Already in 1971, Wölfel was one of the first engineering companies in Germany offering computer-oriented calculations for industrial customers. Due to our many years of experience we can analyze even highly complex structures or the interaction of vibrations and sound emissions. Depending on the problem, numerical analysis FE-solvers (e. g. Abaqus) or MBS-software (e. g. Simpack) can be used.
Wind Turbine Modelling and Analysis
Finite element analysis and multi-body simulation
We are able to evaluate your entire wind turbine
- Complete system analysis with different levels of fidelity
- Detailed component analysis
- Strain, stress and fatigue analysis
- Fully parameterized models result in high efficiency
- Highly non-linear model behavior for realistic results
Wind Turbine Model – Structural components
- Rotor Blades
More components such as flexible bedplate and generator can be added for highly detailed analysis.
Nacelle & Gearbox Sub-Models
Flexible or rigid bodies
- Rigid body: fully parameterized
- Flexible body: gears and shafts
Different levels of fidelity
- Basic: constant stiffnes
- Advanced: individual tooth contact
Any components of the sub-models can be modelled in finite-element software for higher fidelity.
- Eigenfrequencies and eigenmodes
- 2D campbell diagram
- 3D campbell diagram
The analysis provides a more component-wise insight into the gearbox.
- Finite element beam: fully parameterized
- More complex geometries can be created in Abaqus
Model as a substructure
- Model may be used in different wind turbine models
- Model may have additional point masses for fine adjustment
The tower can be either rigid or flexible body, depending on the required fidelity level. Offshore towers can also be modelled.
Rotor Blade Sub-Model
There are two simplified approaches to implement rotor blades in Simpack:
- Basic format: bending and geometric stiffening are considered
- Advanced format: coupling effects between bending and torsion are also considered
Detailed approaches for idealizing rotor blades can be considered via sub-models generated e. g. in the FE-solver Abaqus.
Rotor Blade Aerodynamics
- Third party module AeroDyn from the US National Renewable Energy Laboratory (NREL) is used to produce the resultant aerodynamic forces on the blades.
- Both upwind and downwind turbines can be simulated.
- The model can also be used in controller design for rotor speed, power output and so on.
Certified third party module “AeroDyn” is a build-in function in Simpack for blade aerodynamic analysis.