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双浮子点吸收式波能转换装置参数研究
王腾, 李树勃, 肖炜杰, 包兴先
中国石油大学(华东)石油工程学院
摘要:
摘 要:点吸收式波能转换装置是具有较好应用前景的一种波浪能开发利用装置。点吸收式波能转换装置的参数设计直接影响到波浪能开发利用的可行性与有效性。研究中针对青岛斋堂岛目标海域海况,通过数值模拟首先应用单因素敏感性分析法分析了双浮子点吸收式波能转换装置的结构尺寸、锚固形式、波流夹角、PTO阻尼、PTO刚度等参数对装置俘能功率的独立影响规律。之后考虑多参数的综合影响,通过运用稳健设计方法,以上述参数为控制因子并确定合理的变动水准,将俘能功率作为评价标准,选取合理的正交实验L矩阵,得到了不同参数组合情况下的装置俘能功率并进行统计分析。结果表明,浮子尺寸、PTO阻尼、波流夹角对装置俘能功率影响较大,而PTO刚度、锚链与铅垂线夹角、锚链与波浪在水平面内的夹角对俘能功率影响不明显。提出的参数研究方法可为其他海域点吸收式波能转换装置参数设计提供参考。
关键词:  点吸收  双浮子波能转换装置  参数研究  俘能功率  稳健设计方法
DOI:
分类号:
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
A parameter study of two-body point absorption wave energy converters
Wang Teng, Li Shubo, Xiao Weijie, Bao Xingxian
School of Petroleum Engineering, China University of Petroleum
Abstract:
Abstract: The point absorption wave energy converter is a wave energy development and utilization device with good application prospects. The parameter design of the point absorption wave energy converter directly affects the feasibility and effectiveness of wave energy development and utilization. In this study, aiming at the real sea conditions in Zhaitang Island, China, the effect of different parameters such as buoy's size, anchorage form, the angle between the direction of wave propagation and that of current, PTO damping and PTO stiffness on the two-body point absorption wave energy converter performance is analyzed by the single factor sensitivity analysis method, respectively. Then the robust design method is applied to get the comprehensive influence of these different parameters on the captured power efficiency of the converters. In this method, the captured power is token as the evaluation criterion, the reasonable change levels of these parameters are considered, and a reasonable orthogonal experimental L matrix is constructed. Several cases of the captured power efficiency under various parameter combinations are analyzed. The results show that the PTO damping, buoy's diameter, the angle between the direction of wave propagation and that of current have great influences on the captured power efficiency. While the angle between the anchor chain and the plumb line, the angle between the projection of the anchor chain in the horizontal plane and the direction of the wave, and the PTO stiffness have little effect on the captured power efficiency. The proposed method can be used for the parameter design of point absorption wave energy generator in other sea areas.
Key words:  point absorption  two-body wave energy converters  parameters study  captured power  robust design method
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