Experimental study of improved HAWT performance in simulated natural wind by an active controlled multi-fan wind tunnel |
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| Authors: | Kazuhiko Toshimitsu Takahiko Narihara Hironori Kikugawa Arata Akiyoshi Yuuya Kawazu |
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| Affiliation: | 1. Dept.of Information and Systems Engineering, Faculty of Information Engineering, Fukuoka Institute of Technology,3-30-1 Wajiro-higashi, Higashi-ku, Fukuoka 811-0295, Japan;2. Dept.of Energy and Environmental Engineering, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University;3. Dept.of Mechanical Engineering, Oita National College of Technology;4. IHI Corporation;5. Mechanical-Environmental System Engineering Major, Oita National College of Technology |
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| Abstract: | The effects of turbulent intensity and vortex scale of simulated natural wind on performance of a horizontal axis wind turbine (HAWT) are mainly investigated in this paper.In particular,the unsteadiness and turbulence of wind in Japan are stronger than ones in Europe and North America in general.Hence,Japanese engineers should take account of the velocity unsteadiness of natural wind at installed opden-air location to design a higher performance wind turbine.Using the originally designed five wind turbines on the basis of NACA and MEL blades,the dependencies of the wind frequency and vortex scale of the simulated natural wind are presented.As the results,the power coefficient of the newly designed MEL3-type rotor in the simulated natural wind is 130％ larger than one in steady wind. |
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| Keywords: | Wind Turbine Wind Energy Natural Wind Unsteady Flow Rotor Design Turbulence |
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