Hydrodynamic Performance Of Tidal Current Energy Power Plant Carrier

Since the21st century, with the development of the world economy and society, energy forsustainable development and environmental protection has become a serious problem.Ocean current energy is a kind of clean renewable energy with huge reserves. Powergeneration technology research began in the1970s. Nowadays, there are several modelrunning tidal current stations have been built in the world which have several basic forms,which are floating structures, suspended structures, and sit seabed structures.This thesis is come from the National Natural Science Foundation Project“design themooring system of tidal current energy power plant influenced by turbine”.A twin hull platform carried with the Vertical-axis turbine is designed in the paper, byresearch on its hydrodynamic performance, make sure the mooring system should satisfiesthe service equirment of tidal current turbine and survives in extreme sea conditions.The main work of the paper includes the following aspects.First of all, studies the tidal current energy development in the introduction part, thenproposes a design about a twin hull platform carried with the Vertical-axis turbine.Secondly, based on momentum theory and single-multiple streamtube model, by using of alarge numerical calculation software Ansys Fluent turbine is analyzed in numericalsimulation, analyse the load of the spindle of the turbine which the tidal current energypower plant is in the general sea conditions or extreme sea conditions.Thirdly, adopts the three-dimensional potential theory, the coupling movement of tidalcurrent energy power plant carrier due to wind, wave and current is investigated and thehydrodynamic coefficients are calculated numerically by using the DNV SESAM software.Finally, it is design and verification of the mooring system, according to the hydrodynamiccoefficients calculated numerically by HydroD and the load of the spindle of the turbinefrom Ansys Fluent, coupling analysis the tidal current energy power plant carrier and themooring system by DeepC.