Tapping The Undersea Vortex For Green Energy

11/29/2008 05:12 am ET | Updated May 25, 2011
  • Alexis Madrigal Wired.com

By tapping the natural motion of slow-moving water, a new hydrokinetic generator could open vast new swaths of the ocean for energy production.

When ocean currents flow over any kind of cylinder, like the long cables that hold drilling platforms in place, small vortices are created. They eventually spin away, or shed, causing vibrations that over time can destroy an oil rig's moorings.

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