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A test rig and experimental procedure to determine the aeroacoustic properties of a splitter plate
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.
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
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet.
2009 (Engelska)Ingår i: 15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference), 2009, s. 2009-3258-Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

A test rig for a study of aero-acoustic phenomena over a sharp edge inside a duct is developed and described. The aero-acoustic losses over the edge are experimentally determined in quiescent air by measurements of a three-port, from which a power balance analysis yields the dissipated acoustic energy. The phenomenon of interest is interaction between the vortices shed by an acoustic wave propagating over a sharp edge and the wave itself. However, this phenomenon require high levels of particle velocity. The levels achieved are low, thus the dominating losses seen in the results are instead due to transfer of acoustic energy from sound waves into vibration energy in the splitter plate. This fact was observed by calculating the two-port scattering matrix over each sidebranch.

Ort, förlag, år, upplaga, sidor
2009. s. 2009-3258-
Nyckelord [en]
Acoustic energy, Acoustic loss, Experimental procedure, Particle velocities, Power balance, Scattering matrices, Sharp edges, Sound waves, Splitter plates, Test rigs, Vibration energies, Aeroacoustics, Acoustic wave propagation
Nationell ämneskategori
Farkostteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-152436Scopus ID: 2-s2.0-78149425310ISBN: 978-156347974-8 (tryckt)OAI: oai:DiVA.org:kth-152436DiVA, id: diva2:750375
Konferens
15th AIAA/CEAS Aeroacoustics Conference (30th AIAA Aeroacoustics Conference), 11 May 2009 through 13 May 2009, Miami, FL, United States
Anmärkning

QC 20140929

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

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Boij, Susann

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Holmberg, AndreasBoij, SusannKarlsson, Mikael
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MWL Marcus Wallenberg LaboratorietLinné Flow Center, FLOW
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