EXPERIMENTS IN DIRECT ENERGY EXTRACTION THROUGH FLAPPING FOILS
EXPERIMENTS IN DIRECT ENERGY EXTRACTION THROUGH FLAPPING FOILS
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发表时间：
2008
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影响因子：
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通讯作者：
B. Simpson;F. Hover;M. Triantafyllou
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作者：
B. Simpson;F. Hover;M. Triantafyllou
对鱼类的研究表明，它们有能力从非定常流动和涡旋结构中提取能量。实验证明，在连续控制摇摆幅度、Strouhal数和摇摆与摇摆之间的相位角等参数的情况下，翼片可以像鱼一样做正弦摇摆(升沉)和摇摆(俯仰)运动，可以有效地从非定常流动中提取能量。高宽比分别为4.1、5.9和7.9的NACA 0012铝箔在雷诺数为13,800的情况下进行了测试。简单的正弦运动可实现高达43%±3%的总效率。
Work with fish has shown their ability to extract energy from unsteady flows and vortical structures. We demonstrate experimentally that foils performing a sinusoidal sway (heave) and yaw (pitch) motion, similar to a fish, with continuously controlled parameters such as yaw amplitude, Strouhal number, and phase angle between sway and yaw, can efficiently extract energy from unsteady flows. Aluminum NACA 0012 foils with aspect ratios of 4.1, 5.9, and 7.9 were tested at Reynolds numbers ~13,800. Overall efficiencies of up to 43 ± 3% are achieved with simple sinusoidal motions.