In order to provide reference data for the detailed design of the first 100 kW pneumatic backward bent duct buoy (BBDB) wave energy conversion (WEC) device ‘WaveLoong’ in China, a series of physical model tests were conducted in a wave flume. The effect of air chamber height, bow bottom plate length, mooring method and wave parameter on the distribution of operational range with high capture width ratio (CWR) were explored. Results revealed that the performance of a short air chamber is superior to that of a tall air chamber, and that the converter with bow bottom plates exhibit bimodal CWR distribution, while the converter with a floating ball mooring system exhibits trimodal CWR distribution and thus shows the widest working range among all tested cases. The influence of four representative actual waves on the mooring force of the wave energy converter with a floating ball mooring system was studied, and it was found that the maximum mooring force acting on the converter occurred under medium large wave conditions rather than the most extreme wave conditions.

中文翻译：

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气动波动能转换器性能的物理模型研究


为了为国内首台 100 kW 气动后弯管道浮标 （BBDB） 波浪能转换 （WEC） 装置“WaveLoong”的详细设计提供参考数据，在波浪槽中进行了一系列物理模型测试。探讨了气室高度、船首底板长度、系泊方式和波浪参数对高捕获宽度比 （CWR） 作业距离分布的影响。结果表明，短气室的性能优于高气室，且具有艏底板的转换器表现出双峰 CWR 分布，而带有浮球系泊系统的转换器表现出三峰 CWR 分布，因此在所有测试案例中表现出最宽的工作范围。研究了 4 个代表性实际波对浮球系泊系统波浪能转换器系泊力的影响，发现作用在转换器上的最大系泊力发生在中等浪条件下，而不是最极端的波浪条件下。