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Theoretical and Experimental Study of A coaxial double-buoy wave energy converter

China Ocean Engineering 2021年第3期35卷 454-464页

作者： LI De-min DONG Xiao-chen SHI Hong-da LI Yan-ni Department of Ocean Engineering College of EngineeringOcean University of ChinaQingdao 266100China Shandong Provincial Key Laboratory of Ocean Engineering Ocean University of ChinaQingdao 266100China Qingdao Municipal Key Laboratory of Ocean Renewable energy Ocean University of ChinaQingdao 266100China Pilot National Laboratory for Marine Science and Technology(QingDao) Qingdao 266200China

The double-body heave wave energy converter(WEC)is one of the most conducive devices to absorb the wave energy from relative motion while the law of which is not well *** paper makes an in-depth study on this wave energy converter,by means of the combination of theoretical analysis and physical model *** hydrodynamic characteristics and energy capture of the double-buoy under constant and linear Power Take-Off(PTO)damping are *** of absolute mass and mass ratio are discussed in the theoretical *** displacement amplitude and average power output are tested in the experiment to analyze the effect of the wave period and outer buoy’s mass,while the capture width ratio(CWR)is also *** show that the wave period and mass of the buoys have a significant effect on the *** forms of PTO damping have no influence on the optimal wave period and mass ratio of this *** is recommended to select the double-buoy converter with a mass ratio of 0.80 and to place it in an area with the frequent wave period close to the natural period of the outer buoy to achieve the optimal energy capture.

关键词： coaxial double-buoy wave energy converter hydrodynamic characteristics model test power take-off

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Hydrodynamic Performance and Power Absorption of A coaxial doublebuoy wave energy converter

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China Ocean Engineering 2023年第3期37卷 378-392页

作者： LI De-min DONG Xiao-chen LI Yan-ni HUANG He-ao SHI Hong-da College of Engineering Ocean University of ChinaQingdao 266400China Shandong Provincial Key Laboratory of Ocean Engineering Qingdao 266100China Qingdao Municipal Key Laboratory of Ocean Renewable energy Ocean University of ChinaQingdao 266100China

As an important wave energy converter(WEC),the double-buoy device has advantages of wider energy absorption band and deeper water adaptability,which attract an increasing number of attentions from *** paper makes an in-depth study on double-buoy WEC,by means of the combination of model experiment and numerical *** Response Amplitude Operator(RAO)and energy capture of the double-buoy under constant power take-off(PTO)damping are investigated in the model test,while the average power output and capture width ratio(CWR)are calculated by the numerical simulation to analyze the influence of the wave condition,PTO,and the geometry parameters of the *** AQWA-Fortran united simulation sy stem,including the secondary developme nt of AQWA software coupled with the flowchart of the Fortran code,models a new dynamic *** viscous damping and hydraulic friction from WEC system are measured from the experimental results,and these values are added to the equation of *** a result,the energy loss is contained in the final numerical model the by united simulation *** the developed numerical model,the optimal period of energy capture is *** power capture reaches the maximum value under the outer buoy's natural *** paper gives the peak value of the energy capture under the linear PTO damping force,and calculates the optimal mass ratio of the device.

关键词： coaxial double-buoy wave energy converter physical model experiment numerical simulation hydrodynamic performance

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维普期刊数据库

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