Press and Press Releases

Atargis participates in NREL TPL study

May 06, 2018 NREL

Atargis submitted a detailed technical description following an invitation by the National Renewable Energy Lab (NREL) to participate in a Technology Performance Level (TPL) assessment study. The TPL measures how cost competitive a renewable energy device is relative to the cost of other renewables and non-renewables.

Benchmarking Paper Submitted for Publication

December 20, 2017 J. Energies

Atargis submitted a numerical benchmarking study for publication that demonstrates how the CycWEC can extract more power at a much lighter overall device weight. The study extends the work published by Babarit et. al in 2012, by adding the CycWEC to the conventional WEC devices benchmarked in this paper. The paper is presently under peer review for publication in the journal Energies

Development of a New 1:100 Scale Experiment

August 2016, Atargis Energy

To experimentally validate the promising simulation results with an optimized CycWEC geometry, Atargis started the process of designing and developing a new 1:100 scale wave flume model. Unlike the model used in the NSF funded work in 2009, the new model enables shaft power measurements as well as advanced sensing of the incoming waves. The model also supports testing of improved blade pitch control algorithms.

CycWEC Wave Radiation and Scatter Performance Papers Published

January 2015, Applied Ocean Research

The results from the 2012 testing campaigns sparked the development of advanced simulation codes at Atargis to investigate the effects of three dimensional wave radiation, as well as the span of the CycWEC blades. Initial results from these simulations show that the three dimensional wave radiation effects increase power capture. The advanced foil simulation results enabled optimization of the CycWEC geometry, which led to a reduced diameter as well as foil chord. Both effects together improve power production and decrease cost compared to earlier estimates. The full papers can be found in the scientific publication section of this page.

Wave Climate Scatter Performance of a Cycloidal Wave Energy Converter Wave Radiation of a Cycloidal Wave Energy Converter

US trying to produce power from ocean waves

August 06, 2012, China Daily

Although ocean wave technology still has a long way to go, US scientists are now seeking ways to make ocean wave energy the nation's newest source of green power, local media reported on Sunday.

China Daily

Scientists seek next wave in power generation

August 05, 2012, Houston Chronicle

Aerospace engineers are working to make ocean wave energy the nation's newest source of green power by applying the physics of wind turbines to the sea. Former U.S. Air Force Academy scientists took over Texas A&M University's wave tank recently to test the idea that if air can produce affordable electricity, so can ocean water. For decades, researchers have sought ways to turn the energy in ocean waves into electricity - economically and with minimal impact to marine environments. But as other forms of renewable energy have flourished, commercial power from ocean waves hasn't made it onto U.S. grids.

Houston Chronicle

Seeking power from the sea

August 06, 2012, San Antonio Express News

Aerospace engineers are working to make ocean wave energy the nation's newest source of green power by applying the physics of wind turbines to the sea.

San Antonio Express News

Atargis Energy successfully converts ocean wave energy to electricity using a Cycloidal Wave Energy Converter

February 05, 2012, Colorado Springs Gazette

Colorado Springs may be landlocked, but a local company could hold the key to unlocking the power of the sea — if it can navigate the tricky shoals that separate research from business. Atargis Energy Corporation, named after a mythical half-man, half-fish sea god, was founded two years ago to turn president and chief technology officer Stefan Siegel’s Air Force Academy research on wave energy into a workable product.

Colorado Springs Gazette

On the crest of wave energy

November 18, 2009, NSF News

The ocean is a potentially vast source of electric power, yet as engineers test new technologies for capturing it, the devices are plagued by battering storms, limited efficiency, and the need to be tethered to the seafloor. Now, a team of aerospace engineers is applying the principles that keep airplanes aloft to create a new wave-energy system that is durable, extremely efficient, and can be placed anywhere in the ocean, regardless of depth. While still in early design stages, computer and scale-model tests of the system suggest higher efficiencies than wind turbines.

NSF News

Academy awarded $285,000 for wave energy research

August 20, 2008, Air Force News

The next source of alternative energy could come from ocean waves, and Air Force Academy professors have been granted funding to dive into this research. The National Science Foundation has awarded the Academy's Aeronautics Department $285,619 to support a cycloidal propeller wave energy converter research project to harness the ocean's power. The concept of ocean waves turning power-generating turbines is simple -- put propellers underwater, then let the motion of incoming and outgoing waves, along with tidal currents turn the propellers and turbines to crank out electricity.

