Optimal Design Of Spiral Wind Turbine Based On Structure Improvement Device

Provided to humanity by airflow doing work,wind energy is a renewable energy,inexhaustible in supply and friendly to the environment.The development of wind power has been written into China’s 13th Five-Year Plan.Although the study of HAWT is more common,the vertical axis wind turbine attracts attention of more and more scholars,with its unique advantages,such as lower noise,simple structure,high adaptation to wind and so on.Increasing the wind power efficiency of vertical axis wind turbines has become the focus of research.In this paper,the influence on the aerodynamic performance of increasing the blade tip vane is analyzed,using the CFD technology,with spiral vertical axis wind turbine as research object,and the characteristics of tip vane to improve the wind power efficiency are obtained.First of all,the basic theory and the aerodynamic teory of wind turbine are introduced,laying a theoretical foundation for the subsequent numerical simulation.Secondly,the three-dimensional models of tip vane and spiral wind turbine are constructed,and the comparison,between wind turbines with or without tip vane,under different working conditions,is carried out to study the trend of wind power efficiency,and pressure field.Finally,on the principle of singal factor experimental study,the wind turbines with different parameters of tip vanes are compared to determine the optimal parameters of the vane.This paper provides an effective reference method for studying the effect of adding tip vane on the aerodynamic performance of spiral vertical axis wind turbine.The obtained results have important reference value and practical engineering significance for the design of the blade with tip vane and the study of practical application of blade tip wing.