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Flow acoustic analysis at ciclope
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet.
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet.ORCID-id: 0000-0001-7898-8643
2010 (engelsk)Inngår i: 17th International Congress on Sound and Vibration 2010, ICSV 2010, 2010, s. 1068-1080Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The new wind tunnel at CICLoPE - Center for International Cooperation in Long Pipe Experiments (www.ciclope.unibo.it) is an important research facility for the study of high Reynolds number turbulent flows. However, measuring turbulent fluctuations require low acoustic noise levels in the measurement section. A flow acoustic analysis of the wind tunnel has been completed at the maximum flow velocity case of 69 m/s in the measurement section with the purpose of concluding the final design of the up- and downstream mufflers. The acoustic analysis of the wind tunnel was carried out using a power based method (VDI 3733) along the two airborne sound propagation directions. However, it was concluded that a pure power based analysis was not an adequate approach in the low frequency region since where system resonance effects can be expected. For the low frequency range the wind tunnel was modeled using a one-dimensional sound propagation software for complex duct networks (SIDLAB).

sted, utgiver, år, opplag, sider
2010. s. 1068-1080
Emneord [en]
Acoustic analysis, Airborne sound, Flow acoustics, High Reynolds number, Long pipe, Low frequency range, Low frequency regions, One-dimensional sound propagation, Research facilities, Resonance effect, Turbulent fluctuation, Acoustic wave propagation, International cooperation, Wind tunnels
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-148905Scopus ID: 2-s2.0-84871407757ISBN: 978-161782255-1 (tryckt)OAI: oai:DiVA.org:kth-148905DiVA, id: diva2:738052
Konferanse
17th International Congress on Sound and Vibration 2010, ICSV 2010, 18 July 2010 through 22 July 2010, Cairo, Egypt
Merknad

QC 20140815

Tilgjengelig fra: 2014-08-15 Laget: 2014-08-14 Sist oppdatert: 2014-08-15bibliografisk kontrollert

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