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Title: Aeroacoustics characterization methodology applicable to turbocharger compressor
Authors: Romagnoli, Alessandro
Rajoo, Srithar
Noor, Alias Mohd
Paramasivam, Kishokanna
Mohamed, Danial
Keywords: Turbocharger compressor noise
Centrifugal fan
Tonal noise
Issue Date: 2015
Source: Paramasivam, K., Mohamed, D., Romagnoli, A., Rajoo, S., & Noor, A. M. (2015). Aeroacoustics characterization methodology applicable to turbocharger compressor. ARPN Journal of Engineering and Applied Sciences, 10(17), 7773-7779.
Journal: ARPN Journal of Engineering and Applied Sciences
Series/Report no.: ARPN Journal of Engineering and Applied Sciences
Abstract: Turbochargers have become an important part of modern high efficient engines, and soon will be a standard component. Almost all automotive and industrial diesel engines and most of the high performance SI engines are equipped with turbocharger. Even though past few decades have seen continuous performance improvement, there is still lack of wide range research on acoustical behavior of turbochargers. A turbocharger consists of compressor which is driven by an exhaust turbine. Turbocharger produces high frequency aerodynamic sound due to the high speed rotating blade. The main aerodynamic noise generating mechanisms in turbo-compressors is tonal noise at blade passing frequencies, buzz-saw noise and blade tip clearance noise. The focus will be on tonal noise which occurs due to pressure fluctuation that is related to the rotating speed. The tonal noise is periodic in time where it consists of the blade passing frequency (BPF) and its harmonics. Higher rotating speed will result in a more prominent blade passing noise and its harmonics. The aim of this paper is to offer a methodology on characterizing the tonal noise of turbocharger based on investigation of a high speed turbomachinery, which also has similar acoustical behavior. This study will include results from commercial computational fluid dynamics (CFD) code and experimental with the sound pressure level distribution.
ISSN: 1819-6608
Research Centres: Energy Research Institute @ NTU (ERI@N) 
Rights: © 2015 Asian Research Publishing Network. This paper was published in ARPN Journal of Engineering and Applied Sciences and is made available as an electronic reprint (preprint) with permission of Asian Research Publishing Network. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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