PUBLICATIONS January 30, 2013
Relevant Patents
1. Bernitsas M.M., Raghavan K., “Converter of Current, Tide, or Wave Energy”, United States Patent and Trademark Office, Patent# 7,493,759 B2 issued on February 24, 2009.
2. Bernitsas, M. M. and Raghavan, K., May 25, 2007, “Enhancement of Vortex Induced Forces & Motion through Surface Roughness Control” United States Patent and Trademark Office, Patent# 8,042,232 November 1, 2011.
3. Bernitsas, M. M. and Raghavan, K., May 25, 2007, “Reduction/Suppression of Vortex Induced Forces & Motion through Surface Roughness Control”, U.S. Provisional Patent Application, US2009/0114002 A1; (UofM#3757).
4. Bernitsas, M. M., Simiao, G., Macklem, R., “Self-Powering, Unmanned Underwater Vehicle Utilizing Marine Hydrokinetic Energy through Flow Induced Motion Enhancement”, Patent pending, serial number 61/426,628, Dec. 22, 2010.
Journal Publications
5. Bernitsas M.M., Raghavan K., Ben-Simon Y., Garcia E. M. H., “VIVACE (Vortex Induced Vibration Aquatic Clean Energy): A New Concept in Generation of Clean and Renewable Energy from Fluid Flow”, OMAE 2006; and Journal of Offshore Mechanics and Arctic Engineering, ASME Transactions, Nov. 2008, Vol. 130, No. 4, pp. 041101-15.
6. Bernitsas M.M., Ben-Simon Y., Raghavan K., Garcia E. M. H., “The VIVACE Converter: Model Tests at Reynolds Numbers Around 105”, OMAE 2006; and Journal of Offshore Mechanics and Arctic Engineering, ASME Transactions, Feb. 2009, Vol. 131, No. 1, pp. 1-13.
7. Raghavan, K., Bernitsas, M. M., and Maroulis, D., “Effect of Reynolds Number on Vortex Induced Vibrations,” IUTAM Symposium, Hamburg, Germany, July 2007.
8. Raghavan, K., Bernitsas, M. M., and Maroulis, D., (2007b), “Effect of Bottom Boundary on VIV for Energy Harnessing at 8×103 <Re< 1.5×105”, OMAE 2007; and Journal of Offshore Mechanics and Arctic Engineering, ASME Transactions, May 2009, Vol. 131, No. 3, 031102.
9. Raghavan, K., Bernitsas, M. M. (2010), “Experimental Investigation of Reynolds Number Effect on Vortex Induced Vibration of Rigid Cylinder on Elastic Supports,” Ocean Engineering, Vol.38, #5-6, April 2011, pp.719-731.
10. Lee J.H., Xiros N., and Bernitsas M. M., “Virtual Damper-Spring System for VIV Experiments and Hydrokinetic Energy Conversion”, Ocean Engineering, Vol.38, #5-6, April. 2011, pp.732-747.
11. Lee J.H. and Bernitsas M. M., “High-Damping, High-Reynolds VIV Tests for Energy Harnessing Using the VIVACE Converter”, Ocean Engineering, Vol.38, #16, Nov. 2011, pp.1697-1712.
12. Chang C. C., Kumar, R. A. and Bernitsas M. M., “VIV and Galloping of Single Circular Cylinder with Surface Roughness at 3.0×104≤Re≤1.2×105 Ocean Engineering, Vol.38, #16, Nov. 2011, pp.1713-1732.
13. Lee J.H., Chang C. C., Xiros N., and Bernitsas M. M., “ Integrated Power Take Off and Virtual Oscillator System for the VIVACE Converter: Vck System Identification”, Proceedings of the 2009 ASME International Engineering Congress and Exposition, Paper #, IMECE2009-11430, Lake Buena Vista, FL, Nov. 13-19, 2009.
14. Bernitsas, M. M., Raghavan, K., and Duchene, G., “Induced Separation and Vorticity Using Roughness in VIV of Circular Cylinders at 8×103 < Re < 1.5×105,” Proceedings of the 27th OMAE’08 Conf., Paper #58023, Estoril, Portugal, June 15-20, 2008.
