Blade Element Calculation Method Based on Blade Element Momentum (BEM) Theory

The Blade Element Calculation Method is grounded in Blade Element Momentum (BEM) theory, which enables computational determination of axial induction factors across the wind turbine's rotational plane. Wind turbine rotors typically comprise dozens to hundreds of blades, where rotor design and optimization critically impact power generation efficiency. Precise computational modeling is essential for enhancing rotor performance. The blade element method operates by calculating force and moment distributions for individual blade segments through iterative algorithms that combine momentum balance equations with airfoil characteristic data. This segmented approach allows for accurate performance prediction by incorporating local inflow conditions, tip loss corrections, and stall delay models. Consequently, this methodology is extensively implemented in wind turbine design optimization workflows, often programmed using matrix-based computations for simultaneous solution of induction factors and aerodynamic forces across multiple radial stations.