Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Jet pipe reflections - Influence of geometrical and flow exit conditions
Linnæus University, International Centre of Mathematical Modelling, School of Computer Science, Physics and Mathematics, Sweden. Gebze Institute of Technology, Department of Mathematics, Turkey.
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.ORCID-id: 0000-0003-4103-0129
Linnæus University, International Centre of Mathematical Modelling, School of Computer Science, Physics and Mathematics, Sweden. Gebze Institute of Technology, Department of Mathematics, Turkey.
Linnæus University, International Centre of Mathematical Modelling, School of Computer Science, Physics and Mathematics, Sweden.
2010 (Engelska)Ingår i: 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference), 2010, s. 2010-4013-Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

In this paper, we study the influence of the exit conditions on the acoustic reflections at a jet pipe opening. For the flow exit conditions, the model of Munt assuming a vortex sheet at the exit of a semi-infinite jet pipe is improved by considering more general coupling conditions. We focus on modelling the acoustic properties at the shear layer in general and the stability properties in particular. Experimental methods are used for studying primarily the geometric exit conditions. Both theoretical and experimental results are presented and discussed. Numerical results related to the theory show that the thickness of the shear layer causes an expected increase in the magnitude of the reflection coefficient compared to the original infinitely thin shear layer in the Munt model. The experimental results, on the other hand, show that there are additional effects due to the presence of thick walls at the exit of the straight pipes used in the experiments. These effects are observed to be more dominant than the effects due to the shape of the edges. Based on the discussions, further theoretical and experimental investigations are proposed.

Ort, förlag, år, upplaga, sidor
2010. s. 2010-4013-
Nyckelord [en]
Acoustic reflection, Experimental investigations, Experimental methods, General coupling, Numerical results, Reflection coefficients, Shear layer, Stability properties, Straight pipe, Thick-wall, Thin shear layers, Vortex sheet
Nationell ämneskategori
Farkostteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-149687Scopus ID: 2-s2.0-78649579501ISBN: 978-160086744-6 (tryckt)OAI: oai:DiVA.org:kth-149687DiVA, id: diva2:741762
Konferens
16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference), 7 June 2010 through 9 June 2010, Stockholm, Sweden
Anmärkning

QC 20140829 QC 20160929

Tillgänglig från: 2014-08-29 Skapad: 2014-08-26 Senast uppdaterad: 2016-09-29Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Scopus

Personposter BETA

Boij, Susann

Sök vidare i DiVA

Av författaren/redaktören
Boij, Susann
Av organisationen
MWL Marcus Wallenberg LaboratorietLinné Flow Center, FLOW
Farkostteknik

Sök vidare utanför DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetricpoäng

isbn
urn-nbn
Totalt: 64 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf