Energy generation using vortex
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This document discusses energy harvesting from natural fluid flows using vortex shedding. Vortex shedding is the oscillating flow that occurs behind bluff bodies in a fluid stream, and can be harnessed to generate energy. The document proposes that enhancing vortex shedding could provide clean, renewable energy from ocean currents and tidal flows. While more research is needed, vortex energy harvesting has the potential to meet a significant portion of global energy needs in a way that is more powerful, renewable and low-cost than existing wind and hydro technologies.
Energy generation using vortex
- 1. Vortex Energy Energy Harvesting from natural flows Clean | Efficient | Powerful Lavish Ordia Department of Mechanical Engineering, IIT Bombay 1 Lavish Ordia A. Venugopal Department of Mechanical Engineering, IIT Bombay
- 2. Wonder Why so? Fluttering of flag Lavish Ordia Department of Mechanical Engineering, IIT Bombay 2 INDIA
- 3. Lavish Ordia Department of Mechanical Engineering, IIT Bombay 3 Tacoma Narrows Bridge Collapse Washington, 1940
- 4. Vortex Shedding Oscillating periodic flow that takes place when a fluid flows past a body At certain velocities, depending on the size and shape of the body Eg. Fluttering of Handkerchief, leaves of trees; swaying of trees and many more. Lavish Ordia Department of Mechanical Engineering, IIT Bombay 4 Reference : Wikipedia
- 5. Ocean Current Map Lavish Ordia Department of Mechanical Engineering, IIT Bombay 5
- 6. Vortex Shedding • What if this could be used in a positive way? • Enhancing this oscillations to generate energy • Potential : Can meet 10% energy needs of US • More than 50% of the U.S. population lives and works within 50 miles of the coastline • Clean, Renewable, Powerful energy • No turbines, propellers, or dams • More powerful in water, smaller scale model can be used in air • Can substitute windmills World’s oceans contain an astounding amount of energy in the form of waves, currents, tidal flows and temperature gradients Lavish Ordia Department of Mechanical Engineering, IIT Bombay 6
- 7. Impact!! • Current World Wide Electricity generation 16,000 TWh • The total accessible market, near population centers, is estimated at 4,000 TWh Is it so clean??? Lavish Ordia Department of Mechanical Engineering, IIT Bombay 7
- 8. Schematic of Energy generation 8
- 9. Demo | Video Lavish Ordia Department of Mechanical Engineering, IIT Bombay 9
- 10. Principle | Outline • Three way coupling of energy Lavish Ordia Department of Mechanical Engineering, IIT Bombay 10
- 11. Another design Lavish Ordia Department of Mechanical Engineering, IIT Bombay 11 Use of Piezoelectric materials
- 12. Advantages • Easy to set up (compared to dams, wind mills, solar cells etc.) • Less maintenance • High energy density • Low cost • Renewable, no green house gas emissions A lot of research required for commercialization And optimizing the performance May take more than a decade to come into practice Lavish Ordia Department of Mechanical Engineering, IIT Bombay 12
- 13. Thank You! Lavish Ordia Department of Mechanical Engineering, IIT Bombay 13