Design of a 200kW Wind Turbine Blade Based on Wilson Theory with Aerodynamic Optimization

Wilson theory serves as a classical aerodynamic design methodology for wind turbine blades, particularly suitable for small-to-medium-scale turbine development. For a 200kW mid-power wind turbine, applying Wilson theory for blade design achieves an optimal balance among efficiency, structural strength, and cost considerations.

In the 200kW blade design process, Wilson theory implementation involves several key aspects: First, the momentum blade element theory is applied to calculate chord length and twist angle distributions along the blade span, ensuring each cross-section achieves peak efficiency at corresponding wind speeds. This typically requires iterative computational algorithms to solve lift and drag equations across discrete blade segments. Second, aerodynamic shape optimization integrates lift coefficient (Cl) and drag coefficient (Cd) curves, where polynomial fitting functions or lookup tables from airfoil databases are implemented in design codes to model performance characteristics. Special attention is given to Reynolds number ranges specific to 200kW power class turbines, with numerical methods adjusting aerodynamic properties based on local flow conditions.

200kW turbine blades are typically manufactured using glass fiber composite materials, requiring structural strength-to-weight balance in design. Wilson theory provides load distribution calculation methods that enable engineers to determine aerodynamic loads on different blade element sections through integrated force calculation algorithms. These computational models output pressure distributions and bending moments used as inputs for finite element analysis (FEA). Concurrently, with advancements in computational fluid dynamics (CFD), Wilson theory results are validated and refined through CFD simulations, where meshing algorithms and Navier-Stokes solvers verify flow separation behavior and power performance predictions.