碩士 / 國立成功大學 / 航空太空工程學系 / 102 / This research uses commercial software, ANSYS CFX, to simulate the flow-field and to investigate physical property for the blade of horizontal axis wind turbine (HAWT) under normal wind speed. In the ANSYS CFX, we use a high resolution scheme and unsteady incompressible Navier - Stokes equations to simulate the flow field of the HAWT. The grid system is unstructured mesh which is generated by ANSYS ICEM CFD. The turbulence model is shear stress transport (SST) and detached eddy simulation (DES) .
The investigated blade is designed by Zifeng Yang. A winglet in the tip of the blade is used to study it effects on the wind power efficiency and noise. Under stationary condition, the blade with or without winglet is simulated. Under rotating condition, the blade with winglet, without winglet, and with length-changed winglet are simulated for pressure, velocity, power efficiency, and noise. The final results show the winglet can reduce pressure in the flow field and promote power efficiency, but it is only difference on the noise level.
| Identifer | oai:union.ndltd.org:TW/102NCKU5295017 |
| Date | January 2014 |
| Creators | Chung-HsienShih, 石忠憲 |
| Contributors | San-Yih Lin, 林三益 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 82 |
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