Experimental and numerical study of a hydrokinetic turbine based on tandem flapping hydrofoils
Experimental and numerical study of a hydrokinetic turbine based on tandem flapping hydrofoils
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基于串联扑动水翼的水力涡轮机实验与数值研究
DOI：
10.1016/j.energy.2019.02.188
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发表时间：
2019-05
期刊：
影响因子：
9
通讯作者：
Lei Jie
中科院分区：
文献类型：
--
作者：
Xu Wenhua;Xu Guodong;Duan Wenyang;Song Zhijie;Lei Jie
通过实验和数值模拟相结合的方法，研究了基于串列扑翼的水轮机能量回收问题。采用曲轴连杆机构将水翼的摆动运动转化为回转运动。后部水翼在前部水翼的涡流中进行振荡运动。两个水翼之间的纵向间距L x是固定的，而两个水翼拍打运动之间的相位差ε可以从−π移动到π。整体相移Φ由L x、ε和斯特劳哈尔数S t组合而成，用来描述涡旋相互作用模式。测试了S t和Φ对能量收集的影响。实验数据表明，在S t=0.235时，单翼型的水动力效率最高，为25.2%。找到了串列式水翼能量收集的最佳参数。在Φ/2π≈为0.3时，S t=0.24时，水动力效率最高。通过数值模拟研究了这些典型情况下的涡旋相互作用模式。研究了导致涡轮效率最高和最低的有利涡型和不利涡型。
The energy harvesting of a hydrokinetic turbine based on tandem flapping hydrofoils is investigated experimentally and numerically. The mechanisms with crankshafts and connecting rods are adopted to convert the oscillatory motions of the hydrofoils into rotary motions. The hind hydrofoil performs oscillatory motion in the vortex flow of the fore hydrofoil. The longitudinal spacing L x between the two hydrofoils is fixed while the phase difference ε between the flapping motions of the two hydrofoils can be shifted from− π to π. The global phase shift Φ, which is the combination of L x, ε and the Strouhal number S t, is adopted to describe the vortex interaction modes. The effects of S t and Φ on the energy harvesting have been tested. Experimental data show that the highest hydrodynamic efficiency of single hydrofoil is 25.2% at S t= 0.235. The optimum parameters for the energy harvesting of tandem hydrofoils have been found. The highest hydrodynamic efficiency is found at S t= 0.24 with Φ/2 π≈ 0.3. Numerical simulations are performed to study the vortex interaction modes of these typical cases. The beneficial vortex pattern and the detrimental vortex pattern, which result in the highest and lowest efficiency of the turbine, have been investigated.
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不同系列箔片形状扑动水翼能量提取的数值研究
影响因子：
9
作者：
Wang Ying;Sun Xiaojing;Huang Diangui;Zheng Zhongquan
通讯作者：
Zheng Zhongquan
影响因子：
2
作者：
T. Kinsey;G. Dumas
通讯作者：
T. Kinsey;G. Dumas
DOI：
10.2495/fsi030081
发表时间：
2003-05
期刊：
WIT Transactions on the Built Environment
影响因子：
--
作者：
K. D. Jones;K. Lindsey;M. Platzer
通讯作者：
K. D. Jones;K. Lindsey;M. Platzer
影响因子：
3.7
作者：
Q. Zhu
通讯作者：
Q. Zhu
影响因子：
9.6
作者：
J. Young;J. Lai;M. Platzer
通讯作者：
J. Young;J. Lai;M. Platzer