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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of the Faculty of Engineering, Nagasaki University > Volume 24, No. 43 >

Prediction of Sound Pressure Level of Turbulent Noise Generated from Multiple-Disk Fans

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Title: Prediction of Sound Pressure Level of Turbulent Noise Generated from Multiple-Disk Fans
Authors: Kodama, Yoshio / Hayashi, Hidechito / Tanaka, Kiyohiro / Haraga, Hisato / Hamada, Yasuo / Akamatsu, Katushi
Issue Date: Jul-1994
Publisher: 長崎大学工学部 / Faculty of Engineering, Nagasaki University
Citation: 長崎大学工学部研究報告, 24(43), pp.117-128; 1994
Abstract: We proposed a theory for estimating the spectral density distribution and over all sound pressure level of the turbulent noise radiated from multiple-disk fans. In the theory, correlations between the longitudinal and lateral correlation lengths, and the pressure spectral densities were used. The effects of casing on the radiated noise were experimentally made clear by comparing the spectral density distributions with and without casing. The validity of theoretically obtained formula was examined with respect to the effects of such parameters as; the gap between two disks, the rotational frequency, the number of disks, the thickness of disks, the radius of impeller and the flow rate. The agreement between the theoretical and the experimental results was fairly satisfactory.
URI: http://hdl.handle.net/10069/24440
ISSN: 02860902
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 24, No. 43

Citable URI : http://hdl.handle.net/10069/24440

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