Volumes | Wind Energy Symposium | American Society of Mechanical Engineers Digital Collection

Topics: Fatigue , Glass reinforced plastics , Laminates , Modeling , Spectra (Spectroscopy) , Stress , Blades , Compression , Wind turbines , Construction

Alternative Materials, Manufacturing Processes, and Structural Designs for Large Wind Turbine Blades

Dayton A. Griffin

WIND 2002; 27-39doi:https://doi.org/10.1115/WIND2002-25

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Topics: Blades , Manufacturing , Structural design , Wind turbines , Resins , Stiffness , Transportation systems , Weight (Mass) , Carbon , Composite materials

Investigation of a Two-Stage Injection Process to Reduce the Effects of In-Plane Resin Flow

Erik Larsen, Douglas Cairns, John Mandell, Daniel Samborsky

WIND 2002; 40-46doi:https://doi.org/10.1115/WIND2002-26

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Topics: Flow (Dynamics) , Resins , Textiles , Manufacturing , Fibers , Finishes , Gates (Closures) , Hydrostatic pressure , Pressure , Vacuum

Cost Effective Large Blade Components by Using Carbon Fibres

P. A. Joosse, D. R. V. van Delft, Chr. Kensche, D. Soendergaard, R. M. van den Berg, F. Hagg

WIND 2002; 47-55doi:https://doi.org/10.1115/WIND2002-27

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Topics: Blades , Carbon fibers , Design , Fatigue , Laminates , Testing , Epoxy adhesives , Epoxy resins , Fatigue properties , Joules

Concepts for Adaptive Wind Turbine Blades

Thomas D. Ashwill, Paul S. Veers, James Locke, Ivan Contreras, Dayton Griffin, Mike D. Zuteck

WIND 2002; 56-69doi:https://doi.org/10.1115/WIND2002-28

Abstract

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Topics: Blades , Wind turbines , Design , Fibers , Carbon , Composite materials , Conceptual design , Durability , Fatigue , Manufacturing

Aerodynamics, Experiments and Modeling: Session I

Rotational Augmentation of Horizontal Axis Wind Turbine Blade Aerodynamic Response

S. Schreck, M. Robinson

WIND 2002; 70-82doi:https://doi.org/10.1115/WIND2002-29

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Topics: Blades , Horizontal axis wind turbines , Aerodynamics , Pressure , Disks , Flow (Dynamics) , NASA , Physics , Rotating blades , Turbines

Application of a Viscous Flow Methodology to the NREL Phase VI Rotor

Guanpeng Xu, Lakshmi N. Sankar

WIND 2002; 83-93doi:https://doi.org/10.1115/WIND2002-30

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Topics: Rotors , Viscous flow , Blades , Flow (Dynamics) , Horizontal axis wind turbines , Vortices , Biot-Savart law , Boundary element methods , Boundary layers , Delays

Navier-Stokes Predictions of the NREL Phase VI Rotor in the NASA Ames 80-By-120 Wind Tunnel

N. N. So̸rensen, J. A. Michelsen, S. Schreck

WIND 2002; 94-105doi:https://doi.org/10.1115/WIND2002-31

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Topics: NASA , Rotors , Wind tunnels , Computation , Computational fluid dynamics , Flow (Dynamics) , Pressure , Torque , Yaw

Detached-Eddy Simulation of Flow Around the NREL Phase-VI Blade

J. Johansen, N. N. So̸rensen, J. A. Michelsen, S. Schreck

WIND 2002; 106-114doi:https://doi.org/10.1115/WIND2002-32

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Topics: Blades , Eddies (Fluid dynamics) , Flow (Dynamics) , Simulation , Computation , Computational fluid dynamics , Simulation models , Turbulence , Wind turbines , Boundary layers

Bubble Induced Unsteadiness on Wind Turbine Airfoils

E. A. Mayda, C. P. van Dam, Earl P. N. Duque

WIND 2002; 115-125doi:https://doi.org/10.1115/WIND2002-33

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Topics: Airfoils , Bubbles , Wind turbines , Aerodynamics , Fluid-dynamic forces , Chords (Trusses) , Flow (Dynamics) , Horizontal axis wind turbines , Oscillations , Pressure

Conclusions From the Comparisons of Numerous 2D Airfoil Computations With Experiments

F. Bertagnolio, N. N. So̸rensen, J. Johansen, P. Fuglsang

WIND 2002; 126-132doi:https://doi.org/10.1115/WIND2002-34

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Topics: Airfoils , Computation , Flow (Dynamics) , Wind turbines

Experimental Investigation of Airfoil Subject to Harmonic Translatory Motions

Mac Gaunaa, Jens N. So̸rensen

WIND 2002; 133-140doi:https://doi.org/10.1115/WIND2002-35

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Topics: Airfoils , Damping , Flow (Dynamics) , Pressure , Rotors , Wind turbines

