達里厄型垂直軸風力機空氣動力模擬與數值分析

Numerical Analysis and Aerodynamics Simulation of Darrieus Type Vertical Axis Wind Turbine

唐翊捷(Yi-Chieh Tang)

指導教授 ： 蔡建雄 ； 王耀男

國立屏東科技大學/工學院/車輛工程系所/碩士(2016年)

摘要

在垂直軸風力機運轉時，性能優劣受到風機設計及環境因素影響，為確保能設計出性能良好之垂直軸風力機，研究人員須瞭解翼型之空氣動力特性及垂直軸風力機周遭的環境結構，作為設計垂直軸風力機之目標。本研究是利用計算流體力學的方法，探討垂直軸風力機之翼型空氣動力特性及環境因素對垂直軸風力機之性能影響， 而選用的翼型為DU 06-W-200翼型。
在研究結果指出，紊流模式的選用及網格獨立性分析，紊流模式以k-ε Realizable作為選用的模式，網格以y+作為指標函數，其值須在5以下。而在不同環境參數及垂直風機本身之設計對垂直風機性能的影響，要提高垂直風機在高尖速比時的性能，可以考慮將垂直風機旋轉半徑加大或者將垂直風機放置於高樓頂樓處，使垂直風機能受到傾斜風向的作用。

關鍵字

計算流體力學 ； Darrieus ； 垂直風機性能 ； DU 06-W-200翼型

並列摘要

When Vertical Axis Wind Turbine (VAWT) operated, it performance is based on the wind turbine structure design and environmental factors. In order to design well performance wind turbine, it is highly important for engineers to understanding airfoil’s Aerodynamic characteristics and vertical axis wind turbine’s established environment, these two factors are main parameters to be considered.
This study is by using of Computational Fluid Dynamics (CFD) to find out that Vertical Axis Wind Turbine’s Aerodynamic characteristics and environment factors in terms of influence on the performance, in this study the prototype is used DU 06-W-200 Airfoil profile.
In this study results, take investigation of Turbulence model and grid independence analysis. It shows choosing k-ε Realizable in Turbulence model, and grid in y+ in set of indicator function; value requirement here must below 5. Then is aim at how the different environment factors and wind turbine structure design affect wind turbine performance. To increase VAWT’s efficiency in high Tip Speed Ratio, it can be seen increased rotating radius of VAWT or placed in tall building top floor, which benefit from tilt wind effect.

並列關鍵字

Computational Fluid Dynamics (CFD) ； Darrieus ； VAWT performance ； DU 06-W-200 Airfoil

參考文獻

24.張智堯，2011，螺旋式垂直風機的氣動力模擬，碩士論文，國立中央大學，機械工程研究所，桃園。

23.鄭沛倫，2011，支撐臂效應與斜式旋翼垂直軸風力機三維氣動力模擬，碩士論文，國立中央大學，機械工程研究所，桃園。

11.L. X. Zhang, Y. B. Liang, X. H. Liu, Q. F. Jiao, and J. Guo ,2013. Aerodynamic Performance Prediction of Straight-Bladed Vertical Axis Wind Turbine Based on CFD.

12.T. Maitre, E. Amet and C. Pellone,2013. Modeling of the Flow in a Darrieus Water Turbine: Wall Grid Refinement Analysis and Comparison with Experiments, Renewable Energy, vol. 51, pp. 497 – 512.

13.Eren Demircan ,2014. Design And Analysis of A Vertical Axis Water Turbine For River Applications Using Computational Fluid Dynamics.p.20.22-23.24.