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- Thesis:
Gwenter
Marine renewable energy is a continually growing topic of both commercial and academic research sectors. While not as developed as other renewable technologies such as those deployed within the wind sector, there is substantial technological crossover coupled with the inherent high energy density of water, that has helped push marine renewables into the wider renewable agenda. Thus, an ever…
- Thesis:
Xie
The traditional failure modes and effects analysis (FMEA) is a conceptual design methodology for dealing with potential failures. FMEA uses the risk priority number (RPN), which is the product of three ranked factors to prioritize risks of different failure modes. The three factors are occurrence, severity, and detection. However, the RPN may not be able to provide consistent evaluation of…
- Thesis:
Bosma
Ocean wave energy converter technology continues to advance and new developers continue to emerge, leading to the need for a general design, modeling, and testing methodology. This work presents a development of the process of taking a wave energy converter from a concept to the prototype stage. A two body heaving point absorber representing a generic popular design was chosen and a general…
- Thesis:
Bayoumi
Marine renewable energy sources are crucial alternatives for a sustainable development. The idea of generating electrical power from water waves has been realized for many years. In fact, waves are now considered as an ideal renewable energy source since a Wave Energy Converter (WEC) has no fuel cost and provides cleanly a high power density that is available most of the time. The third…
- Thesis:
Fleming
The work described in this thesis is concerned with the application of phase-averaging to experimental data obtained for a forward-facing bent-duct oscillating water column (OWC) wave energy converter. Experiments were performed on a three-dimensional model of the OWC in monochromatic waves. The research includes the development of new curve-fitting and ensemble-averaging phase-averaging…
- Thesis:
Giles
Over the past decade within the renewable energy sector a strong research and development focus has resulted in the growth of an embryonic tidal stream energy industry. Previous assessments of the tidal stream resource appear to have neglected shallow tidal flows. This resource located in water depths of 10-30m is significant because it is generally more accessible for energy extraction than…
- Thesis:
Kim
Vortex Induced Vibrations for Aquatic Clean Energy (VIVACE) Converter is a converter of marine hydro-kinetic (MHK) energy invented in the Marine Renewable Energy Lab (MRELab). It harnesses MHK from ocean currents. Using passive turbulence control, VIVACE maximizes and utilizes flow induced motion in the form of vortex induced vibration (VIV) or interference/proximity/wake/soft/hard galloping.…
- Thesis:
Da Costa Miranda
Due to an increasing concern and awareness about the effects of fossil fuel energy in the climate change, and an recent increased tension inside the geo-political climate of Europe, a new all-time high interest in alternative renewable energy technologies was reached. Although underdeveloped and understudied, the marine energy harvesting technology sector presents an extremely high potential.…
- Thesis:
Sjökvist
Surface gravity waves carry enormous amounts of energy over our oceans, and if their energy could be harvested to generate electricity, it could make a significant contribution to the worlds power demand. But the survivability of wave energy devices in harsh operating conditions has proven challenging, and for wave energy to be a possibility, peak forces during storms and extreme waves must be…
- Thesis:
Heavey
The aim of this thesis is to develop a combined analytical, computational and experimental methodology for characterisation and optimisation of the hydrodynamic performance of a novel vertical-axis tidal turbine concept. A primary objective is to develop experimentally validated, efficient, numerical predictive tools with the capability to allow the design and assessment of different turbine…
- Thesis:
Richardson
A multi-axis point absorber wave energy converter (MA-PAWEC) can be defined as a point absorber wave energy converter that absorbs energy from multiple modes of body motion using a power-take-off (PTO) system operating in multiple degrees of freedom. There is a lack of knowledge around whether MA-PAWECs could produce a lower cost of energy compared to the most common point absorber type, the…
- Thesis:
Fjermedal
Over the past few decades, the renewable energy industry has expanded offshore in response to the growing demand for clean and sustainable energy. Larger structures with greater power output and less visual disturbance from shore are some of the reasons that motivate the development. Floating energy systems such as offshore wind turbines and wave energy converters (WECs) offer significant…
- Thesis:
Shao
Wave energy has been recognized as a promising alternative to traditional energy sources due to its cleanliness and sustainability. To harness this energy, wave energy converters (WECs) are utilized. These WECs operate using a variety of working principles and are typically deployed in large numbers in the form of wave energy parks to generate electricity with high efficiency and low levelized…
- Thesis:
Kimball
A rising demand for macroalgae (or seaweed) has led researchers to seek out methods of increasing macroalgae aquaculture yields. Macroalgae is a food product, and may be used in biofuel, animal feed, and fertilizer. Applying upwelling technology to macroalgae aquaculture has been shown to increase biomass yield. A wave-powered upwelling device (or water pump) generates cold, nutrient-rich…
- Thesis:
Ayob
The wave energy converter (WEC) developed at Uppsala University is based on the concept of a heaving point absorber with a linear generator placed on the seafloor. The translator inside the generator oscillates in a linear fashion and is connected via a steel wire to a point absorbing buoy. The power production from this device is optimal when the translator’s oscillations are centered with…
- Thesis:
Chao
This study focus on the assessment of climate simulation variables by exploiting different bias correction methods and analysis the comparison of different bias corrected simulation. Because measured models need to generate high resolution input data, global and regional climate models are often distorted and have poor resolution. The purpose of this study is to find an accurate bias…
- Thesis:
Barancyk
In this study, the techno-economic implications of hybrid wave energy converter and offshore wind turbine farms are explored for a case-study site off the coast of Newport, Oregon. The correlation between wind and wave resources are measured via the Pearson ‘r’ method and found to be uncorrelated at the averaged annual scale with spikes in seasonal correlation and complementarity. A fixed…
- Thesis:
Palmlöf
In the current energy transition to reach a net zerocarbon scenario, the steel industry is one of the hardest sectors to abate, due to its high energy demand and the use of carbon for its synthesis. It has been proven that through changing the process of production, the carbon can be substituted with hydrogen, allowing a nearly fully eradication of the carbon emissions. However, the hydrogen…
- Thesis:
David
Understanding how wave energy converts (WECs) behave in arrays is crucial for the wave energy industry to develop commercial scale projects. This thesis offers insights on a variety of challenges that the wave energy industry is currently facing, including predicting coastal impacts, optimising arrays to maximise power absorption while minimising costs, and evaluating nonlinear effects on…
- Thesis:
Kumar
Renewable energy is a revolution in the field of power generation to ensure environment friendly alternatives to fossil fuels. Wave power is a huge source of renewable energy found in the ocean’s waves. In this research, the main objective is to extract maximum wave power from the near-shore waves in multiple degrees-of-freedom (DOF). In order to achieve this goal, a combination of design,…
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