Experimental and numerical study of hydrodynamic responses of a new combined monopile wind turbine and a heave-type wave energy converter under typical operational conditions
Experimental and numerical study of hydrodynamic responses of a new combined monopile wind turbine and a heave-type wave energy converter under typical operational conditions
复制标题
典型运行条件下新型组合式单桩风力发电机和升沉型波浪能转换器的水动力响应实验与数值研究
DOI：
10.1016/j.oceaneng.2018.03.090
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发表时间：
2018
影响因子：
5
通讯作者：
Ou Jinping
中科院分区：
文献类型：
--
作者：
Ren Nianxin;Ma Zhe;Fan Tianhui;Zhai Gangjun;Ou Jinping
本文提出了一种新的概念，即将一种小型风力涡轮机与一种升沉式波浪能转换器相结合，即“MWWC”（Monopile-WT-WEC- Combination）系统。采用时域数值模拟和1：50模型试验相结合的方法，研究了典型作业海况下MWWC系统的水动力响应。在数值模型中，采用AQWA程序计算了平台和WEC的水动力载荷，AQWA程序可用于模拟包括张力腿平台和WEC之间的机械和水动力耦合的多体系统。在海岸与近海工程国家重点实验室进行了缩尺模型试验。采用两个非线性空气阻尼器对WEC装置的动力输出系统进行了模拟。阐明了典型工况下MWWC系统的主要水动力特性。所得到的波浪能转换器的波功率特性和最大动力输出阻尼力对动力输出系统的工作性能优化设计具有重要的指导意义。数值和实验结果进行了比较，并取得了良好的协议。
This paper deals with a new concept by combining a monopile type wind turbine and a heave-type wave energy converter, that is referred as the ‘MWWC’ (Monopile-WT-WEC- Combination) system herein. Hydrodynamic responses of the MWWC system under typical operational seas cases have been investigated by using both time-domain numerical simulations and scale model tests (1:50). For the numerical model, hydrodynamic loads of the monopile and the WEC are calculated by the AQWA code, which is available for modeling multi-body systems including both mechanical and hydrodynamic couplings between the TLP and the WEC. The scale model tests have been done in State Key Laboratory of Costal and Offshore Engineering (SLCOE). The power-take-off (PTO) system of the WEC device is simulated by two nonlinear air-dampers. Main hydrodynamic characteristics of the MWWC system under typical operational sea cases have been clarified. The obtained wave power characteristic and maximum PTO damping force of the WEC are very helpful for the optimal design of the operational performance of the PTO system. Numerical and experimental results are presented and compared, and good agreements are achieved.