Flow Field Numerical Simulation Of Windmill Blade Based On Magnus Effect

As the stress of oil source scarcity and deterioration of urban environment become more and more severe, Development of renewable green energy has become the inevitable direction of the future national energy strategy. As a form of renewable energy, wind power generation is not only clean non-polluting, but also one of the most mature and the largest of the power generation technology in renewable energy and has been welcomed and valued around the world. Currently, the wind generator is the main form of using wind energy, and the blade is the most critical parts of wind generator. Blade design will determine the success of wind generator design. However, the blade research started relatively late in China, and do not have the strength of independent research and development. At the same time, the developed countries chronically blockade the blade technology for monopoly of technology-based. Therefore, the research in our country is necessary.In this paper, a new wind blade configuration based on Magnus Effect is proposed, and the related research of Magnus blade is done in the mechanical model of the blade, the aerodynamic performance of the airfoil profile and the impeller.Firstly aerodynamic model of the blade is derived using the basic theory of blade design and blade element theory, the Betz model, the Bernoulli's equation, and momentum theory.The 2-D numerical simulation of the airfoil is completed in the Fluent, and using the Matlab, the aerodynamic performance of airfoil is obtained by data processing of the discrete performance parameters on the blade airfoil, then the performance characteristics of Magnus airfoil is compared with the tradition.Then 3-D dynamic numerical simulation of the operation of the blade is used to analyze the movement of blade and flow details of the situation in the flow field, preparing for further improving performance, and the law between various structural parameters of blade and aerodynamic properties of blade is obtained by orthogonal experiments, using visual and variance analysis. Performance parameters and force of the blade based on Magnus is compared with the traditional blade, the Magnus blade shows the bright future.Finally, according to the characteristics of structure and performance of Magnus blade, the relevant experimental device is designed and optimized. Then the strength and stiffness of important components are checked, meeting the actual demand. The prototype lays a solid foundation for the further development of Magnus leaves.This research work and results has theoretical value to further study of aerodynamic characteristics of airfoil; It also has a great significance to new wind turbine blade research and development.