Communion Of Dreams


Enter the vortex.
November 30, 2008, 10:33 am
Filed under: Climate Change, Daily Kos, Global Warming, Science, tech

Ever stand on the bank of a stream and watch a submerged stick oscillate up and down?  Or maybe seen something similar happen when you were fishing, and a cork/bobber got pulled underwater, the way it will swing back and forth?

That’s vortex induced vibration.  And it is a real problem for all kinds of engineering disciplines – just about any real world application which involves a fluid (or a gas, or even a plasma I suppose).

It could also be the thing which saves us from a carbon-based energy nightmare.  Vortex Hydro Energy is a new technology which could supply clean, renewable energy.  Professor Michael M. Bernitsas at the University of Michigan has helped pioneer this system.  From his University profile:

Current Energy Conversion: Invented, designed, and model-tested for the VIVACE http://www.vortexhydroenergy.com/ (Vortex Induced Vibration Aquatic Clean Energy) energy converter (patent pending UofM#2973). VIVACE is an ocean/river current energy converter based on the idea of enhancing rather than spoiling vortex shedding, increasing rather than suppressing VIV under high damping, and harnessing rather than mitigating VIV energy. VIV was first observed by Leonardo daVinci in 1504AD in the form of “Aeolian Tones”. Since then, engineers have been trying to suppress VIV which damage aero, civil, mechanical, marine, offshore, nuclear engineering structures. The VIVACE Converter takes this destructive force in nature and utilizes for the benefit of mankind. The VIVACE Converter is designed to be in high damping VIV ? thus extracting energy at high efficiency – over the range of current velocity that is of practical interest: 0.25-2.5m/sec (0.5-5.0knots) [79-80]. Testing of the VIVACE Converter in the Low Turbulence Free Surface Water Channel of Ocean Renewable Energy Laboratory at the University of Michigan for high damping resulted in a power harnessing rate of PVIVACE=0.22pwDLU3 for current velocity of only 0.840m/sec (1.63 knots) [80-82].

News of this just broke, and the research is still very much in its early stages. So there is still a lot to be done to assess the potential power generation as well as the downsides of applying the technology. It is likely that placement of the VIVACE system would be critical, so as not to disrupt environmental conditions necessary to the maintenance of a healthy planet.  But it strikes me as a potentially elegant solution to the problem of safe power generation with minimal environmental impact, and would avoid many of the issues that such technologies as wind power have.

Fascinating.

Jim Downey

(Via dKos. Cross posted to UTI.)

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1 Comment so far
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Facinating indeed! Thak you for sharing. We all must doour part to provide information on energy healing for both the planet and it’s beautiful people.

Love and Light

Comment by Energy Healing




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