Nonlinear Aeroelastic Analysis of 3D a MW-Class Wind Turbine Blade Using CFD and CMBD Coupling Method

• Published in: Proceedings of the 10th International Conference 2009-10, Vol.1225, p.852-863
• Main Authors: Kim, Dong-Man, Kim, Dong-Hyun, Kim, Yo-Han, Park, Kang-Kyun, Kim, Su-Hyun
• Format: Article
• Language: English
• Subjects: Aeroelasticity; Blades; Computation; Computational fluid dynamics; Computing time; Dynamic tests; Dynamics; Finite element method; Fluid flow; Fluid-structure interaction; Fluids; Joining; Mathematical analysis; Mathematical models; Navier-Stokes equations; Nonlinear dynamics; Nonlinearity; Rotating; Shape; Three dimensional; Time marching; Turbine blades; Turbulence; Turbulence models; Turbulent flow; Unsteady; Unsteady flow; Wind turbines
• ISSN: 0094-243X

In this study, aeroelastic response analyses have been conducted for a 3D MW-Class wind turbine blade model. The complex composite laminated blade rotates in the unsteady fluid. Advanced computational fluid dynamics (CFD) and computational multi-body dynamics (CMBD) coupling method has been developed in order to investigate aeroelastic responses of the rotating composite blade in unsteady fluid. Reynolds-Averaged Navier-Stokes (RANS) equations with k-E turbulence model were solved for unsteady flow problems of the rotating turbine blade model, and modal analyses of rotating wind-turbine blade have been conducted by using the general nonlinear finite element program. A fully implicit time marching scheme based on the Newmark direct integration method is used for computing the coupled aeroelastic governing equations of the 3D turbine blade for fluid-structure interaction (FSI) problems. Detailed dynamic responses and instantaneous velocity contour on the blade surfaces which considering flow-separation effects were presented to show the multi-physical phenomenon of the huge rotating wind-turbine blade model.