Upgrading a Shrouded Wind Turbine with a Self-Adaptive Flanged Diffuser

Energies

Jun-Feng Hu¹  Wen-Xue Wang² 

[1] Department of Aeronautics and Astronautics, Engineering School, Kyushu University, Motooka, Nishi-ku, Fukuoka 819-0395, Japan; E-Mail:;Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan

关键词: wind turbine;    self-adaptive flange;    diffuser;    drag reduction;    fluid-structure interaction;   

DOI  :  10.3390/en8065319

来源: mdpi

【 摘 要 】

In this paper, a self-adaptive flange is proposed for the wind turbine shrouded by a flanged diffuser to reduce the wind loads acting on the flanged diffuser at high wind velocities. The self-adaptive flange can maintain the advantages of the flanged diffuser at wind velocities lower than the rated velocity and reduce the wind loads acting on the diffuser and blades at higher wind velocities. Numerical analyses of fluid-structure interactions are carried out to investigate the flow field around the diffuser with a self-adaptive flange and the variation of wind load acting on the diffuser due to the reconfiguration of the self-adaptive flange at various wind velocities. Numerical results show that the wind load acting on the total flanged diffuser can be reduced by about 35% at 60 m/s due to the reconfiguration of the self-adaptive flange.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.