波浪作用下浮式网箱与垂直轴风机综合平台水动力响应试验

Experimental study on the hydrodynamic response of a floating aquaculture cage integrated with a vertical axis wind turbine in waves

为探索海洋养殖与海上风电融合发展的可行性,以浮式网箱与垂直轴风机综合平台为研究对象,通过物理模型试验的方法研究该综合平台在规则波作用下的水动力响应;采用1∶100的比尺制作模型,通过CCD(电荷耦合)高速相机及自主开发程序分析运动幅值,并采用拉力传感器采集系泊拉力时域值。结果显示:浮式网箱与垂直轴风机综合平台在波高为9 m的极限工况下,纵荡最大值为4.75 m、垂荡最大值为4.21 m、纵摇最大值为8.35°,稳定性基本满足规范要求;在波浪作用下,浮式网箱与垂直轴风机综合平台的运动响应与系泊力均与波高呈正相关,纵荡和垂荡与波浪周期呈正相关,而纵摇和系泊力与周期呈负相关;同一工况下迎浪侧系泊力明显大于背浪侧系泊力,两者之间最大差值可达75%。研究结果可为风渔融合结构的研发设计提供参考。

To explore the feasibility of the integration of marine aquaculture and offshore wind power technologies,this study offers a detailed hydrodynamic analysis of an integrated platform combining a floating aquaculture cage and a vertical axis wind turbine.Hydrodynamic responses of the platform in regular waves were studied based on a physical model test,which was carried out with a scale ratio of 1 to 100.The motion amplitudes of the physical model were captured by a charge-coupled device(CCD)camera and were processed by a self-developed computer program.The time-domain mooring line tension was collected by a couple of tension sensors.The results showed that in the extreme working condition with a wave height of 9 m,the maximum surge,heave and pitch of the physical model were 4.75 m,4.21 m and 8.35°,respectively,which demonstrated that the stability of the integrated platform basically meet the requirements of the standard.In regular waves,the motion responses as well as the mooring line tension of the physical model were positively correlated with wave height.Furthermore,the surge and heave of the physical model were positively correlated with wave period,while the pitch and mooring line tension of the physical model were negatively correlated with wave period.Moreover,it was found that in the same working conditions,the windward side mooring line tension was significantly greater than that at the leeward side,and the maximum difference between the two could reach up to 75%.In summary,this study could offer references for the design and development of integrated aquaculture facilities.