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Aeroacoustic behaviour of a straight pipe
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
2005 (English)Conference paper (Refereed)
Abstract [en]

An experimental and theoretical investigation is carried out on the propagation (damping) and radiation of plane waves from an open ended pipe. This study seeks to analyse the acoustic response of tailpipes commonly found in an exhaust system. The silencer located upstream has to be designed in accordance with this response. The flow velocity was varied over a Mach number range of 0-0.2. Using an array of six induct flush mounted microphones associated with an iterative method, one can extract the rate of acoustical energy attenuation. The reflection coefficient and impedance at the opening are obtained in a similar fashion. The model of Munt is used to compute these quantities for confrontation with experimental data. A rotating microphone placed in the far field of a reverberant room is employed to measure the rate of attenuation through vorticity in the flow jet.

Place, publisher, year, edition, pages
2005. 2247-2254 p.
, 12th International Congress on Sound and Vibration 2005, ICSV 2005, Volume 3
National Category
Mechanical Engineering
URN: urn:nbn:se:kth:diva-148489ScopusID: 2-s2.0-84881571092ISBN: 978-162748149-6OAI: diva2:750515
12th International Congress on Sound and Vibration 2005, ICSV 2005; Lisbon; Portugal; 11 July 2005 through 14 July 2005

QC 20140929

Available from: 2014-09-29 Created: 2014-08-08 Last updated: 2014-09-29Bibliographically approved

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Ducret, Fabrice
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Marcus Wallenberg Laboratory MWL
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