基于浮式风机的振荡水柱式波能装置水动力特性研究

海洋能源资源的不稳定性带来的利用率低和发电质量差是现阶段海洋能源开发的主要制约因素，而多能种的混合开发方式是现阶段稳定海洋能发电功率，提升发电效率，降低发电成本的主要手段，为此，本项目拟提出一种基于半潜浮式风机，嵌入振荡水柱的风浪能混合发电平台，实现风浪能优势互补，提高系统的发电效率和输电质量。本项目首先基于半潜平台分别结合风机及振荡水柱建立浮式风机系统模型和振荡水柱式波能转换系统模型，结合空气动力学及流体动力学分别探讨风浪能转换系统模型动力学特性，在此基础上建立半潜平台—振荡水柱—浮式风机全耦合系统模型，基于水动力学半解析算法和尾涡理论建立该系统的半解耦数值算法，探索风机系统与振荡水柱系统的力学耦合特性及运动响应，分别结合其动力输出系统，掌握风浪混合系统能量输出相互作用机理，为多能种混合利用的高效性和稳定性提供有效的技术理论和工程应用指导。

The low utilization rate and poor power generation quality caused by the instability of marine energy resources are the main constraints for the development of marine energy, and the multi energy hybrid development mode is the main means to stabilize the power generation of marine energy, improve the efficiency of power generation and reduce the cost of power generation so far. In such case, this project proposes a wind wave energy hybrid power generation platform based on semi-submersible floating platform embedded with oscillating water column, which can realize the complementary advantages of wind wave energy and improve the power generation efficiency and transmission quality of the system. In this project, based on the semi-submersible platform, the floating wind turbine system model and the oscillating water column wave energy conversion system model are established respectively, and the wind and wave energy conversion system dynamic characteristics are discussed respectively in combination with aerodynamics and hydrodynamics. On this basis, a fully coupled system model of semi-submersible platform, oscillating water column and floating wind turbine is established. Based on the semi analytical algorithm of hydrodynamics and wind turbine wake theory, the semi decoupled numerical method of the system is established to explore the mechanical coupling characteristics and motion response of the wind turbine system and the oscillating water column system. Combined with their power take-off systems, the interaction mechanism of energy output of wind and wave system is mastered, which provides effective technical theory and engineering application guidance for the efficiency and stability of multiple energy utilization.