基于實驗設計法的漂浮擺式波浪能發電裝置水動力性能研究與形狀優化

RESEARCH ON HYDRODYNAMIC PERFORMANCE AND SHAPE OPTIMIZATION OF FLOATING PENDULUM WAVE ENERGY CONVERTER BASED ON THE METHOD OF DESIGN OF EXPERIMENT

本文提出了一種基于實驗設計的漂浮擺式（floating pendulum）波浪能發電裝置的形狀優化方法。通過優化漂浮擺的外形幾何參數，使其在相同的波浪條件下具有最大擺角，從而實現最大功率輸出。本文首先利用水動力計算軟件AQWA對漂浮擺波浪能發電裝置的主體結構進行了流體建模，並通過仿真與實驗的結果對比分析，驗證了流體模型的正確性，其次采用驗證後的漂浮擺仿真模型計算了頻域範圍內的水動力特性，最後，應用實驗設計方法對規定範圍內的漂浮擺形狀抽取樣本，獲得了五組不同形狀的漂浮擺，計算其在時域中的響應並求出了最大擺角，統計分析得出了該範圍內所有樣本漂浮擺在波浪中的擺角特性，從而選出最優形狀的漂浮擺。

This paper proposed a shape optimization method for the floating pendulum wave energy converter (WEC) based on the design of experiment. The maximum power output is achieved by optimizing the geometry of the floating pendulum so that it has the maximum swing angle under the same wave conditions. In this paper, the hydrodynamic calculation software AQWA is used to model the main structure of the floating pendulum WEC. The correctness of the fluid model is verified by the comparison of simu-lation and experimental results. Then the hydrodynamic characteristics in the frequency domain are calculated by using the verified floating pendulum simulation model. Finally, the optimized shape of the WEC is determined by running five simulations in the time domain and using the design of experiment method.