| Summary: | 碩士 === 國立臺灣大學 === 工程科學及海洋工程學研究所 === 99 === Since the rise of green energy, the industry of wind energy has been developed relatively. And now the wind turbine capacity also expanded, but when we pursuit of high-capacity, we often face that the real produce of the efficiency of wind turbines didn’t reach the design of target values.
In this article a 2kW rate power wind turbines blade has been use to simulate the blade’s efficiency. Firstly, built up its model by using a three-coordinate infrared ray’s measuring machine scanner to scan the blade’s geometry and then analyze the blade by computational fluid dynamics. Two commercial simulation software has been used to solve the dynamic fluid problem. Preprocessor – Gambit to set boundary and flow field, and then using the solver of Fluent to estimate the blade’s relevant parameters. In the simulation, several pitch angles has been investigate besides the original angle of the blade. The alteration of pitch angel will produce different torque; therefore, the blade’s efficiency has been change.
Due to the magnitude of the pressure side and the suction side of the blade vary with the pitch angle by transferring the pressure data and boundary conditions in fluent to Ansys workbench 12.0 to investigate the blade structural stress.
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