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Flow acoustic analysis at ciclope
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: 0000-0001-7898-8643
2010 (English)In: 17th International Congress on Sound and Vibration 2010, ICSV 2010, 2010, 1068-1080 p.Conference paper, Published paper (Refereed)
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).

Place, publisher, year, edition, pages
2010. 1068-1080 p.
Keyword [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
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-148905Scopus ID: 2-s2.0-84871407757ISBN: 978-161782255-1 (print)OAI: oai:DiVA.org:kth-148905DiVA: diva2:738052
Conference
17th International Congress on Sound and Vibration 2010, ICSV 2010, 18 July 2010 through 22 July 2010, Cairo, Egypt
Note

QC 20140815

Available from: 2014-08-15 Created: 2014-08-14 Last updated: 2014-08-15Bibliographically approved

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Åbom, Mats

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  • apa
  • harvard1
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Output format
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