Aerodynamics, Experiments and Modeling: Session II

Challenges in Modeling the Unsteady Aerodynamics of Wind Turbines

J. Gordon Leishman

WIND 2002; 141-167doi:https://doi.org/10.1115/WIND2002-37

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Topics: Aerodynamics , Modeling , Wind turbines , Ambiguity , Blades , Flow (Dynamics) , Turbines , Wakes

An Examination of Key Aerodynamic Modeling Issues Raised by the NREL Blind Comparison

Frank N. Coton, Tongguang Wang, Roderick A. McD. Galbraith

WIND 2002; 168-178doi:https://doi.org/10.1115/WIND2002-38

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Topics: Modeling , NASA , Aerodynamics , Blades , Tunnels , Wakes , Wind tunnels

Validation of the AeroDyn Subroutines Using NREL Unsteady Aerodynamics Experiment Data

David J. Laino, A. Craig Hansen, Jeff E. Minnema

WIND 2002; 179-189doi:https://doi.org/10.1115/WIND2002-39

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Topics: Aerodynamics , Inflow , Rotors , Vibration , Wind tunnels , Airfoils , Blades , Computer software , Delays , Dynamics (Mechanics)

The Nebulous Art of Using Wind-Tunnel Airfoil Data for Predicting Rotor Performance

James L. Tangler

WIND 2002; 190-196doi:https://doi.org/10.1115/WIND2002-40

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Topics: Airfoils , Rotors , Wind tunnels , Blades , Momentum , NASA , Wakes

Expanding Wake Induction Effects on Thrust Distribution on a Rotor Disk

K. Chaney, A. J. Eggers, Jr.

WIND 2002; 197-205doi:https://doi.org/10.1115/WIND2002-41

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Topics: Disks , Electromagnetic induction , Rotors , Thrust , Wakes , Flow (Dynamics) , Vorticity , Wind turbines , Approximation , Boundary-value problems

Aerodynamic Simulations of Wind Turbines Operating in Atmospheric Boundary Layer With Various Thermal Stratifications

Cedric Alinot, Christian Masson

WIND 2002; 206-215doi:https://doi.org/10.1115/WIND2002-42

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Topics: Boundary layers , Engineering simulation , Simulation , Wind turbines , Buoyancy , Turbines , Wakes , Actuators , Approximation , Blades

Aero-Acoustic Computations of Wind Turbines

Wen Zhong Shen, Jess A. Michelsen, Jens No̸rkær So̸rensen

WIND 2002; 216-222doi:https://doi.org/10.1115/WIND2002-43

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Topics: Acoustics , Computation , Wind turbines , Algorithms , Blades , Flow (Dynamics) , Noise (Sound) , Actuators

Structural Analysis

A Framework for Dynamic and Aeroelastic Analysis of Horizontal Axis Wind Turbines

Donghoon Lee, Dewey H. Hodges

WIND 2002; 223-236doi:https://doi.org/10.1115/WIND2002-44

Abstract

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Topics: Horizontal axis wind turbines , Steady state , Blades , Dynamics (Mechanics) , Finite element analysis , Design , Differential equations , Dynamic stability , Stress , Transients (Dynamics)

Influence of Transition Modes and Gravity Loads on Rotor Fatigue and Power Control

A. J. Eggers, Jr., P. Moriarty, K. Chaney, R. Digumarthi, W. E. Holley

WIND 2002; 237-243doi:https://doi.org/10.1115/WIND2002-46

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Topics: Fatigue , Gravity (Force) , Rotors , Stress , Blades , Fatigue life , Wind velocity , Fatigue damage , Turbulence , Weight (Mass)

Modal Response of 3-Bladed Wind Turbines

David J. Malcolm

WIND 2002; 246-255doi:https://doi.org/10.1115/WIND2002-47

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Topics: Wind turbines , Mode shapes , Blades , Displacement , Horizontal axis wind turbines , Inflow , Turbines , Wind shear , Yaw

Vibrations of a Three-Bladed Wind Turbine Rotor Due to Classical Flutter

M. H. Hansen

WIND 2002; 256-266doi:https://doi.org/10.1115/WIND2002-48

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Topics: Flutter (Aerodynamics) , Rotors , Vibration , Wind turbines , Turbines , Blades , Dynamics (Mechanics) , Risk , Damping , Eigenvalues

Predicting the Long Term Distribution of Extreme Loads From Limited Duration Data: Comparing Full Integration and Approximate Methods

LeRoy M. Fitzwater, Steven R. Winterstein, C. Allin Cornell

WIND 2002; 267-277doi:https://doi.org/10.1115/WIND2002-49

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Topics: Stress , Turbulence , Wind turbines , Wind velocity

Effect of Turbulence Variation on Extreme Loads Prediction for Wind Turbines

Patrick J. Moriarty, William E. Holley, Sandy Butterfield

WIND 2002; 278-287doi:https://doi.org/10.1115/WIND2002-50

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Topics: Stress , Turbulence , Wind turbines , Probability , Engineering simulation , Simulation , Density , Fittings , Gaussian distribution , Log normal distribution

