Motion Response Analysis Of Jacket Platform Integrated With OWC Device

With the development of China's society,the demand for energy continues to increase,and the reserves of conventional petrochemical energy such as coal and oil continue to decrease,and the energy crisis continues to increase.At the same time,environmental pollution and environmental protection pressures have gradually increased.In recent years,the smoggy weather in our country has increased,indicating the importance of developing clean energy.The ocean,which accounts for 70% of the Earth's surface area,contains abundant clean energy-wave energy,if properly utilized,can be converted into electricity.Integrating the wave energy power generation device into jacket platform can convert the clean energy wave energy into electric energy,provide power for the normal operation of the platform or the production and life of the residents in the coastal areas,improve the economic benefits of oil exploitation,and alleviate the current situation of energy shortage.It has practical significance;reducing the consumption of petrochemical energy can also improve the current environmental conditions to a certain extent.This paper innovatively proposes a concept of integrated wave energy generation device for jacket platform.Considering the combined action of wind,wave and flow,the motion response of whole structure is studied and analyzed,and compared with the motion response of offshore platform without OWC device.Analyzing and exploring of the feasibility of integrating wave energy generating device on the jacket platform.Firstly,the design method of device is proposed,and the ANSYS finite element model is established based on the relevant data of Jinzhou JZ-20 jacket offshore platform.The calculation of wind load,wave load and current load is carried out,and the calculation method of structural motion response is clarified.Then,using the optimization function model to explore optimal structural parameters of the Oscillating Water Column(OWC)wave energy conversion device,the wave force of OWC device is obtained by giving a series of device drafts and chamber radius values.And its wave energy conversion efficiency coefficient,based on the optimized objective function of the structure,obtains the optimal structural parameters of OWC device with the least force and the highest wave energy conversion efficiency.Finally,the OWC device with optimal structural parameters is integrated into the jacket platform,and the motion response calculation under different load conditions is carried out,and the motion response of jacket platform without integrated OWC device is compared and analyzed.The study found that the motion response of the integrated OWC wave energy generator in the jacket platform meets the engineering requirements,both under regular wave and irregular wave conditions,considering the wind and current loads.It shows that the integrated device concept has certain feasibility.