The Modeling And Simulation Of Blades Of A Horizontal Shaft Wind Turbine

As a renewable energy, wind power has the advantages of clean and pollution-free, and as a wayof using wind power,the wind power generation is one of the ways of the most promising powergeneration in the field of the energy in addition to the technology of hydroelectric power. Comparedwith other power generation methods, wind power generation has relatively low cost andcharacteristic of large-scale development and low threshold, developing rapidly in all over the world.The development of wind power generation has very important significance in reducingenvironmental pollution, solving the energy crisis, djusting the energy structure.This paper takes wind turbine blades as the research object, through the research and discussionof the wind turbine blade, we can get dynamic characteristic of wind turbine blades under externalcomplex load, it provides some references of design and optimization of the wind turbine unit.First of all, the paper summarize the structure and working principle of wind machine, there ispneumatic analysis to the blade according to the theory of Bates, momentum theory, evvh-momentum theory.Secondly, according to the current wind turbine blade model, using NACA4412profile, the discrete points can be got through profile coordinate transformation in Matlab andimported to proE to create model.Again, mesh the imported blade using finite element softwareANSYS and make modal and static analysis, getting natural frequency, vibration mode, stress andstrain nephogram of the blade. It provides a reference for production and research of blade andprovides theoretical basis for improving the service life of blade avoiding resonance.Finally, simulatethe flow field around the blade using the software Fluent and calculate results of stress.It laid a certainfoundation of aerodynamic analysis for blades for the future.