Wind Turbine Three Dimensional Modeling And Analysis

With the development of economy all over the world, the problem of short of energy is increasingly outstanding. The wind energy is a kind of clean renewable energy, free from pollution. The proportion of the wind energy to the other energy is more and more biger in use currently. At the same time because the advantage of the wind energy, such as free from pollution, nearly exhaustless, more and more nations and regions throw in the research and the industry construction of the wind power. The industry of the wind energy develops to a certain scale in China last few years, but China gets behind the international community concerning the technical research of wind power, especially the key technique of the wind turbine. The blades, the key part of the wind turbine, are studied in this article.First of all, the mathematics model is abstracted from the mathematics model of flow around the surroundings of blades. Then the flow field around the surroundings of blades is analyzed using the method of the Finite Volume Method. The simulation and calculation is carried on using the general fluid software Fluent. The velocity profile and pressure distribution are acquired, and some important fluxion phenomenon is obtained. Some important conclusions, such as movement of some work conditions under the circumstances of cut-in wind speed,rated wind speed and extreme wind speed. Verify the stall phenomenon that the blade produces when being too big because of angle of attack, are verified. The results of simulation are analyzed thoroughly. Some worthy information is provided for the design of blade. Some reference for the further research is offered at the same time.Secondly the three dimensional model of the wind power generator is established using UNIGRAPHICS NX 3. Receive the simulation operation of strength to the blade especially, calculate displacement of typical operating mode separately, strength, stress, meets an emergency and reacting force, and calculates the displacement. Find out the law of distributing. The results are analyzed combined with the actual work circumstance of the wind turbine. Some deficiency pointed in the current design work, which lay the foundation for the further design and optimization. This article can also guide the actual application.