Development of a high-performance wind turbine equipped with a brimmed diffuser shroud

被引：0
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作者：
Ohya, Yuji [1 ]
Karasudani, Takashi [1 ]
Sakurai, Akira [2 ]
Inoue, Masahiro [3 ]
机构：
[1] Research Institute for Applied Mechanics, Kyushu University, Kasuga, Japan
[2] Department of Aeronautics and Astronautics, Kyushu University, Fukuoka, Japan
[3] Sasebo National College of Technology, Sasebo, Japan
来源：
Transactions of the Japan Society for Aeronautical and Space Sciences | 2006年 / 49卷 / 163期
关键词：
We have developed a new wind turbine system that consists of a diffuser shroud with a broad-ring brim at the exit periphery and a wind turbine inside it. The brimmed-diffuser shroud plays the role of a device for collecting and accelerating the approaching wind. Emphasis is placed on positioning the brim at the exit of the diffuser shroud. Namely; the brim generates a very low-pressure region in the exit neighborhood of the diffuser by strong vortex formation and draws more mass flow to the wind turbine inside the diffuser shroud. To obtain a higher power output of the shrouded wind turbine; we have examined the optimal form for the brimmed diffuser; such as the diffuser open angle; brim height; hub ratio; centerbody length; inlet shroud shape and so on. As a result; a shrouded wind turbine equipped with a brimmed diffuser has been developed; and demonstrated power augmentation for a given turbine diameter and wind speed by a factor of about five compared to a standard (bare) wind turbine. © 2006 The Japan Society for Aeronautical and Space Sciences;
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页码：18 / 24
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