Aeroelastic
Models
Aeroelastic Modeling of Wind Turbines through Reverse Engineering
At Nabla Wind Hub, we develop high-fidelity aeroelastic models through reverse engineering, reconstructing the actual structural behavior of wind turbines from geometric, operational, and monitoring data, in compliance with IEC 61400-28.
This approach enables accurate capture of aerodynamic–structural interaction and reduces uncertainties compared to purely theoretical models, providing a robust foundation for extreme and fatigue load simulations, validation of technical modifications, retrofit analyses, and life extension programs (P70 / P80 / P90).
The same approach is particularly relevant in repowering processes, where we assess structural compatibility, tower and foundation reuse, and the impact of load increases, as well as in pre-construction studies and technical due diligence, through type–site comparisons and preliminary verification of structural margins and regulatory compliance.
In this way, aeroelastic modeling based on real data becomes a strategic tool to optimize technical and financial decision-making throughout the entire asset lifecycle, both onshore and offshore.
Through a proprietary methodology, we combine:
to build aeroelastic models that accurately replicate the dynamic and structural behavior of the wind turbine.
Reverse Engineering
Applied to Wind Turbines and Large Components
At Nabla Wind Hub, we have extensive experience in the development of validated aeroelastic models, with more than 90 models built for different technologies and manufacturers, primarily in the onshore sector. Our reverse engineering approach enables high-fidelity reconstruction of the structural and dynamic behavior of both the full wind turbine and its major components (blades, tower, and foundation), even in the absence of detailed OEM documentation.
This capability allows us to generate robust digital models for life extension projects, advanced load simulations, validation of technical modifications, repowering, and optimization of operational strategies, providing a solid technical foundation for decision-making in both operating assets and technical evaluation or pre-construction phases.
Eder Murga
Head of Operations
Aeroelastic Model Development
Our process follows a structured methodology
consisting of four main stages:
Data acquisition and geometric model development
We conduct field campaigns to capture the actual geometry of the wind turbine through:
- 3D laser scanning of the turbine’s external surface.
- Internal ultrasonic measurements.
- Analysis of historical SCADA system data.
These data are integrated into a detailed 3D geometric model that serves as the foundation for aerodynamic and structural modeling.
Aerodynamic model creation
Using our proprietary database of airfoil profiles and wind tunnel testing, we develop a high-precision aerodynamic model.
This model includes:
- Aerodynamic performance parameters for each airfoil profile.
- Application of three-dimensional corrections (rotation, Mach number, Reynolds number).
- Simulation of the dynamic behavior of the blades and rotor.
Structural and mass modeling
All key components are structurally sized, faithfully reproducing:
- Linear mass distributions.
- Structural stiffnesses.
- Natural frequencies (eigenfrequencies).
The model can be adapted to the actual conditions of the wind farm, incorporating manufacturing tolerances such as overweight blades or mass asymmetries. The following are modeled:
- Blades and internal substructures.
- Hub and main structure.
- Drive train.
- Tower.
- Foundation.
Aeroelastic model validation
Validation is carried out through three main approaches:
- Analysis of dynamic structural responses.
- Comparison of controller statistics.
- Validation of the dynamic power curve.
modelo geométrico 3D
Applications of Our Aeroelastic Models:
Wind turbine life extension studies.
Technology acquisition support studies.
Validation of updated or modified control systems.
Dynamic behavior studies under new wind farm configurations.
Technical support for redesign or retrofit integration.
Load analysis and simulations under real operating conditions.
Reconstructing the structural and dynamic behavior of wind turbines through aeroelastic models and advanced structural analysis enables precise understanding of how assets operate under real conditions. This capability provides a solid technical foundation to evaluate modifications, optimize operational strategies, and support decisions related to life extension and repowering.
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