Simulation im Bereich der Windenergie ein Überblick · Customer Feedback in ANSYS Composite...
Transcript of Simulation im Bereich der Windenergie ein Überblick · Customer Feedback in ANSYS Composite...
Simulation im Bereich der Windenergie –
ein Überblick
Dipl.-Ing. (FH) Nathalie Mattwich, CADFEM GmbH
Dipl.-Phys. oec Stephan Hecht, ANSYS Germany GmbH
Agenda
Uhrzeit Thema Referent
16:00 – 16:30 Simulation im Bereich der
Windenergie – ein Überblick
N. Mattwich, CADFEM
S. Hecht, ANSYS
16:30 – 17:00 Wirbelstromverlust- und
Temperaturberechnung für einen
permanenterregten
Windkraftgenerator
N. Götschmann, Lloyd
Dynamowerke GmbH & Co.
KG
17:00 – 17:30 Integrierte Gesamtsimulation von
Offshore Windenergieanlagen
D. Kaufer, Universität
Stuttgart
17:30 – 18:00 Windkraftanlagen mit Vertikalachse –
Entwicklung und Optimierung mit CFD
B. Hanna, CFD Consultants
GmbH
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Clearly a System
Full of Innovation
Dynamic Operating
Conditions
High Cost of Failure
Medium sized and
relatively young
companies
ANSYS Simulation Software
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From Single Part to System Simulation
• Structural Mechanics
• Fluid Dynamics
• Thermal Analysis
• Electromagnetics
Single Physics on Component Level
• Multiphysics
• Automated Load Transfer
• Direct and Sequential coupling Coupled Physics on
Component Level
• Power Electronics
• Control Loops
• Coupled Physics
• Reduced ModelsSystem
Simulation
ANSYS Simulation Software
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Structural Analysis
Fatigue analysis
Component Level
Non-linear
stability analysis
Non-linear
material and
contact modelling
Composite
modeling
Courtesy of SKF
GmbH
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Challenges in Composite Structural
Laminate & Sandwich
Free form surface from aerodynamics
Multiple material systems involved
Complex layup with huge amount of plies
Arbitrary fiber orientation
Ply and sandwich failure
Component Level
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Customer Feedback in ANSYS Composite PrepPost
Component Level
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Fatigue Assessment using ANSYS nCode Designlife
Integration into the Workbench environment
Load channel information and material data is passed from Mechanical to nCode
Component Level
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Typical nCode Workflow
Fatigue Assessment using ANSYS nCode Designlife
Component Level
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Wind Turbine Positioning
Tower Crane
dimensioning
Transportation of Spar
Truss on Heavy Lift
Vessel
Advanced Modeling of
soil structure - strength
driven problems in rock
and soil (stability, failure)
Courtesy of Liebherr, Ehingen
Courtesy of Technip Offshore Finland
Component Level
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Challenges
Designing substructure under
combined loads of wind, current,
and waves
Proving compliance with
established codes
Benefits of CAE
Gaining a clear understanding of all
loads experienced by substructure
Including coupling to Flex5 standard
tools
Built-in code checking
Photo © Tore Johannesen.
Offshore Turbines
Component Level
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Acoustic Simulation
Hydro-Acoustic Simulation of a
Hydraulic MENCK Hammer
Reduce of gear box and brake noises
Noise emission between blade and
tower
Component Level
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Fluid Dynamics
Component Level
Site Selection
Aerodynamic
analysis
of a wind turbine
blade
Cooling analysis
of an electric maschine
Courtesy of GAMESA
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Aerodynamic Blade Design
Challenges
Design of 2D profiles 3D blades
Advanced turbulence modeling:
Flow separations
Laminar to turbulent transition
Roughness effects
Tip vortices
Scale resolving simulation (LES, SAS …)
Interaction with upstream turbines
Design studies & optimization
Photo © José Luis Gutiérrez, graphic courtesy of IMPSA S.A., Argentina
Component Level
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Nacelle / Tower Base Cooling
Challenges
Ensure effective cooling under all
environmental conditions
Complex geometries & many details
Many parameters:
Fan positions & number
Positions of electrical devices
Outside temperature &
incoming sun radiation Benefits of simulations
Virtual prototyping of different cooling
solutions
Less trial & error
Reduce thermal peak loads on
generator, gear, transformer, etc.
Pre-identify “problem” regionsCourtesy of GAMESA
Component Level
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Wind Park Design & Site Selection
Challenges
Steep terrain, mountains, forests
Predict wind behavior & turbulences
Varying wind directions and speeds
Benefits of simulations
Power estimates
Optimize turbine placement
Wind speed & turbulence prediction
over complex terrain
Component Level
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Example: Wind Farm & Multiple Wakes
Wind speed at hub height, wind direction 210º
Without wind turbines With wind turbines
Component Level
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Simulation of a
rotating electrical
machines
Electromagentic
analysis of a sensor
Electromagnetic Analysis
Automated and efficient
machine design
workflow
Component Level
Electromagentic
analysis of cables
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Improvement of efficiency
of el. Machines
Smaller stray magnetic field
Better area guidance
Less Loss
Less iron loss
Less copper loss
Less Eddy currents
High quality material
Component Level
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ANSYS Simulation Software
Coupled Field Analysis
on Component Level
Structural deformation of
a coil due to magnetic
and thermal loads
Temperatures in a
stator of an electric
machine
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ANSYS Workbench R13 Interface
Maxwell
B-Field, Losses
Ansys Thermal
Temperature
EM Loss
Temperature
ANSYS Simulation Software
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Power ElectronicsTurbine Blades Gear Box Electric
Generator
System Simulation
of an Entire Wind Turbine
Mechanical Solution
Electrical Solution
ANSYS Simulation Software
Reduced Order ModelsSystem
Response
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Conclusion
Analysis of wind energy system is multi-
level
Require: in-depth analysis of single
components
Wind energy system is multi-domain
Interactions between subsystems of
different physical domain, electrical,
mechanical, thermal, fluid dynamic…
Analysis of system interactions
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