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wave energy
PhD Defense: Study of wave interaction with vertical piles integrated with oscillating water columns
POST 601 1680 East West Road, Honolulu, HI, United StatesConghao Xu Ocean wave energy is one form of abundant ocean renewable and clean energy sources. However, a host of challenges including construction and maintenance costs and structural reliability have prevented the large-scale commercial application of ocean wave energy converters (WECs). Integrating of WECs with shore-protection structures may significantly reduce the costs associated with wave energy utilization. One such integration is vertical piles integrated with oscillating water columns (OWCs), which can help achieve costs sharing and overcome the cost hurdles facing the wave energy industry. This study presents a study investigating the performance of an integration of circular piles with
ORE Capstone on Wave Energy Conversion
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesBradley Beeksma Sitthichat Sukphol Kei Manabe Nicholas Ulm The potential of a small-scale wave energy test site at the Kilo Nalu nearshore reef observatory is analyzed. Climate change concerns and Hawaii’s mandate for 100% renewable energy dependence by 2045 has led to a push for increased development of wave energy conversion (WEC) technology. Prototype testing is a crucial step in the development process to validate and evaluate designs of wave energy convertors. As testing full-scale devices in field conditions requires large capital investment due to manufacturing and deployment costs, preliminary testing is usually performed with scaled-down prototypes in a wave
Seminar: The Fascinating Problem of Harnessing Energy from Ocean Waves
POST 723 1680 East-West Road, Honolulu, HI, United StatesDr. Adi Kurniawan Assistant Professor Department of Civil Engineering, Aalborg University, Denmark Harnessing energy from ocean waves in a cost-effective manner remains one great unsolved problem of our time. While great strides toward solving this problem were made in the 1970s to early 1980s, since then progress has been slow. What have we gained from many years of research into this fascinating subject, and how can we move forward? This talk will give an overview of the history and theory behind ocean wave energy conversion, as well as outline some research directions toward identifying cost-effective solutions to harness wave energy
Seminar: Investigating Helmholtz Mode for Marine Hydro-Kinetic Energy
Sakamaki B101 2530 Dole St, Honolulu, HI, United StatesReza Ghorbani, PhD Associate Professor Department of Mechanical Engineering University of Hawai'i, Mānoa Short relatively deep tidal basins, which are connected to the open sea by a narrow strait, may exhibit either an amplified (resonant), or damped (choked) response to the tide at the entrance. The sole mode added to this system when the basin communicates with a tidal sea through a narrow strait is the pumping or Helmholtz mode, characterized by a periodic mass exchange through the narrows and associated spatially uniform elevation change within the basin. This is generally also the most energetic mode of such a basin.
Seminar: Recent Operations, Findings, and Plans at the Wave Energy Test Site (WETS)
Patrick Cross, PhD Senior Project Specialist Hawai'i Natural Energy Institute The U.S. Navy’s Wave Energy Test Site (WETS) has been operational in its final configuration since June 2015. The site has now hosted four separate wave energy converter (WEC) deployments - two each of two different WECs. Several other commercial WEC deployments are planned over the next few years. HNEI provides research and logistics support to WETS, including independent device performance monitoring, environmental measurements, site infrastructure inspection and maintenance, outfitting of a site-dedicated vessel, liaison with companies planning tests, and other support as needed by the Navy sponsor. In this
Seminar: ORE Student Presentations
Andi Erickson, Nicholas Ulm, Giannicola Tumino Di Costanzo, Julianne Kalksma, Shijie Huang, Kei Manabe, Cameron Morrow, David Leyva, Stefan Mrozewski Nine ORE graduate students will present as part of our new ORE seminar session “Improving effective communication skills”. Each student will present their research work or interest in about 3 minutes to a targeted audience. Topics include: El Niño southern oscillation, powering blue economy, ultra-short base line, photography for coastal research, multi-flow simulation, detecting spinner dolphin clicks, analysis of mooring line fatigue, choosing appropriate buoys for long-term time-series analysis, and factors affecting underwater laser Transmission. The targeted audience ranges from
