1. Large-Scale Wind/Marine Turbines: State-of-the-Art & Current Challenges


    from ISR at UMD / Added

    127 Plays / / 0 Comments

    Yin Lu (Julie) Young Associate Professor Naval Architecture and Marine Engineering University of Michigan Ann Arbor, Mich. Host Armand Makowski Abstract Global climate change and depletion of fossil fuels both suggest an urgent need for clean, renewable energy. Currently, wind energy is more cost-effective than ocean energy due to active research and development over the last fifty years, but we are only beginning to explore ocean energy resources. This presentation will begin by introducing the various forms of ocean energy conversion systems with emphasis on marine turbines, which could be used to extract energy from tides, river currents, and ocean currents. The physics governing wind and marine turbines are similar. They both extract energy from the surrounding flow, and they both can be analyzed under incompressible flow assumptions. In addition, both hydrodynamic and structural dynamics need to be carefully considered in the design and analysis of wind and marine turbines. In this seminar, we will present a fully coupled, 3-D, transient fluid-structure interaction simulation method for analysis and design of large-scale marine turbines with consideration for spatially varying flow, fluid cavitation, structural stresses and deformations. Although the focus is on marine turbines, the method is also applicable for wind turbines. We will also discuss current state-of-the-art concepts, including the use of bend-twist coupling to enhance energy capture, delay cavitation inception, and extend the fatigue life of marine turbines. Finally, we will discuss current design challenges, including scaling issues, hydroelastic instabilities, power control issues, and system reliability. Biography Dr. Young is an Associate Professor at the Department of Naval Architecture and Marine Engineering at the University of Michigan. Prior to joining Michigan, she was an Assistant Professor at the Department of Civil and Environmental Engineering at Princeton University. Prof. Young received her Ph.D. from the University of Texas at Austin in 2002. She is the recipient of the ONR Young Investigator Award and the Princeton University Rheinstein SEAS Junior Faculty Award in 2005. She also received the UPS Visiting Professorship from Stanford University in 2008, and was appointed as a Senior ONR-ASEE Faculty Fellow at Naval Surface Warfare Center, Carderock Division in 2009. Prof. Young has written over a hundred journal and conference papers in the area of fluid-structure interactions related to marine and coastal structures. She is also currently the Society of Naval Architecture and Marine Engineering (SNAME) representative on the United States National Committee on Theoretical and Applied Mechanics (USNC/TAM).

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    • William H. Webb & Webb Institute


      from Webb Institute / Added

      65 Plays / / 0 Comments

      Richard Harris's lecture about William H. Webb and the creation of Webb Institute. Lecture was for the Nassau County Historical Society and took place on January 29, 2012 at Webb Institute.

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      • Domestic & Foreign Policy Pressures on America's Global Leadership


        from Webb Institute / Added

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        Dr. Mark Meirowitz delivers his lecture on the current policies that are affecting America and it's citizens.

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        • The building of my model yacht as part of a B(eng) in Yacht and Powercraft Design in 2013


          from Johny Fluhrer / Added

          16 Plays / / 0 Comments

          This is a short(ish) video highlighting the stages in the building process and sailing footage of my model yacht LITTLE RIPPER. She was design as part of a B(eng) in Yacht and Powercraft Design at the Southampton Solent University in 2013

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          • Prepared for the oceans - Maritime educations at Chalmers


            from Chalmers Univ. of Technology / Added

            3,491 Plays / / 0 Comments

            Chalmers University of Technology provides the shipping industry with well-educated, trained personnel for all positions. With a degree from Chalmers, our students will become a great asset to their employers from the onset.

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            • University of Washington: Human Powered Submarine Team


              from Nick Dayton / Added

              49 Plays / / 0 Comments

              Testing in Lake Washington Seattle, WA The University of Washington Human Powered Submarine Team has been active for over twenty years, and is an affiliate of the Mechanical Engineering Department. Every year the team designs and manufactures a submarine to compete at the International Submarine Races in Bethesda, MD. Operated by undergraduate students, both volunteer and credit-earning , the team incorporates an array of engineering disciplines, in order to develop the most effective submarine system possible.

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              • Chalmers Shipping and Marine Technology


                from Chalmers Univ. of Technology / Added

                1,305 Plays / / 0 Comments

                Shipping and marine technology conducts research and development of the latest technologies for propulsion and navigation of ships. We train shipbuilders, master mariners, marine engineers and shore personnel in shipping. VIDEO: Oddway

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                • SuRi refit


                  from SuRi / Added

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                  Produced by Michael Gregory

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                  • Lazzara Yachts Design


                    from Troy Raszka / Added

                    47 Plays / / 0 Comments

                    Art Director, Producer, Writer - Troy Raszka for Lazzara Yachts with Lazzara archival images and photography by David Monroe & Scott Pearson. Video Production and Editing by Tampa Digital Studios Director - Peter Guzzo Director of Photography - Erik Curtis Spokesperson - Christy Colley-Ronchetti

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                    • FEM Analisys


                      from Falletta Calogero / Added

                      198 Plays / / 0 Comments

                      FEM analysis is widely used in structure optimization to ensure the highest stiffning and strengthening and avoid undesired vibration. CFD is widely used in hull fairing and appendages optimization.

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