The Aerodynamic Configuration Design And Numerical Simulation For Horizontal-Axis Wind Turbine Blade

Facing with growing energy needs and environmental pressures, the countries of the world areincreasing their efforts to develop new energy sources. Clean non-polluting, green and cheaprenewable energy is the focus of energy development in the world today. development．Wind energyis the most representational energy in clean reproducible energy, it has important signification of theenvironment protection and ecosystems balance，it can reduce the depend on the conventional sourceof energy and improve the energy structure. The focus of the wind energy development is to convertwind energy into electricity, The horizontal axis wind turbine is the most important form of Windenergy utilization, blade is the key component of the wind turbine. Blade design directly determinethe level of the efficiency of the wind turbine, from this, The aerodynamic design of wind turbineblade became the most important topic for study.First, this paper, analysis of domestic and international wind power development status andwind wings research, make a detailed introduction to the aerodynamic design method of windturbine blades which includes Glauert, Schmitz, momentum-element theory, then Analysis of thedifference.Secondly, Based on the existing wake vortex model, this paper puts forward a cone-cylinderwake vortex, determines the wake vortex radius on the basis of continuity equations of fluid.Then, base on the limited number of blades, mutative circulation and expanded vortexaerodynamic model，this paper improves Glauert theory and puts forward a new method ofdesigning the aerodynamic configuration of horizontal-axis wind turbine blade by solving theintegral differential equations which describe the model. Then the optimum design of a1.5MWwind turbine is given as an example and the calculation results are compared with other results todemonstrate the effectiveness of the new method.Finally, According to the design results, model the blade three-dimensional solid modeling,appoint the type of boundaries and mesh, then using fluent software for the new wind turbine designfor numerical analysis.