MS Plan A Defense: A fatigue analysis of the No-WEC mooring system at the U.S. Navy Wave Energy Test Site off Oʻahu, Hawaiʻi
Cameron Morrow Graduate Student Department of Ocean and Resources Engineering University of Hawai'i In order to reduce carbon emissions, there is a pressing need to look for alternative fuel sources. Energy created by renewable sources is the way of the future. One of the emerging renewable energy technologies is wave energy. The theoretical gross power generated from waves is 3.7 TW, but the estimated total net power is 3 TW. The Wave Energy Test Site (WETS), off the coast of Marine Corps Base Hawaiʻi, provides a unique location for the full-scale validation of Wave Energy Conversion (WEC) devices in the
Seminar: Experimental Findings of Fixed Oscillating Water Column Wave Energy Converter System through the Testing Expertise and Access for Marine Energy Research Program
https://hawaii.zoom.us/j/93596087383Nicholas Ulm PhD Student Department of Ocean and Resources Engineering University of Hawai'i at Mānoa Zoom Meeting Link: Meeting ID: 935 9608 7383 Passcode: OREseminar https://hawaii.zoom.us/j/93596087383 With a rising interest in blue economy applications of wave energy, a shift in the design process for wave energy converters needs to be considered for each alternate application. Autonomous underwater vehicle (AUV) docking powered by a wave energy converter (WEC) has been investigated over the past decade, but as separate technologies. Recent developments in the blue economy have brought the two technologies together in a proposed design of an underwater docking system for
Seminar: Hilo Bay Improvement Project: Environmental Parameters and Conceptual Designs – Part I
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesWyatt Burkley, Jon Chase, Gary Glass, Jesse Gray, Lauren Heslop, Kyle Pappas, Grant Peel, & Malia Selman ORE 783 Capstone Design Department of Ocean & Resources Engineering University of Hawai‘i at Mānoa Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 Students in the ORE 783 Capstone class have been working on the Hilo Bay Improvement Project. The purpose of the project is twofold: (1) to investigate the feasibility of adding an engineered breach or a wave energy converter into the Hilo breakwater to
Seminar: Hilo Bay Improvement Project: Preliminary Designs, Construction Methods, Permitting, and Cost Estimates – Part II
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesWyatt Burkley, Jon Chase, Gary Glass, Jesse Gray, Lauren Heslop, Kyle Pappas, Grant Peel, & Malia Selman ORE 783 Capstone Design Department of Ocean & Resources Engineering University of Hawai‘i at Mānoa Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 Students in the ORE 783 Capstone class have been working on the Hilo Bay Improvement Project. The purpose of the project is twofold: (1) to investigate the feasibility of adding an engineered breach or a wave energy converter into the Hilo breakwater to
Integrated modeling to support marine energy resource characterization and coastal resilience
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesDr. Zhaoqing Yang Chief Scientist Coastal Sciences Division Northwest National Laboratory Location Information **This seminar will be held both in person (Watanabe Hall 112) and over Zoom** Meeting ID: 961 6222 2366 Passcode: OREseminar https://hawaii.zoom.us/j/96162222366 This seminar will cover two major research areas carrying out in the Ocean Dynamics Modeling Group in PNNL 1) Marine energy resource characterization and 2) Coastal storm surge and resilience. Marine renewable energy can play an important role in mitigating climate change and enhancing national energy security. PNNL is leading the modeling effort in marine energy resource characterization including wave, tidal stream,
Seminar: Case Study of the Application of Wave Energy Converter Performance Metrics: Experimental Findings of the Fixed Halona Oscillating Water Column
Bilger Hall 150 2545 McCarthy Mall, Honolulu, HI, United StatesNicholas Ulm Ph.D. Student Department of Ocean and Resources Engineering University of Hawai’i at Mānoa Location Information **This seminar will be held both in person (Bilger Hall 150) and over Zoom** https://hawaii.zoom.us/j/95081858686 Meeting ID: 950 8185 8686 Passcode: OREseminar The study of oscillating water column (OWC)-type wave energy converters (WEC) has primarily focused on applications in the nearshore environment with an end use in residential power grids. This study examines the power performance of the Halona OWC geometry relative to different blue economy energy objectives that focus on providing power in the intermediate-water-depth environment. The method examines power performance through