半球形多向波聚合波道振荡水柱气室优化设计

为了解决振动水柱式波浪能转换装置收集多向波浪问题,本文设计了半球形多向聚合波道振荡水柱气室结构,以适合远海单点波浪能采集和发电。在规则波正向入射条件下,基于流体仿真分析软件(FLUENT)、流体动力学连续性假设和粘性不可压缩流体动量守恒的运动方程(Navier-Stokes方程)建立半球形振荡气室和三维数值波浪水槽模型。仿真结果表明:增设气室后壁,合理设计波道开口角度实现多向迎波捕获波浪能,优化前壁形状可降低波浪触底反射带来的能量耗散,同时提高了气室内空气压强和出气口速度,有效提升波浪能俘获效率,为后续发电的二次能量转换提供高效的空气动力。

Research on the Hemispherical Oscillating Water Column Air Chamber for the Multi-Directional Wave Energy Harvesting

In order to collect any direction wave energy with the oscillation water column device,the hemispherical multi-directional oscillating water column chamber structure is proposed to harvest the single-point wave and generate electric power in the ocean.When the regular wave inflow forward,a hemispherical oscillating air chamber and a three-dimensional numerical wave flume model are established based on fluid simulation analysis software(FUENT),fluid dynamics continuity hypothesis and incompressible viscous fluid Navier-Stokes equation(N-S equation).The simulation results show that the hinder wall of the air chamber will improve the wave energy harvesting efficiency.The splayed angle of the wave channel suit to capture the multi-directional wave energy.The pressure of air-fluid in the air chamber and the velocity of the air outlet will increase with the novel structure.It provides the higher secondary energy conversion aerodynamic force for the electric power generation with the turbine.