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Fan Noise Control Using Microperforated Splitter Silencers
Helwan University, Cairo, Egypt.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL. KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx).ORCID iD: 0000-0001-7898-8643
2014 (English)In: Journal of Vibration and Acoustics-Transactions of the ASME, ISSN 1048-9002, E-ISSN 1528-8927, Vol. 136, no 3, 031017- p.Article in journal (Refereed) Published
Abstract [en]

Splitter or baffle silencers are commonly used, for example, in heating ventilation and air conditioning (HVAC) systems and as inlet/outlet silencers on gas turbines. Another application is to reduce noise from the cooling fan inlet for large IC-engines. A splitter silencer can be seen as a periodic arrangement of parallel rectangular absorbers, which can be placed in a rectangular duct. The noise reduction afforded by parallel splitters depends not only on the physical properties of the lining but also upon the angle of incidence of the impinging sound waves, and the splitter and duct dimensions. In this paper, the potential of using splitters made of microperforated plates (MPPs) is investigated, with a particular focus on cooling fan inlet/outlet applications.

Place, publisher, year, edition, pages
2014. Vol. 136, no 3, 031017- p.
Keyword [en]
Sound-Attenuation, Porous Material, Ducts, Flow
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-148226DOI: 10.1115/1.4027245ISI: 000338204900017Scopus ID: 2-s2.0-84903783811OAI: oai:DiVA.org:kth-148226DiVA: diva2:736096
Funder
EU, European Research Council, SCP8-GA-2009-233541-ECOQUEST
Note

QC 20140805

Available from: 2014-08-05 Created: 2014-08-04 Last updated: 2017-12-05Bibliographically approved

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Åbom, Mats

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