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GE, Sandia National Lab Discover Pathway to Quieter, More Productive Wind Turbines - GE Global Research, the technology development arm of the General Electric Company announced research that could significantly impact the design of future wind turbine blades [NYSE: GE]
GE, Sandia National Lab Discover Pathway to Quieter, More Productive Wind Turbines

 

NewswireToday - /newswire/ - Niskayuna, NY, United States, 2013/08/15 - GE Global Research, the technology development arm of the General Electric Company announced research that could significantly impact the design of future wind turbine blades [NYSE: GE]. NYSE: GE

   
 
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• Use of powerful Red Mesa supercomputer yields valuable insights that will enable blades with less aerodynamic noise;
• New wind blade design could deliver two-percent more power from same size turbine rotor;
• With over 240GW of wind power generation forecasted through 2017, newly designed blades could provide enough additional electricity to power three major American cities.

Utilizing the power of high-performance computing (HPC) to perform complex calculations, GE engineers have overcome previous design constraints, allowing them to begin exploring ways to design reengineered wind blades that are low-noise and more prolific power-producers.

Partnering with the Sandia National Laboratories (Sandia) in Albuquerque, New Mexico, GE’s work focused on advancing wind turbine blade noise prediction methods. Aerodynamic blade noise is the dominant noise source on modern, utility-scale wind turbines and represents a key constraint in wind turbine design. Efforts to reduce blade noise can help reduce the cost of wind energy and increase power output. In fact, GE predicts a 1 decibel quieter rotor design would result in a two-percent increase in annual energy yield per turbine. With approximately 240GW of new wind installations forecasted globally over the next five years, a two-percent increase would create 5GW of additional wind power capacity. That’s enough to power every household in New York City, Boston, and Los Angeles, combined.

“There’s no question, aerodynamic noise is a key constraint in wind turbine blade design today”, said Mark Jonkhof, Wind Technology Platform Leader at GE Global Research. “By using high-performance computing to advance current engineering models that are used to predict blade noise, we can build quieter rotors with greater blade tip velocity that produce more power. This not only means lower energy costs for consumers, but also a significant reduction in greenhouse gas emissions.”

Jonkhof added,“Having access to Sandia’s supercomputer was invaluable in our ability to conduct these experiments and make discoveries that will bolster wind power’s potential. Access and availability to HPC resources offers a critical advantage to companies trying to compete in a global environment.”

To ensure that GE’s wind blades do not pose noise issues today, airfoil level acoustic measurements are performed in wind tunnels, field measurements are done to validate acceptable noise levels, and noise-reducing operating modes are implemented in the control system. Better modeling will help maintain the current low noise levels while boosting output.

“Sandia and other DOE national laboratories are using high-performance computing resources to tackle complex design problems in wind energy, such as reducing turbine blade noise to achieve significant reductions in cost-of-energy. Sandia helped GE gain valuable insights into blade noise mechanisms and how design engineers can improve their models,” said Matt Barone, of Sandia’s Aerosciences Department, formerly of the Wind Energy Technologies Department.

GE’s testing involved Sandia’s Red Mesa supercomputer running a high-fidelity Large Eddy Simulation (LES) code, developed at Stanford University, to predict the detailed fluid dynamic phenomena and resulting wind blade noise. For a period of three months, this LES simulation of the turbulent air flow past a wind blade section was continuously performed on the Red Mesa HPC. The resulting flow-field predictions yielded valuable insights that were used to assess current engineering design models, the assumptions they make that most impact noise predictions, and the accuracy and reliability of model choices.

“We found that high fidelity models can play a key role in accurately predicting trailing edge noise,” Jonkhof went on to say. “We believe that the results achieved from our simulations would, at the very least, lay the groundwork for improved noise design models.”

About GE Global Research
GE Global Research (ge.com/research) is the hub of technology development for all of GE's businesses. Our scientists and engineers redefine what’s possible, drive growth for our businesses, and find answers to some of the world’s toughest problems.

We innovate 24 hours a day, with sites in Niskayuna, New York; San Ramon, California; Bangalore, India; Shanghai, China; Munich, Germany; and Rio de Janeiro, Brazil.

About Sandia National Laboratory
Sandia National Laboratories is a multi-program laboratory operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Company, for the U.S. Department of Energy’s National Nuclear Security Administration. With main facilities in Albuquerque, N.M., and Livermore, Calif., Sandia has major R&D responsibilities in national security, energy and environmental technologies and economic competitiveness.

 
 
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GE, Sandia National Lab Discover Pathway to Quieter, More Productive Wind Turbines

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Productive Wind Turbines | GE News Center
Publisher Contact: Todd Alhart - GE Global Research 
518-387-7914 todd.alhart[.]ge.com
 
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