Power Production and System Controls

System Control Based on a State Model Specifying, Design-In and Measuring of the Availability

H. Richters, L. Rademakers, B. Rajsekhar, H. Braam, C. Versteegh, F. Wubben

WIND 2002; 288-298doi:https://doi.org/10.1115/WIND2002-51

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Topics: Design , Wind turbines , Downtime , Maintenance , Testing performance

Design of State-Space-Based Control Algorithms for Wind Turbine Speed Regulation

Alan D. Wright, Mark J. Balas

WIND 2002; 299-309doi:https://doi.org/10.1115/WIND2002-52

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Topics: Control algorithms , Design , Wind turbines , Turbines , Rotors , Stress , Control equipment , Degrees of freedom , Fluctuations (Physics) , Generators

Periodic Disturbance Accommodating Control for Speed Regulation of Wind Turbines

Karl Stol, Mark Balas

WIND 2002; 310-320doi:https://doi.org/10.1115/WIND2002-53

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Topics: Blades , Control equipment , Degrees of freedom , Dynamics (Mechanics) , Freezing , Machinery , Rotors , Turbines , Wind , Wind turbines

Load Control for Turbine Blades: A Non-Traditional Microtab Approach

D. T. Yen Nakafuji, C. P. van Dam, J. Michel, P. Morrison

WIND 2002; 321-330doi:https://doi.org/10.1115/WIND2002-54

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Topics: Stress , Turbine blades , Wind turbines , Airfoils , Blades , Drag (Fluid dynamics) , Flow (Dynamics) , Flow control , Actuators , Design methodology

Identification of Synchronous Generator Transfer Functions From Standstill Test Data

David-P. Molenaar, O. H. Bosgra, M. J. Hoeijmakers

WIND 2002; 331-339doi:https://doi.org/10.1115/WIND2002-55

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Topics: Generators , Transfer functions , Control equipment , Design , Dynamic models , Engineering simulation , Simulation , Wind turbines

Cogging Torque Reduction in a Permanent Magnet Wind Turbine Generator

E. Muljadi, J. Green

WIND 2002; 340-342doi:https://doi.org/10.1115/WIND2002-56

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Topics: Generators , Permanent magnets , Torque , Wind turbines

A Preliminary Evaluation of a Multiple-Generator Drivetrain Configuration for Wind Turbines

Jason R. Cotrell

WIND 2002; 345-352doi:https://doi.org/10.1115/WIND2002-67

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Topics: Generators , Wind turbines , Reliability , Renewable energy , Rotors , Torque , Turbines , Wind

Short-Term Power Fluctuations of Large Wind Power Plants

Yih-Huei Wan, Demy Bucaneg, Jr.

WIND 2002; 353-360doi:https://doi.org/10.1115/WIND2002-58

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Topics: Fluctuations (Physics) , Wind farms , Wind power , Wind , Power systems (Machinery) , Public utilities , Renewable energy , Wind velocity

A Study of a Wind Farm Power System

E. Muljadi, Y. Wan, C. P. Butterfield, B. Parsons

WIND 2002; 361-370doi:https://doi.org/10.1115/WIND2002-59

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Topics: Capacitors , Electromagnetic induction , Generators , Power systems (Machinery) , Wind farms , Wind turbines

Turbine Testing and Siting

Advanced Aerodynamics Methods for Wind Site Selection

Francesco Castellani, Giordano Franceschini

WIND 2002; 371-381doi:https://doi.org/10.1115/WIND2002-60

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Topics: Aerodynamics , Wind , Engineering simulation , Flow (Dynamics) , Roads , Simulation , Turbines , Vehicle dynamics , Wind turbines

Wind Turbines Operating in Cold Climates: Reynolds Number and Turbulence Effects on Performances

Nathalie Dabin, Christophe Leclerc, Christian Masson, Cedric Alinot

WIND 2002; 382-392doi:https://doi.org/10.1115/WIND2002-61

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Topics: Cold climates , Reynolds number , Turbulence , Wind turbines , Computer simulation , Density , Turbines , Actuators , Blades , Damage

Field Tests of a Wind-Electric Controller for Parallel Stock Water Pumping and Heating

Scott A. Morton, John E. Nydahl

WIND 2002; 393-400doi:https://doi.org/10.1115/WIND2002-66

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Topics: Control equipment , Heating , Water , Wind , Pumps , Stress , Engines , Motors , Wind velocity , Freezing

Acoustic Emission Monitoring of Small Wind Turbine Blades

P. A. Joosse, M. J. Blanch, A. G. Dutton, D. A. Kouroussis, T. P. Philippidis, P. S. Vionis

WIND 2002; 401-411doi:https://doi.org/10.1115/WIND2002-63

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Topics: Acoustic emissions , Blades , Wind turbines , Damage , Composite materials , Cracking (Materials) , Failure , Fatigue , Fatigue testing , Fibers