基于TLP浮式风机的分块垂荡点吸式波浪能装置的实验研究

Experimental study on the combination of split heave point absorption wave energy converters and TLP type floating turbine

面对海洋中庞大的波浪能资源,如何对其高效利用是目前仍需解决的一大难题。针对中国南海海域周期短、波高小的海况特点,本文提出一种与张力腿式平台(TLP)相结合的分块垂荡点吸收式波浪能装置模型。通过物理水池试验,测量分析分块浮子的水动力特性和波能捕获效率,同时与传统浮子的性能进行对比,探讨浮子分块后波浪能装置获能的优化效果。结果表明,分块浮子呈现出新的水动力特性,在低海况下装置对短周期波的能量捕获效率得到大幅提升,但在特定浪向角下会显著增大依附平台的纵摇运动,需要进一步优化张紧式系泊系统。

Effective use of numerous wave energy resources in the ocean remains a problem to be solved.Due to the wave conditions for low periodic and small wave height in the South China Sea,a model combining a split heave point absorber with a tension leg platform(TLP)was proposed.Through a physical model test,the hydrodynamic characteristics and wave energy capture efficiency of the split float were measured and ana⁃lyzed,then compared with the whole float.And the optimal wave energy capture of the split float was dis⁃cussed.The results show that the split float presents different hydrodynamic characteristics,and the energy capture efficiency of the device for small periodic waves is greatly improved in the low sea state,but the pitch motion of the platform is significantly increased in the specific wave direction,which requires further optimi⁃zation of the tension leg system.