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Noise reduction for automotive radiator cooling fans
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet.ORCID-id: 0000-0001-7898-8643
2015 (engelsk)Inngår i: FAN 2015 - International Conference on Fan Noise, Technology and Numerical Methods, Institution of Mechanical Engineers , 2015Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Engine cooling fans have long been recognized as one of the major noise sources in a vehicle. As the engine and other vehicle components are made quieter, the need to reduce fan noise has become more and more urgent. To reduce fan noise in a cost-effective manner, it is necessary to incorporate the component of noise reduction into an early design stage. In this paper a detailed experimental study on an automotive vehicle cooling system is presented. The aim is to investigate the flow generated noise, characterize the heat exchanger damping properties and investigate the use of near-field noise control by micro-perforated (MPP) shrouds and tuned MPP dampers. For the tested standard automotive cooling fan system the MPP shroud gave a reduction in the range 1.5 to 4.5 dB(A) depending on the fan speed. Also the absorption on the back-side is significantly increased which can reduce the noise further. The near-field tuned MPP damper concept is also promising and gives a reduction around 3 dB(A) at the operating points. 

sted, utgiver, år, opplag, sider
Institution of Mechanical Engineers , 2015.
Emneord [en]
Automobile cooling systems, Cooling, Cost effectiveness, Damping, Noise abatement, Numerical methods, Radiators, Automotive radiators, Automotive vehicle, Cost effective, Damping property, Early design stages, Flow-generated noise, Operating points, Vehicle components, Automobile engines
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-236917Scopus ID: 2-s2.0-85048961490ISBN: 9780957237438 (tryckt)OAI: oai:DiVA.org:kth-236917DiVA, id: diva2:1269727
Konferanse
International Conference on Fan Noise, Technology and Numerical Methods, FAN 2015, 15 April 2015 through 17 April 2015
Merknad

Funding details: EU, Erzincan Üniversitesi; Funding text: Part of this research has been financed by EU commission Grant Agreement no: SCP8-GA-2009-233541-ECOQUEST [23]. Another part has been funded by the EU Community under the MC project FlowAirS. The fans used for the tests were supplied by Valeo and the support from Manuel Henner at this company was very useful. Finally the micro-perforate plates (ACUSTIMET®) used in the tests were standard plates supplied by the company Sontech and Ralf Corin.

QC 20181211

Tilgjengelig fra: 2018-12-11 Laget: 2018-12-11 Sist oppdatert: 2018-12-11bibliografisk kontrollert

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