Noise control for cooling fans on heavy vehicles
2012 (English)In: Noise Control Engineering Journal, ISSN 0736-2501, Vol. 60, no 6, 707-715 p.Article in journal (Refereed) Published
In this paper two different objects for fan passive noise control have been examined: heat exchangers and inlet/outlet parallel splitter silencers based on micro-perforated panels. The first object is theoretically and experimentally examined while the second is only examined experimentally. Throughout this paper two measurement methods were used. The ISO 15186-1:2000 to test the acoustic transmission for a diffuse field and plane wave testing in a duct of a sample cut from each heat exchanger type. Based on an anisotropic equivalent fluid model a theoretical model for the heat exchanger acoustic transmission is presented. A new type of splitter silencers based on micro-perforated plates, which can add damping up 10-20 dB in the frequency range of interest (<5 kHz), are also presented.
Place, publisher, year, edition, pages
2012. Vol. 60, no 6, 707-715 p.
Splitter Silencers, Sound-Attenuation, Porous Material, Ducts, Flow, Transmission
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-119980DOI: 10.3397/1.3701042ISI: 000316047400006ScopusID: 2-s2.0-84874618462OAI: oai:DiVA.org:kth-119980DiVA: diva2:613003
QC 201303262013-03-262013-03-262013-04-29Bibliographically approved