15. Bernitsas, M. M., and Raghavan, K., “Reduction/Suppression of VIV of Circular Cylinders through Roughness Distribution at 8×103 < Re < 1.5×105,” Proceedings of the 27th OMAE’08 Conf., Paper #58024, Estoril, Portugal, June 15-20, 2008.
16. Raghavan, K., and Bernitsas, M. M., “Enhancement of High Damping VIV through Roughness Distribution for Energy Harnessing at 8×103 < Re < 1.5×105,” Proceedings of the 27th OMAE’08 Conf., Paper #58042, Estoril, Portugal, June 15-20, 2008.
17. Kim E.S., Bernitsas M.M., Kumar, A.R., (2011), “Multi-Cylinder Flow Induced Motions: Enhancement by Passive Turbulence Control at 28,000<Re<120,000,” Proceedings of the 30th OMAE 2011 Conf., Paper #49405, Rotterdam, The Netherlands, June 19-24, 2011; Journal of Offshore Mechanics and Arctic Engineering, ASME Transactions, Vol.135, No. 1, Feb. 2013.
18. Park H.R., Bernitsas M.M., Kumar, A.R. (2011), “Selective Roughness in the Boundary Layer to Suppress Flow-Induced Motions of Circular Cylinders at 30,000<Re<120,000,” Proceedings of the 30th OMAE 2011 Conf., Paper #50302, Rotterdam, The Netherlands, June 19-24, 2011; Journal of Offshore Mechanics and Arctic Engineering, ASME Transactions, Vol.134, No. 4, Nov.2012.
19. Chang C.C. Bernitsas M.M. (2011), “Design of VIVACE Converter using PTC,” Proceedings of the 30th OMAE 2011 Conf., Paper #50290, Rotterdam, The Netherlands, June 19-24, 2011;Journal of Offshore Mechanics and Arctic Engineering, ASME Transactions, in press 2012.
20. Wu W., Bernitsas M.M., Maki, K.J., “RANS Simulation vs. Experimental Measurements of Flow Induced Motion of Circular Cylinder with Passive Turbulence Control at 30,000<Re<120,000,” Proceedings of the 30th OMAE 2011 Conf., Paper #50293, Rotterdam, The Netherlands, June 19-24, 2011; Journal of Offshore Mechanics and Arctic Engineering, ASME Transactions, in press 2012.
21. Park, H. R., R. A. Kumar, Bernitsas, M. M., “Enhancement of Flow Induced Motion of Rigid Circular Cylinder on Springs by localized Surface Roughness at 3×104≤Re≤ 1.2×105”, submitted Journal of Sound and Vibration, December 2012.
22. Park, H. R., R. A. Kumar, Bernitsas, M. M., “Suppression of Flow Induced Motion of Rigid Circular Cylinder on Springs by Localized Surface Roughness at 3×104≤Re≤1.2×105”, submitted Journal of Fluids and Structures, December 2012.
23. Lin Ding, L., Bernitsas, M.M., Kim, E. S., “2-D URANS vs. Experiments of Flow Induced Motions of Two Circular Cylinders in Tandem with Passive Turbulence Control For 30,000<Re<105,000”, submitted Ocean Engineering, January 2013.
24. Park, H. R., Bernitsas, M. M., Chang, C.C., “Robustness of the Map of Passive Turbulence Control to Flow-Induced Motions for a Circular Cylinder at 30,000<Re<120,000”, Proceedings of the 31st OMAE 2013 Conf., Paper #10123, Nantes, France, June 9-14, 2013.
25. Park, H. R., Bernitsas, M. M., Kim, E. S., “Selective Surface Roughness to Suppress Flow-Induced Motions of Two Circular Circular Cylinders at 30,000<Re<120,000”, Proceedings of the 31st OMAE 2013 Conf., Paper #10125, Nantes, France, June 9-14, 2013.
26. Kim, E.S., Bas. A., Francis, B., Melliti, N.A, Bernitsas, P.E., Vahid, A., Kana, A., Park, H. R., Bernitsas, M. M., “Two-Cylinder Flow-Induced Motions At 28,000<Re<120,000: Enhancement In Ultra-Low Speeds”, Proceedings of the 31st OMAE 2013 Conf., Paper #10870, Nantes, France, June 9-14, 2013.
