| The flap-type wave energy converters have attracted more attentions for its structural simplicity and high capture efficiency. In this paper, a kind of parallel-intersecting-cylinder flap wave energy converters was studied using AQWA based on the potential flow theory. The capture efficiency of the parallel-intersecting-cylinder flap converters was investigated by changing space ratio of the cylinders, structural damping, net buoyancy ratio, water depth, wave height, draft depth and tidal level, which was compared with plate flap converters as well. The results show that the performance of the parallel-intersecting-cylinder flap converters is generally better than that of the plate flap one. Capture efficiency of the converter increase as the space ratio of the cylinders within the scope of this paper. The change of water depth caused by the tide has a significant impact on the capture efficiency, which should be considered carefully in practical application. |
