Change search
ReferencesLink to record
Permanent link

Direct link
Whistling potential for duct components
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
2013 (English)In: SAE Technical Papers: Volume 4, 2013, S A E Inc , 2013, Vol. 4, 2013-01-1889- p.Conference paper (Refereed)
Abstract [en]

Components in ducts systems that create flow separation can for certain conditions and frequencies amplify incident sound waves. This vortex-sound phenomena is the origin for whistling, i.e., the production of tonal sound at frequencies close to the resonances of a duct system. One way of predicting whistling potential is to compute the acoustic power balance, i.e., the difference between incident and scattered sound power. This can readily be obtained if the scattering matrix is known for the object. For the low frequency plane wave case this implies knowledge of the two-port data, which can be obtained by numerical and experimental methods. In this paper the procedure to experimentally determine whistling potential will be presented and some examples are given to show how this procedure can be used in some applications for automotive intake and exhaust system components.

Place, publisher, year, edition, pages
S A E Inc , 2013. Vol. 4, 2013-01-1889- p.
, SAE Technical Papers, ISSN 0148-7191 ; Vol. 4, 2013
Keyword [en]
Acoustic power, Duct systems, Incident sound waves, Intake and exhaust systems, Numerical and experimental methods, Production of, Scattering matrices, Sound power, Acoustic noise, Exhibitions, Numerical methods, Orifices, Scattering parameters, Ducts
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-134159DOI: 10.4271/2013-01-1889ScopusID: 2-s2.0-84881214908OAI: diva2:665640
SAE 2013 Noise and Vibration Conference and Exhibition, NVC 2013; Grand Rapids, MI; United States; 20 May 2013 through 23 May 2013

QC 20131120

Available from: 2013-11-20 Created: 2013-11-18 Last updated: 2013-11-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Allam, SabryÅbom, Mats
By organisation
Marcus Wallenberg Laboratory MWL
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 33 hits
ReferencesLink to record
Permanent link

Direct link