Colorado Springs Gazette

Scientific Publications

Deep Ocean Wave Cancellation Using a Cycloidal Turbine

2009

Ocean Wave Energy Conversion Using a Cycloidal Wave Energy Converter

2009

Intermediate Ocean Wave Termination Using a Cycloidal Wave Energy

2010

Wave Generation Experiments Using a Cycloidal Turbine

2010

Deep Ocean Wave Energy Conversion using a Cycloidal Turbine

2009

Experimental Wave Generation And Cancellation With A Cycloidal Wave Energy Converter

2011

Siegel, S.; Roemer, M.; Imamura, J.; Fagley, C. & Mclaughlin, T.

30th International Conference on Ocean, Offshore and Arctic Engineering (OMAE)

Cancellation Of Non-harmonic Waves Using A Cycloidal Turbine

2011

Irregular Deep Ocean Wave Energy Conversion Using a Cycloidal Wave Energy Converter

2011

Tiger Jeans, Casey Fagley, Stefan Siegel and Jurgen Seidel

Proceedings of the 9th European Wave and Tidal Energy Conference, Southampton, UK

Experimental Wave Cancellation using a Cycloidal Wave Energy Converter

2011

Stefan Siegel, Casey Fagley, Marcus Roemer and Thomas McLaughlin

Proceedings of the 9th European Wave and Tidal Energy Conference, Southampton, UK

Experimental Investigation of Irregular Wave Cancellation using a Cycloidal Wave Energy Converter

2012

Computational Investigation of Irregular Wave Cancellation using a Cycloidal Wave Energy Converter

2012

Experimental wave termination in a 2D wave tunnel using a cycloidal wave energy converter

2012

Siegel, S. G.; Fagley, C. & Nowlin, S.

Applied Ocean Research, Vol. 38, October 2012, pg. 92-99

Wave Cancellation Experiments using a 1:10 Scale Cycloidal Wave Energy Converter

2012

Numerical Simulations of a Cycloidal Wave Energy Converter

2012

Final Scientific Report for DOE Grant DE-EE0003635

2013

3D Efficiency Analysis of Cycloidal Wave Energy Converters in Oblique Wave Fields

2013

Analysis of a Cycloidal Wave Energy Converter using unsteady Reynolds Averaged Navier-Stokes Simulation

2014

Wave Climate Scatter Performance of a Cycloidal Wave Energy Converter

2014

Cycloidal Wave Energy Converter – Progress Report

2014

Wave Radiation of a Cycloidal Wave Energy Converter

2015

Patents

U. S. Patent 7,686,583

August 2010

Siegel, S. G. Cyclical Wave Energy Converter

Google Patents

U. S. Patent 7,762,776

2010

Siegel, S. G. Vortex Shedding Cyclical Propeller

Google Patents

U. S. Patent 8,100,650

2012

Siegel, S. G. Cyclical Wave Energy Converter

Google Patents

Korean Patent 936076

2009

Siegel, S. G. Vortex Shedding Cyclical Propeller

Korean Patent 898996

2009

Siegel, S. G. Cyclical Wave Energy Converter

U. S. Patent 9,297,351

2016

Siegel, S. G. Efficient Wave Energy Conversion Using Cycloidal Turbines

U. S. Patent 9,115,687

2015

Siegel, S. G. Clustering of Cycloidal Wave Energy Converters

Japanese Patent 5090023

2012

Siegel, S. G. Vortex Shedding Cyclical Propeller

Japanese Patent 5150152

2012

Siegel, S. G. Cyclical Wave Energy Converter

World Patent Application WO 2014/026019 A2

2014

Siegel, S. G. Ocean Floor Mounting of Wave Energy Converters

World Patent Application WO 2014/026027 A2

2014

Siegel, S. G. Clustering of Cycloidal Wave Energy Converters

European Patent No. 1835173

2014

Siegel, S. G. Vortex Shedding Cyclical Propeller

U. S. Patent 8,937,395

2015

Siegel, S. G. Ocean Floor Mounting of Wave Energy Converters