Blade Design And Performance Analysis Of Model Level Tidal Current Energy Turbine

Twenty-first Centuries is the century of the ocean. In recent years, China has increased the development of power flow energy, so the energy conversion device to put forward new requirements. In this paper on the basis of the wind turbine blade design method, using BEM, computational fluid dynamics and experiment method, the optimization design, water dynamics research and model test research for hydraulic turbine blade of our country seawater flow rate range are carried out.In this paper, starting point is the 20w model-level hydraulic turbine design, firstly, from the existing research, summarized domestic and overseas tidal current energy utilization situation, and the research general situation of hydraulic turbine, summarized the hydraulic turbine blade design and performance analysis method, brought forward research content, made technical route, and introduced the basic theory of design of the blade and the blade performance analysis. According to the airfoil theory, the performance analysis of the selected airfoil is performed by means of Qblade software, and the performance of the designed airfoil is determined; According to the theory of blade optimum design, the design of 20W hydraulic turbine blade is designed. Based on the blade element momentum theory, the preliminary performance analysis is carried out. With the help of MATLAB software, the blade optimization, the performance of the optimized blade is analyzed by using the momentum theory of leaf element, and verified the optimization results. Using CFD method, the performance of the blade is studied by means of NUMECA 3D numerical simulation software, the effect of environmental factors on the performance of the hydraulic turbine is analyzed, In order to enhance the power of turbine, installed the diversion cover. Through the finite element method, modal analysis was carried out on the blade. Ensure that the hydraulic turbine can operate normally. In addition, build a hydraulic turbine test platform; related experiments were carried out on the influence factors of the performance of the hydraulic turbine. The correctness of the blade design and the predictability of the CFD numerical simulation are verified by the experimental data.