Northwest National Marine Renewable Energy Center Presentation to Water Power Energy Efficiency and Renewable Energy US Department of Energy Northwest National Marine Renewable Energy Center: Tidal Energy by University of Washington Center Kickoff Meeting Corvallis, Oregon December 3, 2008

Northwest National Marine Renewable Energy Center Philip C. Malte Professor of Mechanical Design Department of Mechanical Engineering University of Washington Interim Co-Director Northwest National Marine Renewable Energy Center

Northwest National Marine Renewable Energy Center Research Interests: energy systems, renewable energy, hydrokinetics, alternatives fuels. NNMREC Role: project coordination and development Rules and concepts for TISEC. Hydrokinetic concepts and applications.

Northwest National Marine Renewable Energy Center WORK PLAN Phase 1Phase 2Phase 3 Device & Array Optimization Optimized turbine depth. 1-D modeling: flow redirection. Wake modeling. Flume build. 3-D modeling: flow redirection. Flume experiments. Concepts & rules reported. Mobile Testing Admiralty Inlet measurements. Methodology. Instrumentation. Continuation of measurements. Refinement of instrumentation. Transition of mobile testing suite to new sites Model calibration Environment Impacts Modeling 1-D model app to impact of power extraction. 3-D model calibration 3-D model extended to baroclinic response. 3-D model refined, applied to impact of power extraction. Materials for Reliability & Survivability Main activity starts in year 3. Assessment of composite materials for salt- water apps. Structural design tradeoffs. Control of bio- fouling/corrosion.

Northwest National Marine Renewable Energy Center UW Partners

Northwest National Marine Renewable Energy Center Mitsuhiro Kawase Associate Professor, Physical Oceanography School of Oceanography University of Washington

Northwest National Marine Renewable Energy Center Research interests: numerical and theoretical modeling of ocean and estuarine fluid dynamics and circulation; observation and numerical modeling of circulation and water quality in Puget Sound, Washington. NNMREC Role: environmental impacts modeling; also involved in study of device / array optimization: 3-D modeling of impact of power extraction at local and estuarine scales Turbine depth optimization 3-D modeling of flow redirection

Northwest National Marine Renewable Energy Center Reduction in tidal range can permanently expose/submerge tidal flats, altering nearshore habitats Reduction in kinetic energy of flow and mixing can slow down flushing of basins, affecting oxygen levels, water quality and pollutant dispersal Hood Canal Salmon Enhancement Group Environmental Footprints of Tidal Power Extraction Devices

Northwest National Marine Renewable Energy Center Computational Facilities and Resources Hardware Linux cluster (“Pendon”) with 164 computational cores Eight-core workstations (Dell PowerEdge, Mac Pros) Access to NSF TeraGrid Software Models / CFD codes –SUNTANS –FLUENT –ROMS, POM Programming environment –Linux, Mac OS X, Intel C/Fortran compiler, Message Passing Interface Analysis / Visualization –Matlab –Virtual Puget Sound

Northwest National Marine Renewable Energy Center Surface currents in the SUNTANS model of Puget Sound / San Juan Islands Admiralty Inlet Tacoma Narrows Deception Pass Rosario Strait and Guemes Channel

Northwest National Marine Renewable Energy Center Alberto Aliseda Assistant Professor Department of Mechanical Engineering University of Washington

Northwest National Marine Renewable Energy Center Research interests: turbulent flows, particle dynamics, sedimentation, air-sea interactions, experimental techniques NNMREC Role: device and array optimization; turbine wake modeling from numerical simulations and experiments Single turbine wake structure Multiple turbine interference; effect of confinement and spacing rules

Northwest National Marine Renewable Energy Center UW Facilities for modeling and wake studies: Wave-Current Flume: Experimental studies of tidal turbine wakes. Flume being developed with UW funds. Computer Cluster: Parallel simulations of tidal turbine wakes using commercial software package (Fluent).

Northwest National Marine Renewable Energy Center James Riley PACCAR Professor of Engineering Department of Mechanical Engineering University of Washington

Northwest National Marine Renewable Energy Center Research interests: fluid dynamics, especially turbulence, density-stratified flows, boundary layers, wakes, computational methods; renewable energy NNMREC Role: Wake effects study and modeling Turbine model for SUNTANS code.

Northwest National Marine Renewable Energy Center Jim Thomson Oceanographer, Applied Physics Laboratory (University Affiliated Research Center) University of Washington

Northwest National Marine Renewable Energy Center NSF & ONR Research: coastal physics, field measurements NNMREC Role: mobile testing for tidal power Instrumentation package for on site evaluations Survey optimization and methods Standardization for resource and device assessment

Northwest National Marine Renewable Energy Center APL-UW facilities Machine shop: Design Fabrication Testing R/V Jack Robertson: Surveys Deployments Recoveries

Northwest National Marine Renewable Energy Center APL-UW equipment

Northwest National Marine Renewable Energy Center Brian Polagye Department of Mechanical Engineering University of Washington

Northwest National Marine Renewable Energy Center Tidal In-Stream Research: Far-field environmental effects of energy extraction Resource assessments, site characterization, and device reviews NNMREC Role: Instrumentation package and methodology for mobile testing 1D modeling of flow redirection and impact of power extraction 3D modeling

Northwest National Marine Renewable Energy Center Mark E. Tuttle Professor and Chair Department of Mechanical Engineering Director Center on Advanced Materials in Transport Aircraft Structures University of Washington

Northwest National Marine Renewable Energy Center Research Interests: Advanced composite materials and structures; optimal composite structural designs; long-term durability of composites; adhesive bonding. NNMREC Role: Composites for use in tidal energy systems Identification of commercial composite material systems that minimize bio-fouling and corrosion Estimation of long-term durability effects due to saltwater exposure Studies of composite structural design options Fabrication and testing of prototype composite structures

Northwest National Marine Renewable Energy Center Facilities Available: ● Materials characterization labs/equipment (Differential Scanning Calorimetry, Thermal Gravimetric Analysis, Optical or Scanning Electron Microscopy, X-ray Diffraction, Atomic Force Microscope, etc) ● Composite structural fabrication equipment (hot-press, autoclave, RTM, diamond-wheel machining, abrasive water-jet machining, etc) ● Structural testing equipment (Universal test frames, hydraulic fatigue frames, multi-channel data acquisition systems, specialized composite test fixtures, etc) ● Commercial finite-element codes suitable for use in composite structural design and analysis (Ansys, Abaqus, etc)