波浪能发电装置液固耦合流体增频特性研究

Research on liquid-solid coupling fluid up-conversion characteristic of wave-energy power generation device

我国近海区域海浪呈现低频低幅特点，而实现增频、增幅就成为高效波浪发电的关键技术。借助于Flow-Simulation仿真软件的仿真方法，对1：1~4：1等几种变径比内腔流道结构开展研究，对比分析了在低频、低幅海浪激励时，液态介质受迫惯性振动呈现的液压增频、增幅响应。研究结果表明，优化变径比的液压增频、增幅响应，可以自适应增强作用在弹性薄膜上的表面力和形变量，从而减少能量转换过程的机械能损失，达到波浪能高效吸纳转化的研究目标。

Constrained by low frequency and amplitude of waves in offshore area of China, it is a concern to magnify the two factors for improving efficiency of wave-energy power generation device. By using the software of Flow-Simulation, we perform a research on the structure of inner flow paths with four radius ratio of 1：1 to 4：1. In the research, the hydraulic up-conversion and amplification responses arising from forced oscillation of liquid medium under a low frequency and amplitude background are analyzed and compared. The analysis indicates that the optimization of radius ratio of flow paths can increase the surface force and deformation of the elastic film, hence reducing the mechanical energy loss in the energy conversion process and increasing absorb-ing and transforming efficiency of wave energy.