27. Ding, L., Chen, Y, Kim, E. S., M. M. Bernitsas, M.M., “2-D Rans Vs. Experiments Of Flow Induced Motions Of Multiple Circular Cylinders With Passive Turbulence Control”, Proceedings of the 31st OMAE 2013 Conf., Paper #10911, Nantes, France, June 9-14, 2013.
Recent Presentations
28. Bernitsas, M.M., “Extracting Energy from Vortex-Induced Vibrations in the Marine Environment”, SNAME, Great Lakes Great Rivers Section, invited presentation, Ann Arbor, Michigan, September 23, 2009.
29. Bernitsas, M.M., “VIVACE: A New Concept for Harnessing Hydrokinetic”, Florida Energy Systems Consortium, Tampa, Florida, September 30, 2009.
30. Bernitsas, M.M., “VIVACE: A New Concept for Harnessing Hydrokinetic Energy even from Slow Currents”, Oakridge National Laboratory, May 21, 2010.
31. Bernitsas, M.M., “Enhancement of Flow Induced Motions for Harnessing Hydrokinetic Energy in an Environmentally Compatible Way”, Invited Seminar by the University of Texas at Austin, October 28, 2010.
32. Bernitsas, M.M., “Enhancement of Flow Induced Motions for Harnessing Hydrokinetic Energy in an Environmentally Compatible Way”, Distinguished Energy Lecture Series, Center for Clean Energy Engineering, University of Connecticut, November 11, 2010.
33. Bernitsas, M.M., “Enhancement of Flow Induced Motions for Harnessing Hydrokinetic Energy in an Environmentally Compatible Way”, Warren Lecture Series, University of Minnesota, St. Antony Falls Laboratory, February 4, 2011.
34. Bernitsas, M.M., “Enhancement of Flow Induced Motions for Harnessing Hydrokinetic Energy in an Environmentally Compatible Way”, Dow-Corning Technical Exchange Society, Apple Mountain Conference Center, Midland, February 10, 2011.
35. Bernitsas, M.M., “The VIVACE Converter: Enhancement of Flow Induced Motions for Harnessing Hydrokinetic Energy in an Environmentally Compatible Way”, Marine and Hydrokinetic Device Modeling Workshop, National Wind Technology Center, Boulder CO, March 1, 2011.
36. Bernitsas, M.M., “Enhancing Flow Induced Motions to Harness Hydrokinetic Energy in an Environmentally Compatible Way”, Saturday Morning Physics, University of Michigan, March 12, 2011.
37. Bernitsas, M.M., “Enhancing Flow Induced Motions to Harness Hydrokinetic Energy in an Environmentally Compatible Way”, University of California Berkeley, April 29, 2011.
38. Kim E.S., Bernitsas M.M., Raghavan A.K., “Multi-Cylinder Flow Induced Motions: Enhancement by Passive Turbulence Control at 28,000<Re<120,000,” Proceedings of the 30th OMAE 2011 Conf., Paper #49405, Rotterdam, The Netherlands, June 19-24, 2011.
39. Park H.R., Bernitsas M.M., and Kumar, R.A., “Using the Map of Passive Turbulence Control to Flow Induced Motions to Suppress Circular Cylinder Motion at 31,000<Re<120,000,” Proceedings of the 30th OMAE 2011 Conf., Paper #50302, Rotterdam, The Netherlands, June 19-24, 2011.
40. Chang C.C., Bernitsas M.M., “Hydrokinetic Energy Harnessing Using the VIVACE Converter with Passive Turbulence Control”, Proceedings of the 30th OMAE 2011 Conf., Paper #50290, Rotterdam, The Netherlands, June 19-24, 2011.
41. Wu W., Bernitsas M.M., Maki, K.J., “RANS Simulation vs. Experimental Measurements of Flow Induced Motion of Circular Cylinder with Passive Turbulence Control at 30,000<Re<120,000,” Proceedings of the 30th OMAE 2011 Conf., Paper #50293, Rotterdam, The Netherlands, June 19-24, 2011.
