Wind energy conversion. Volume X. Aeroelastic stability of wind turbine rotor blades
The nonlinear equations of motion of a general wind turbine rotor blade are derived from first principles. The twisted, tapered blade may be preconed out of the plane of rotation, and its root may be offset from the axis of rotation by a small amount. The aerodynamic center, center of mass, shear center, and area centroid are distinct in this derivation. The equations are applicable to studies of forced response or of aeroelastic flutter, however, neither gravity forcing, nor wind shear and gust forcing are included. The equations derived are applied to study the aeroelastic stability of the NASA-ERDA 100 kW wind turbine, and solved using the Galerkin method. The numerical results are used in conjunction with a mathematical comparison to prove the validity of an equivalent hinge model developed by the Wind Energy Conversion Project at the Massachusetts Institute of Technology.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Aeroelastic and Structures Research Lab.
- OSTI ID:
- 5477167
- Report Number(s):
- COO-4131-T1(Vol.10)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aeroelastic analysis of the Darrieus wind turbine
Simplified aeroelastic modeling of horizontal-axis wind turbines