Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52854#.VKs-ecnQrzE Author(s) Soichi Sasaki , Ryo Sakada , Kota Suzuki Affiliation(s) Graduate School of Engineering, Nagasaki University, Nagasaki, Japan . ABSTRACT To discuss the relationship between the periodicity noise and the aerodynamic noise source of a wind turbine, the characteristics of the actual wind turbine were measured by a wind tunnel; moreover, 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 reached maximum at tip speed ratio 8. When the mainstream veloci...
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