42. Bernitsas, M.M., “Enhancing Flow Induced Motions to Harness Hydrokinetic Energy in an Environmentally Compatible Way”, NSF-ONR Workshop on USA-Brazil collaboration in Ocean Engineering, COPPE-Universidade Federal do Rio de Janeiro Brazil, August 17, 2011.
43. Bernitsas, M.M., “Enhancing Flow Induced Motions to Harness Hydrokinetic Energy”, University of Minnesota, Saint Anthony Falls Laboratory, NSF Workshop, October 6, 2011.
44. Bernitsas, M.M., “The VIVACE Converter: Enhancing Flow Induced Motions to Harness Hydrokinetic Energy in an Environmentally Compatible Way”, University of Miami, November 8, 2011.
45. Bernitsas, M.M., “Enhancing Flow Induced Motions to Harness Hydrokinetic Energy in an Environmentally Compatible Way”, University of Maine, November 9, 2012.
Mass media
The media and the public at large are enthralled with the promise of the VIVACE Converter being developed by Vortex Hydro Energy and the Marine Renewable Energy Laboratory of the University of Michigan. The energy converter has been widely covered by dozens of news organizations including many major print, broadcast, and web outlets. In recent years it has been featured in U.S. News & World Report, Popular Mechanics, Discover Channel, and MIT’s Technology Review, as well as on the front page of the Detroit Free Press. It was the cover story of the Mechanical Engineer, the official publication of ASME in April 2010. Popular technology blogs Engadget, and Gizmodo highlighted the technology in 2008, as did the Huffington Post, the online edition of Wired magazine, The Engineer in the UK, June 2010, the National Academy of Engineering Website, and several more. Detroit’s Fox TV news affiliate did an extensive story about the technology in 2009. It was also shown and mentioned in a 2009 National Geographic Earth Day television special. A YouTube video the University of Michigan News Service produced about VIVACE has been viewed more than 52,000 times – making it one of the top three most watched U-M News Service videos of all time. These news stories are linked below.
- National Academy of Engineering Website: “Hydropower Anywhere”; March 27, 2011
http://www.nae.edu/Activities/Projects/20730/20186/43331.aspx
- U.S. News & World Report: “Wave Power Could Reduce Dependency on Oil”; May 28, 2010
http://www.usnews.com/news/energy/articles/2010/05/28/wave-power-could-reduce-dependency-on-oil–
- Mechanical Engineering, ASME: “Out of the Vortex”, cover story; April 2010
http://memagazine.asme.org/Articles/2010/April/Out_Vortex.cfm
- Popular Mechanics: “Can Fish Teach us to Make Hydropower in Calm Waters?”; December 18, 2009
http://www.popularmechanics.com/science/energy/hydropower-geothermal/4308687?click=main_sr
- National Geographic: “Earth Report: State of the Planet 2009”; April 22, 2009
http://channel.nationalgeographic.com/series/earth-day/4246/Overview#tab-Videos/06585_00
- Discover:” The Weirdest New Source of Alternative Energy: Underwater Vibrations”; March 2009
- Engadget: “VIVACE generates big power from small currents”; December 3, 2008
http://www.engadget.com/2008/12/03/vivace-generates-big-power-from-small-currents/
- MIT Technology Review: “A New Twist on Hydropower”; December 3, 2008
http://www.technologyreview.com/energy/21749/page1/
- Huffington Post: “Scientists: Revolutionary Device Can Harness Ocean Currents To Power The World”; November 29, 2008;
http://www.huffingtonpost.com/2008/11/29/scientists-revolutionary_n_147143.html
- Gizmodo: “UMich VIVACE Hydropower System Makes Energy From Slow Currents”; Nov. 26, 2008
http://gizmodo.com/5099080/umich-vivace-hydropower-system-makes-energy-from-slow-currents
- Wired: “Tapping the Vortex for Green Energy”; October 28, 2008
http://www.wired.com/wiredscience/2008/10/hidden-vortex-i/
- Environmental Health Perspectives: “Blue Power, Turning Tides into Electricity”
December 2007 |Volume 115 | Number 12.
- The Engineer, UK: “Hydrokinetic Power”; November 25, 2008 and June 2010.
http://www.theengineer.co.uk/news/hydrokinetic-power/309142.article
- University of Michigan News Service: “A new renewable energy concept”; November 24, 2008