Numerical investigation on energy extraction of flapping hydrofoils with different series foil shapes
Numerical investigation on energy extraction of flapping hydrofoils with different series foil shapes
复制标题
不同系列箔片形状扑动水翼能量提取的数值研究
DOI：
10.1016/j.energy.2016.06.092
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发表时间：
2016-10
期刊：
影响因子：
9
通讯作者：
Zheng Zhongquan
中科院分区：
文献类型：
--
作者：
Wang Ying;Sun Xiaojing;Huang Diangui;Zheng Zhongquan
扑翼作为一种新型的能量提取方式，显示出广阔的应用前景。如何利用拍动翼来提高风能或水能的能量提取效率（η），已成为该领域研究者关注的热点。本文对NACA 4系列和NACA 6系列翼型的扑翼能量提取进行了数值研究。首先，通过与实验结果的对比，验证了仿真结果的正确性。其次，采用不同系列的翼型，对在流场中作简谐运动的扑翼翼能量提取进行了仿真：①最大厚度不同的对称翼型; ②最大厚度位置不同的对称翼型; ③最大厚度、最大厚度位置和弯度相同，但最大弯度位置不同的非对称翼型;最大厚度、最大厚度位置和拱度位置相同，但最大拱度不同的非对称翼型。研究发现，对于不同最大厚度的对称翼型，η基本上随最大厚度的增大先增大后减小;对于不同最大厚度位置的对称翼型，η随最大厚度位置从前缘向后缘移动先增大后减小;对于相同厚度的非对称翼型，η随弯度的增大而减小;与最大起拱位置相比，最大厚度对η的影响更大。
As a new mode of energy extraction, flapping foils show broad application prospects. How to improve the energy extraction efficiency (η) of wind or hydro energy with flapping foils has become a focused issue for scientists in this field. This paper numerically investigated the energy extraction of flapping hydrofoil with different NACA 4 and NACA 6 series foil shapes. Firstly, compared with experimental results, the simulation results were validated. Secondly, by adopting different series of foil shapes, simulation was conducted for energy extraction of flapping foils which were moving harmonically in current: ① symmetric foils with different maximum thicknesses; ② symmetric foils with different maximum thickness positions; ③non-symmetric foils with same maximum thickness, maximum thickness position and camber, but different maximum camber positions; ④ non-symmetric foils with same maximum thickness, maximum thickness position and camber position, but different maximum cambers. It is found that for symmetric foils with different maximum thicknesses,ηbasically increases first and then decreases with the increase of maximum thickness; for symmetric foils with different maximum thickness positions,ηfirst increases and then decreases when maximum thickness position moves from the leading edge to the trailing edge; for non-symmetric foils with same thickness,ηshows lower value with larger camber; compared with maximum camber position, the maximum thickness shows larger influence onη.
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作者：
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DOI：
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发表时间：
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期刊：
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影响因子：
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作者：
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