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NAOSITE : Nagasaki University's Academic Output SITE > 060 工学部・工学研究科 > 060 紀要 > 長崎大学工学部研究報告 > 第24巻 第43号 >

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

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タイトル: Prediction of Sound Pressure Level of Turbulent Noise Generated from Multiple-Disk Fans
著者: Kodama, Yoshio / Hayashi, Hidechito / Tanaka, Kiyohiro / Haraga, Hisato / Hamada, Yasuo / Akamatsu, Katushi
発行日: 1994年 7月
出版者: 長崎大学工学部 / Faculty of Engineering, Nagasaki University
引用: 長崎大学工学部研究報告, 24(43), pp.117-128; 1994
抄録: 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
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher
出現コレクション:第24巻 第43号

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



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