Numerical Simulation Methods to Explore Efficient H-type Vertical Axis Wind Turbine

• Main Authors: Meng-Chieh Lee, 李孟杰
• Other Authors: Ching-Huei Lin
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/41913603405542370143

碩士 === 健行科技大學 === 電機工程系碩士班 === 102 === Small vertical axis wind turbines have the benefits of simple structure and noiseless. It is suitable to be applied for living houses. In this paper a CFD software is adopted to simulate H-type rotors with the same cross section area under three different configuration ratios and to investigate which configuration has maximum energy output. Simulation models are built up using two most popular software (SolidWorks and ZWcad) and compared their simulation outputs. The average torque of rotor model from SolidWorks is about 18% of that from ZWcad. It indicates the modeling software ZWcad is more suitable for our CFD simulation software. Three different blades with pitch angle of -5°, 0° and 5° are simulated and analyzed. The results demonstrate the average torque for the blade with 5° is the largest as the angular speed is less than 700RPM and has the best performance over all. This result can be a reference for high efficiency vertical axis wind turbines design. The tall and thin H-type rotor is found to have the maximum output power based on the CFD simulation results for the rotors with different configuration ratios.