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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of Graduate School of Engineering, Nagasaki University > Volume 44, No. 83 >

小型プロペラ風車から発生する周期性騒音の空力音源に関する研究


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Title: 小型プロペラ風車から発生する周期性騒音の空力音源に関する研究
Other Titles: Study of Aerodynamic Noise Source of Periodical Noise Generated from a Micro Wind Turbine
Authors: 佐々木, 壮一 / 坂田, 涼
Authors (alternative): Sasaki, Soichi / Sakada, Ryo
Issue Date: Jul-2014
Publisher: 長崎大学大学院工学研究科 / Graduate School of Engineering, Nagasaki University
Citation: 長崎大学大学院工学研究科研究報告, 44(83), pp.1-6; 2014
Abstract: In this study, the relationship between the periodic noise and the aerodynamic noise source of a wind turbine is discussed. The aerodynamic characteristics and the noise of the actual wind turbine were measured by wind tunnel; the flow around the impeller immersed in the uniform flow was solved by numerical simulation. In the observed wind turbine, when the mainstream velocity was 7.4 m/s or more, the power coefficient became the maximum at the tip speed ratio 8. When the mainstream velocity became fast in the driving condition of the maximum power point, the aerodynamic noise became large due to the periodical noise in the vicinity of the 1000 Hz and the broadband noise in the high frequency domain. The noise sources were concentrated at the leading edge and the trailing edge on the suction surface side. We indicated that the pressure fluctuation of the leading edge was the noise source of the periodical noise.
Keywords: Aerodynamic Noise / Wind Turbine / Renewable Energy
URI: http://hdl.handle.net/10069/34563
ISSN: 18805574
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 44, No. 83

Citable URI : http://hdl.handle.net/10069/34563

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