An efficient blade sweep correction model for blade element momentum theory

This article proposes an efficient correction model that enables the extension of blade element momentum method (BEM) for swept blades. Standard BEM algorithms, assuming a straight in rotor plane, cannot account changes induction system introduced by sweep. The proposed corrects axial regarding two aspects: azimuthal displacement trailed vorticity and curved bound vortex on itself. extended algorithm requires little additional processing work maintains BEM's streamtube independent approach. is applied to simulations geometries based IEA 15 MW reference wind turbine. Results show good agreement with lifting line inherently can geometry. Blade sweep couples bending torsion deformations curving axis inplane direction. As such, it be used passively alleviate loads and, thus, aeroelastically tailor turbine implementation aeroelastic tailoring techniques, analysis general, becomes increasingly significant size rotors continually rising. Due its low computing complexity, remains crucial tool aerodynamic rotors. Thus, contributes fast accurate evaluation designs.