Numerical And Experimental Analysis of Backward Bent Duct Buoy (BBDB) Wave Energy Converter
Numerical And Experimental Analysis of Backward Bent Duct Buoy (BBDB) Wave Energy Converter
复制标题
后弯导管浮标（BBDB）波浪能转换器的数值和实验分析
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
kyoung
中科院分区：
文献类型：
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作者：
W. Koo;kyoung
采用数值模拟和实验相结合的方法，对一种漂浮式波浪能转换器--后向弯管浮标（BBDB）的水动力性能进行了分析。采用基于势流理论和混合欧拉-拉格朗日（MEL）方法的二维时域、完全非线性数值波浪水槽（NWT）技术模拟了BBDB系统的波体相互作用。对舱内非线性自由面进行了特殊处理，以反映由于物体形状引起的脉动水柱的粘性效应。还考虑了气室中时变气流速度的气动压力。在该系统上进行了实验，以验证数值结果。与调谐的粘性阻尼系数的NWT模拟被发现是相关的合理以及与实验值为各种入射波频率。
A floating-type wave energy converter, Backward Bent Duct Buoy (BBDB) was analyzed its hydrodynamic performance by numerical and experimental methods. A two-dimensional time-domain, fully nonlinear numerical wave tank (NWT) technique based on potential theory and the mixed Eulerian-Lagrangian (MEL) approach was used to simulate the wave-body interaction of the BBDB system. The nonlinear freesurface inside the chamber was specially treated to represent the viscous effect of fluctuating water column due to the shape of body. The pneumatic pressure of the time-varying airflow velocity in the chamber was also considered. An experiment on the system was carried out to verify the numerical results. The NWT simulations with a tuned viscous damping coefficient were found to be correlated reasonably well with experimental values for various incident wave frequencies.