Brussels Wind Energy Research Institute is joining the efforts of several research groups active in the field of wind energy. Its research program covers several aspects of modern wind turbine technology.
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2. Wind Topics @ BruWind Research Groups
Noise & Vibration
Research group: Acoustics and Vibration AVRG
Topics: Operational Modal Parameter Estimation, Load and Source
Identification,
Structural Health Monitoring, Advanced measurement
techniques
Strength & Materials
Research group: Mechanics of Materials and Constructions
MEMC
Topics: Composite materials, Biaxial Material Behavior,
Subcomponent testing
Aerodynamics and Aeroelastics
Research group: Fluid Mechanics & Thermodynamics FTRG
Topics: CFD simulation over complex terrains, Wind Farm
Optimization
Simulation of individual wind turbines
Research group: Industrile Wetenschappen en Technologie
IWT
Topics: Siting studies en wind resource assessment using CFD
and wind measurements
Sensors and measurement techniques
Research group: Electrochemical and Surface Engineering
SURF
Topics: Corrosion management Corrosion sensors
Research group: Vakgroep Toegepaste Natuurkunde & Fotonica
- TONA
Topics: Optical Fiber Sensors
3. Wind Topics @ BruWind Research Groups Generator, Power
Electronics, Grid Integration Research group : Electrical
Engineering and Power Electronics ETEC Topics: Monitoring, Grid
intergration Control Systems and Automation Research group : MECH
Topics: Controle algorithms Environmental Issues Research group :
Acoustics and Vibration AVRG Topics: Noise Pollution Trading
Energy, Wind energy Economics Research group : Bedrijfseconomie en
strategisch beleid - BEDR Topics: Wind energy Economics
4. AVRG Research Dynamic Behavior of Wind Turbines
Operational Modal Parameter Identification
GOAL S:
Development of OMA techniques using transmissibility
measurements
Development of Operational Modal Analysis with Exogenous
inputs
Development of OMA solutions for non white-noise excitations
and harmonics 1P, 3P, ..
Project: Operational Modal Analysis using transmissibility
measurements (FWO Christof Devriendt)
Transmissibility Function is a ratio between 2 responses measured
during a certain loading condition
5. AVRG Research Load and Source Identification
Load and Source Identification
GOALS :
Identifying time-varying wind loads on structures from in situ
vibration response data using inverse methods
Identifying acoustic sources on structures from in situ
pressure data using inverse methods
Project : Inverse identification of wind loads on structures
(FWO project ism KULeuven)
{Q} {P} [H] -1 {Q} [H]
6.
Structural Health Monitoring of Wind Turbines
GOALS :
Acquiring and testing state of the art monitoring systems e.g.
fiber optic sensors
Development of advanced data processing techniques
SHM of blades, towers and foundations using OMA and
Transmissibility measurements
Project : Offshore Wind Infrastructure Project (IWT project ism
Sirris)
AVRG Research Structural Health Monitoring The development of an
algorithm for structural health monitoring during changing
operational forces using distributed sensor networks
transmissibility functions as primary data
7. AVRG Research Advanced measurement techniques Non-contact
measurement, visualization and analysis of structural vibrations In
combination with Modal Analysis software a strong tool to determine
the resonate frequencies, damping factors and mode shapes Potential
in the fields of modal analysis testing and structural health
monitoring of wind turbines Long distant LDV can measure up to a
distant of 200m Long distant LDV
8. CFD Simulations over Complex Terrains FTRG Research CFD
simulations over complex terrains
Wind Flow over complex terrains
New Meshing Strategies (unstructured grids)
CFD is used to predict the wind over complex terrains
9. CFD Simulations over Complex Terrains FTRG Research Wind
Farm Optimization Wind Farm Layout optimization Wind Farm Control
optimization
Work together with Von Karman Institute
Optimization based on
CFD simulations (COOLFluiD)
Wind turbines modeled using actuator disk
Neural networks
Genetic algorithms
Robust optimization using non-deterministic methods
Two optimizations are considered
Wind farm layout: positioning of wind turbines in the farm
Wind farm control: power setting of individual turbines for max
wind farm production
NOT acceptable layout Acceptable layout
10. CFD Simulations over Complex Terrains FTRG Research
Simulation of individual wind turbines
Full 3D CFD simulations of individual wind turbines
prediction of power curve
optimization of blades for improved efficiency
RANS or LES modeling
Simulation of NREL windturbine: V=7m/s; Re=4E6 Massive separations
near blade root Streamlines of the flow on the blade
11. MEMC Research in the field of Wind Biaxial Material
Behavior => Experimental data needed In-plane loading of
cruciform specimen Biaxial behavior in e.g. wind tubine blade
Biaxial test method at MeMC Cruciform specimen design Glassfibre
reinforced epoxy material Layup frequently used for wind turbine
blades (LM Glassfibre)
12. MEMC Research in the field of Wind Subcomponent testing
Tests at the moment : small coupon tests or real blade tests Aim =
tests at mid-scale => subcomponent tests 4-point bending and
cantilever tests on I-beams to test bonding in real blade Acoustics
& Vibration Research Group Vrije Universiteit Brussel C.
Ramault 1 , A. Makris 1 , D. Van Hemelrijck 1 , E. Lamkanfi 2 , W.
Van Paepegem 2 Optimat Blades Project & Upwind Project sandwich
Blade root Flanges, web, bondlines
13. SURF Research Corrosion management Corrosion management, by
Potential model (distribution), together with Elsyca (SURF
Spin-off)
Including cathodic protection (CP) predictions
Possibility to integrate specific corrosion effects (local
corrosion, galvanic coupling)
Influence of liquid film on structure
Influence of evolving splash zone
Sensor to detect and quantify corrosion taking place on
structure
Continuous and in-line monitoring (condition monitoring)
Can be coupled with CP to reduce CP cost
Used to schedule repainting / repair cycles
Can cover specific targets or general structure
Prototype prediction validation
14. SURF Research Corrosion sensors
Based on EIS (Electrochemical Impedance Spectroscopy)
interpretation step eliminated
SOIB (Spin-Off in Brussels) project started in 2009
goal to establish spin-off to produce / distribute a corrosion
sensor in 2013
Strong points:
In-line
On the structure itself
Robust algorithm
Continuous monitoring
Sensitivity
No interpretation (simplicity)
Versatility
Detects corrosion, not the secondary effects
15. TONA RESEARCH Microstructured optical fiber sensors
Microstructured optical fiber sensors successfully embedded in
carbon-fiber reinforced polymer
We achieved
Highly improved transverse load sensitivity
Insensitivity to temperature
Industrially relevant sensor performance for CFRPs
Transversal load sensitivity of our sensor is 10x larger than in
state-of-the-art fibers
16. EhB Research Wind Energy Micro-siting
Determine optimal location for turbine(s) on given site
Especially complex terrain, incl. (semi-)built environment
? ? ? ? ?
17. EhB Research Wind Energy Micro-siting
CFD: Mainly OpenFOAM
Site geometry from google earth, geographical data, + total
station measurements
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Wind measurements 2D cup and 3D ultrasonic
Combined with historical wind data, power curves of wind
turbines resource assessment
EhB Research Wind Energy Micro-siting
19. EhB Research Wind Energy Aero-elasticity
Modal analysis
FSI, frequency lock-in
Flutter prediction methods
20. EhB Research Wind Energy Flow control
Load alleviation through smart blades (flaps, micro-tabs,
vortex generators, ...)
CFD and experimental
21. Ongoing Projects in the field of Wind
Project: Offshore Wind Infrastrcutere Project Wind (IWT project
ism Sirris)