沙伯紐斯型垂直軸風力機數值模擬與實驗分析

Numerical Simulation and Experimental Studies of Savonius-type Vertical Axis Wind Turbines

王明新(Ming-Hsin Wang)

指導教授 ： 林鴻佳

國立虎尾科技大學/工程學院/航空與電子科技研究所/碩士(2010年)

https://doi.org/10.6827/NFU.2010.00068

摘要

本論文主要針對沙伯紐斯型風力機實驗研究與使用數值模擬計算流體
力學FLUENT 6.3 商業套裝軟體，來進行垂直軸風力機之沙伯紐斯型葉片與班尼斯型葉片分析風力機效率轉換及流場變化關係。數值模擬求解非穩態二維不可壓縮流場，風速為7 公尺/秒對旋轉中葉片所產生之尖端速度比與力矩影響作最大功率係數曲線分析，且利用風洞實驗量測垂直軸風力機，在風速為6 公尺/秒、8 公尺/秒下改變風力機不同負載，將所得實驗數據進行最大功率係數曲線分析。本研究顯示實驗與數值模擬之沙伯紐斯型葉片結果與參考文獻相符合，而班尼斯型葉片實驗與參考文獻相符合，但數值模擬在求解高尖端速度比1.0 以上時，由於流場複雜度增加與參考文獻會有數值誤差問題發生。

關鍵字

沙伯紐斯型 ； 垂直軸風力機 ； FLUENT

並列摘要

This research investigates the performance and flow field of Savonius-type wind turbinesby designing experiments and by using the computational fluid dynamics (CFD) FLUENT 6.3
commercial software for both the original Savonius-type and the Benesh-type blades. Thepower coefficient curves of wind speed, 7 m/s, are computed by numerically solving the
unsteady two-dimensional incompressible turbulent flow. The power coefficient curves of vertical axis wind turbines are measured in the wind tunnel under two wind speeds, 6 m/s and
8 m/s, by varying the load imposed on the wind turbine by the dynamometer. Thisinvestigates shows that the experimental and numerical simulation results of Savonius-typeblade are consistent with the reference literatures. For the Benesh-type blade experimentresults are consistent with the reference literatures, but numerical simulation results for tip speed ratio more than 1.0 shows discrepancy as compared with the experimental data,probably due to more complicated flow field phenomenon at tip speed ratio greater than 1.0.

並列關鍵字

Savonius ； VAWT ； FLUENT

參考文獻

[1] Renewable Energy Policy Network for the 21st Century (2008).2007 Global

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Reinhold Company,1983.

[5] Savonius SJ., “The S-rotor and its applications,” Mechanical Engineering May

Performance Data for Two- and Three- Bucket Savonius Rotors,”Sandia National