Design Of High Efficiency Recycling And Utilization Device For Low Current Oceanic Energy

With the development and utilization of marine resources,a trend that will become following the solar,wind and a new type of clean energy.At present,because of the cost,reliability,energy conversion efficiency and other factors constraints,global current research mostly in the experimental stage,in which power flow can be sent to the high cost of electricity is the biggest reason to hinder the commercialization,so for every kind of tidal current energy conversion device,can improve the energy capture the conversion efficiency the best reduction ratio,reduce the cost of power generation,become the development potential of the key.Starting from the concept of modular units,this paper in-depth analysis of the trend of energy to electric energy conversion mechanism,design a low tide,recovery and utilization device.Through the application of computer finite element simulation technology,establish a model for the relationship between the blade angle and energy harvesting efficiency,model for the relationship between incident box and the inclination of the effective velocity,in 3D inside the flow simulation and physical phenomena occurring within the flow field and the law of motion,a comprehensive analysis of the iterative curve,pressure distribution,velocity and flow path.And through altering the energy capturing the slope of the blade mechanism and the angle of incidence is box,the optimal parameters range,for the device Provide theoretical basis and technical guidance for the design and manufacture.Firstly on belt pulley to movable vane type new low flow device based on model establishment and theory study.By using UG NX8.5 3D modeling technology of the principle of the model and the advantages and disadvantages analysis,and the blade swing angle and the trend to collect efficiency model and a box body structure of the incident angle and the trend growth rate relationship model research,proposed tidal current energy to electric energy conversion theory.Then the computational fluid dynamics(CFD)the theoretical basis and ANSYS fluent finite element simulation technology of key parameters.Through analysis of the fluid flow of the basic conditions and computational fluid dynamics(CFD)regional discretization concept of fluid type were determined.And ANSYS fluent finite elementnumerical simulation of the basic control equations,turbulence model,boundary conditions,etc.the key parameters research,proposed the use of finite element numerical simulation based on the flow field of the RNG K-turbulence model on tidal current energy device.Next,using the ANSYS ICEM CFD mesh generation software and ANSYS fluent finite element analysis software of low flow device can arrest mechanism blade model and the incident box model to carry on a thorough research.By finite element analysis software ANSYS fluent flow field simulation environment,that can capture mechanism blade and incident case iterative curve diagram,the pressure contours,flow velocity vector diagram and flow trajectories,then can capture vane mechanism by flow velocity distribution on the stress state and the incident case of comprehensive analysis.Lastly optimization of key structure parameters of the device were researched respectively.For catching mechanism leaves at 5 degrees,15 degrees,25 degrees,35 degrees,45 degrees of relationship model and the incident box at 15 degrees,25 degrees,35 degrees model of the relationship between flow simulation,concludes that the blade pressure distribution varying with the angle of the blade,fluid velocity distribution changes with the angle of the box,then the analysis of the blade pendulum angle and the body of the angle of incidence of the optimal parameter range.Finally,the new low power generation equipment is tested.By simulating and testing the key parts of the device and the whole equipment,the mathematical model of energy conversion efficiency is established,and the relationship between the parameters and the energy conversion efficiency is analyzed,and the optimal parameters are obtained.It provides some reference and reference for the design of low tidal current oceanic energy recovery and utilization device.