Analysis of Fluid-Structure Interaction of a 2D Blade for a Small Wind Turbine

• Main Authors: Jiean-Hua Lin, 林建華
• Other Authors: Cheng-Ying Lo
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/22jdpd

碩士 === 國立虎尾科技大學 === 航空與電子科技研究所 === 98 === Wind turbines have being attracted a lot of interest in engineering applications as the requirement for clear energy increases. Appropriate blade design has a significant effect on the efficiency of a wind turbine. To design an efficient wind turbine, it is necessary to understand the interaction between wind loads and blades. Many present studies focus on these two topics separately because highly dissimilar characteristics between them. The present study aims to investigate the coupling effect of wind loads and 2D blades for a small scale wind turbine. The present study applies the analysis software ANSYS and the computational fluid mechanics software CFX to conduct a two-way fluid structural analysis of a 2D blade. The effect of factors, include angle of attack, wind speed and Young modulus of blades, on the drag and lift are covered in the study. The information of displacement and force along the fluid structural interface are hand-shaked through stagger iteration between the fluid solver and the solid solver that individual calculation of field variables are carried out in the fluid solver and the solid solver until the displacement and force along the interface of fluid and structure are convergent. The analysis results show a blade with a flexible material under a high wind speed can reduce the drag coefficients by2.05 % and the lift coefficient by63.79%. This study provides a good insight for the design of blades for a small scale wind turbine.