RECENT NUMERICAL AND EXPERIMENTAL INVESTIGATION ON FLUTTER STABILITY OF LARGE-SCALE WIND TURBINE BLADES

Motivated by the problem of comprehensive stochastic analysis and quantitative risk evaluation associated with classical flutter of large-scale wind turbine blades, the authors proposed and developed an efficient analysis framework, comprising modeling, simulation, and experiments, to examine classical flutter of large-scale wind turbine blades, accounting for several uncertainty sources. Novel aerodynamic and probabilistic theories are employed. A benchmark blade model, the National Renewable Energy Laboratory (NREL) 5MW blade, is used for verification and as an application example of the proposed framework. Numerical and experimental results are presented and discussed to demonstrate the successful application of the proposed framework to evaluate wind turbine blade flutter.