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ocean renewable 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
Seminar: The Analysis of Macroalgae Biomass found around Hawaiʻi for Bioethanol Production
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesBrandon A. Yoza Stephen Masuntani University of Hawaiʻi Hawaiʻi Natural Energy Institute According to the Hawaii Invasive Species Organization, invasive algae cost the State of Hawaii in excess of $20 million annually. The primary goal of our research is to provide information that could be used to support invasive marine algae control efforts through the recycling of unused biomass wastes collected during reef clean-ups by producing valuable products such as renewable fuels. A study initiated by HNEI to characterize different species of macroalgae found in the waters around Hawaii that have energy potential, specifically for the production of ethanol. Macroalgae
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: Exploring Offshore Marine Structures and Their Complex Dynamics: Current Status and Emerging Future Trends
POST 126 1680 East-West Road, Honolulu, HI, United StatesDr. Ersegun Deniz Gedikli Postdoctoral Fellow, NTNU Norwegian University of Science and Technology Technology, law and world’s appetite for more energy pushed oil-gas and renewable energy source exploration farther from the shores. Recent developments in this search have brought additional design challenges since these large offshore structures are more prone to the harsh environments around them. These factors require innovative approaches, in part because companies cannot operate in conventional ways in the Arctic region and in deep sea. This topic has critical importance to the offshore industry, particularly for the cost-effective development of new ocean structures such as floating offshore
Seminar: Fluid-Structure Interactions: From Fundamentals of Flow-induced Vibration to Applications in Energy Harvesting
Banafsheh Seyed-Aghazadeh, PhD Mechanical Engineering Department, University of Massachusetts, Dartmouth When a flexible or flexibly-mounted structure is placed in fluid flow, it can deform or oscillate. The deformation or oscillation of the structure will result in the change of flow forces, which in turn will result in the change of the structure’s deformation or oscillation. This is called a Fluid-Structure Interactions (FSI) problem and the oscillation is called Flow-Induced Vibration (FIV). FIV has significant implications for a number of physical systems, from aeolian harps to power transmission lines, towing cables, undersea pipelines, drilling risers and mooring lines used to stabilize
Experiments and Interpretation of Ice-Induced Vibrations of Offshore Structures
Dr. Torodd Nord Associate Professor Department of Ocean Operations and Civil Engineering Norwegian University of Science and Technology (NTNU) When drifting sea ice interacts with a structure, it may result in structural vibrations hence ice-induced vibration. With the potential to harm the structural integrity, secondary installations and operational safety, ice-induced vibration is an important problem that needs to be addressed in structural design. Since the first deployment of Arctic offshore platforms in Cook Inlet, Alaska in 1960s, extensive measurement campaigns have brought significant attention and knowledge to ice-induced vibrations. With today’s growing demand for renewable energy, the development of offshore
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: Wind-tracing Floating Offshore Structures
https://hawaii.zoom.us/j/93596087383Dr. Masoud Hayatdavoodi Associate Professor in Marine Hydrodynamics and Ocean Engineering School of Science and Engineering University of Dundee Dundee, Scotland, UK Offshore wind is a promising source of marine renewable energy, and one of the fastest-emerging energy alternatives. The UK and many other countries have invested heavily on wind energy, and it is expected that wind, along with solar, would be the two dominant forms of renewable energy soon. Main advantages of the offshore wind resources over near shore options include (i) access to more consistent and powerful wind, (ii) flexibility in site selections, (iii) elimination of visual
Seminar: Makai Ocean Engineering’s Subsea Technology Expertise
Holmes 247 2540 Dole Street, Honolulu, HI, United StatesHermann Kugeler Vice President of Business Development Makai Ocean Engineering Location Information: **this seminar will be held both in person (Holmes Hall 247) and over Zoom** Meeting ID: 960 4654 5799 Passcode: OREseminar https://hawaii.zoom.us/j/96046545799 Makai Ocean Engineering is a local high tech company, based in Waimanalo, HI for nearly 50 years, that has been a global pioneer for several technologies. In this lecture Makai will present on its work within the submarine cable, ocean renewable energy, and subsea research and development industries. Makai will also share its recent work on the development of an offshore seaweed farm design, and involvement
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,
The effect of water wave conditions and geometrical parameters of a fixed Oscillating Water Column Wave Energy Converter on its hydrodynamic performance
Watanabe 112 2505 Correa Rd, Honolulu, HI, United StatesDr. Ayrton Alfonso Medina Rodriguez Postdoctoral Researcher Applied Research Laboratory and Department of Ocean and Resources Engineering University of Hawaiʻi 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 In order to achieve maximum pneumatic power in an Oscillating Water Column (OWC) device, it is crucial for the chamber to operate as close to the resonance condition as possible. This means that the frequency of the incident wave must match the resonant frequency of the converter. This resonant frequency is influenced not only