基于数值模拟的波浪诱发悬臂板振动获能研究

Study on Wave-induced Vibration Energy Harvest of a Cantilever Plate based on Numerical Simulation

在准确的数值造波的基础上,本文采用单向流固耦合的方法,研究了悬臂板在波浪作用下的振动获能问题。为了剖析悬臂板上波浪能转化机制,比较悬臂板动能、重力势能和应变能的时程变化,衡量各部分能量占比,找出最优能量。通过对不同物理参数下的计算分析,总结其对悬臂板获能效率的影响程度及规律,得出了对悬臂板振动和获能的关键影响因素以及提高获能效率的通用方法。

On the basis of accurate numerical wave simulation,this paper studied the vibration energy harvest problem of cantilever plate under wave action by using one-way fluid-structure coupling method.In order to analyze the wave energy conversion mechanism on the cantilever plate,the time-history changes of the kinetic energy,gravitational potential energy and strain energy of the cantilever plate were compared,and the energy proportion of each part was measured to find the optimal energy.Through the calculation and analysis of different physical parameters,the influence degree and law on the energy harvest efficiency of the cantilever plate are summarized,the key influencing factors on the vibration and energy harvest of the cantilever plate and the general method to improve the energy harvest efficiency are obtained.