaen_US
dc.titleA study for sound wave scattering by corrugated ground with complex trench structuresen_US
dc.typeArticleen_US
dc.identifier.emailChew, WC: wcchew@hku.hken_US
dc.identifier.authorityChew, WC=rp00656en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1080/17455030902725630en_US
dc.identifier.scopuseid_2-s2.0-70749098269en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70749098269&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume19en_US
dc.identifier.issue3en_US
dc.identifier.spage392en_US
dc.identifier.epage408en_US
dc.identifier.isiWOS:000274750800002-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridTong, MS=11839685700en_US
dc.identifier.scopusauthoridTing, LY=35220887800en_US
dc.identifier.scopusauthoridChew, WC=36014436300en_US
dc.identifier.scopusauthoridWhite, MJ=55472872700en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats