Services to OEMs

We help OEMs enhance aeroelastic designs to mitigate stall- and vortex-induced vibrations, fully aligned with international standards and industry best practices. We also support the design and evaluation of new technologies.

Aero-elastic analysis and design of wind turbine systems

  • Load calculations for onshore and offshore (bottom-fixed and floating) WTGs, in accordance with IEC standards.
  • Aeroelastic stability analysis focusing on stall-induced vibrations (SIV) and identification of low or negatively damped modes under parked/idling and assembly/maintenance conditions
  • Vortex-induced vibration (VIV) analysis of the entire wind turbine configuration, including vortex shedding from the tower and blade for first and second modeshapes
  • Definition of optimal pitch settings for installation and parked/idling conditions
  • Proposal of minor design modifications to the blade internal structure to improve aeroelastic stability performance
  • R&D for new technology development and assessment

Numerical blade modal test

A novel framework to estimate the structural damping of composite structures such as blades, based on laminate properties.
  • Combination of a FEM solver with fully populated stiffness and damping matrices with a cross-sectional tool
  • Estimation of blade mode shapes and structural damping ratios
  • Account for an-isotropic material coupling effects, such as the ply angle offset of UD material on the spar cap

Aerodynamic analysis & design

Airfoil and rotor aerodynamic design
These services primarily address large multi-megawatt onshore and offshore designs with non-conventional specific power characteristics:
  • Optimum design of dedicated high- and low-lift airfoil families tailored to specific Reynolds and Mach number regimes
  • Shape optimization of wind turbine blades to reduce the cost of energy

 Airfoil and rotor aerodynamic analysis
All aerodynamic simulations are carried out with an in-house CFD solver, including:
  • Calculation of 2D and 2 1⁄2 D airfoil polars, including 3D and rotational effects
  • Aerodynamic analysis of flow-control devices such as vortex generators and moving flaps
  • Fully 3D rotor aerodynamics analysis with emphasis on turbine performance and loads