This site-wide search returns results for all documents and events in Tethys Engineering, prioritizing the best matches. Partial word matches are returned (e.g. "engineer" finds "engineering"), but every entered term must be found. If you don't find any results, try reducing the number of words entered or removing special characters. Filters to the right can help narrow your search. Tethys Engineering features an integrated search with other marine renewable energy databases in PRIMRE - click the buttons below "Showing Results for" to search other integrated databases.
Showing Results for
- Conference Paper:
Naufal et al.
This paper provides a preliminary assessment of potential energy of tidal currents in the Lembeh Strait, North Sulawesi. Using two and three dimensional ocean hydrodynamic model, the assessment was done. A nesting method has been applied in order to simulate tidal currents in the Sulawesi Sea and the Lembeh Straits. Three dimensional simulation results at the Lembeh straits was validated using…
- Journal Article:
Zhang et al.
This study presents results from laboratory experiments to investigate the wake structure in the lee side of a scaled three-bladed horizontal axis tidal stream turbine with a mono-pile support structure. Experiments are conducted for a range of approaching flow velocity and installation height of rotor. Analysis of the results shows that bed shear stress increases with the increase of…
- Journal Article:
Thandayutham and Samad
A marine current turbine (MCT) that extracts energy from ocean currents should be hydrodynamically and structurally stable to generate uninterrupted power. This can be achieved through the shape optimization of MCT blades. In this work, a horizontal axis MCT of 0.8 m diameter was optimized through multi-fdelity numerical approach. The design parameters such as blade pitch angle (θ)…
- Journal Article:
Gotelli et al.
To study the performance and environmental impacts of marine hydrokinetic (MHK) turbine arrays, we carry out an investigation based on laboratory experiments and numerical models able to resolve the dynamics of turbulent wake interactions and their effects on the river bed. We investigate a scaled Sabella D10 mounted on a mobile bed for a single and two aligned turbines, measuring the flow…
- Journal Article:
Adeogun et al.
Hydrokinetic energy system is the process of extracting energy from rivers, canals and others sources to generate small scale electrical energy for decentralized usage. This study investigates the application of soil and water assessment tool (SWAT) in geographical information system (GIS) environment to evaluate the theoretical hydrokinetic energy potentials of selected rivers (Asa, Awun and…
- Conference Paper:
Henry et al.
Wave impacts on an Oscillating Wave Surge Converter are examined using experimental and numerical methods. The mechanics of the impact event are identified experimentally with the use of images recorded with a high speed camera. It is shown that it is the device which impacts the wave rather than a breaking wave impacting the device. Numerical simulations using two different approaches are…
- Journal Article:
Niebuhr et al.
The hydrokinetic industry has advanced beyond its initial testing phase with full-scale projects being introduced, constructed and tested globally. However primary hurdles such as reducing the cost of these systems, optimizing individual systems and arrays and balancing energy extraction with environmental impact still requires attention prior to achieving commercial success. The present study…
- Journal Article:
Toniolo
Two-dimensional hydrodynamic simulations were performed on a monthly basis along 2.5 km of the Kvichak River near Igiugig in southwest Alaska, USA, to estimate flow conditions and to assess the hydrokinetic potential of the river reach. Instantaneous power density function along the computational domain was calculated. Study results indicate that two areas may be suitable for deploying…
- Journal Article:
Dawson et al.
A study is being undertaken in the United Kingdom of means of developing the potential of the large wave-energy resource around the coast, in particular, that to the west facing the Atlantic. Derivation of the mean annual energy to be expected involved knowledge, not only of the wave climates, conversion efficiency characteristics of the proposed devices and of the power transmission system,…
- Journal Article:
Reeve et al.
In this paper a generic methodology is presented that allows the impacts of climate change on wave energy generation from a wave energy converter (WEC) to be quantified. The methodology is illustrated by application to the Wave Hub site off the coast of Cornwall, UK. Control and future wave climates were derived using wind fields output from a set of climate change experiments. Control wave…
- Conference Paper:
Duckers
The Clam is an offshore toroidal structure housing 12 air cells which are sealed from the sea by means of reinforced rubber membranes. For the desirable membrane lifetime of between five and ten years to be realised there are a number of conditions which must be met, including large vertical strength together with horizontal elasticity which permits flexibility without buckles and kinks. To…
- Journal Article:
Ravindran and Koola
Ocean energy is one of the important forms of renewable energy. Wave energy has received considerable attention in the recent past. In India the Department of Ocean Development (DoD), Government of India, has sponsored wave-energy research at the Ocean Engineering Centre of the Indian Institute of Technology, Madras.
- Journal Article:
Burrows et al.
This paper describes the substantial potential of tidal barrage solutions for renewable energy generation in the UK. It demonstrates that installations on as few as eight major estuaries should be capable of meeting at least 10% of present electricity demand, and possibly significantly more, employing fully proven technology. This should be achievable, under favourable UK Treasury discount…
- Journal Article:
Gorji-Bandpy et al.
Due to increasing concern over global climate change, many policy makers worldwide have accepted the importance of reducing greenhouse gas emissions, in particular from the electricity industry. Tidal generation has a significant advantage over many other forms of renewable generation as it is almost perfectly forecastable over long time horizons. Thus, incorporating tidal generation into an…
- Conference Paper:
Parmeggiani et al.
At the present pre-commercial phase of the wave energy sector, device developers are called to provide reliable estimates on power performance and production at possible deployment locations. The EU EquiMar project has proposed a novel approach, where the performance assessment is based mainly on experimental data deriving from sea trials rather than solely on numerical predictions. The study…
- Conference Paper:
Folley et al.
The Oscillating Wave Surge Converter (OWSC) is a novel shoreline or near-shore wave energy converter. The concept has developed from an analysis of the performance of the LIMPET shoreline oscillating water column. This analysis showed that the hydrodynamics of shoreline wave energy converters are highly non-linear and that they have a qualitatively different response to similar devices that…
- Journal Article:
Lowe et al.
In this study we investigated the capabilities of the mesh-free, Lagrangian particle method (Smoothed Particle Hydrodynamics, SPH) to simulate the detailed hydrodynamic processes generated by both spilling and plunging breaking waves within the surf zone. The weakly-compressible SPH code DualSPHysics was applied to simulate wave breaking over two distinct bathymetric profiles (a plane beach…
- Report:
Marine Renewables Industry Association (MRIA)
Ireland has an unprecedented opportunity to build a position of strength as a supply chain to the world- wide ocean energy industry. The policy landscape – including required legislation and provision of a policy framework for ocean energy- is moving in a positive direction but a greater sense of urgency is required. Most importantly, Government is negotiating an export framework with the…
- Journal Article:
Mauro et al.
The idea of investigating the fluid dynamic behavior of a ducted Savonius wind turbine derives from the research about the improvements of Oscillating Water Column Wave Energy Converters in which the air is forced to flow back and forth inside a duct. The Savonius rotors appeared to be very suitable for this kind of applications for many reasons. Indeed, these rotors are very simple to built,…
- Journal Article:
Rodríguez et al.
The optimization of OWC devices has deserved much attention in the last few years. However, despite of this intense research activity, the most suitable turbine for OWC applications is still under debate. Recently, the twin-turbine configuration, where two unidirectional turbines are employed simultaneously, has emerged as a promising design. Although axial turbines are typically employed for…
Displaying 121 - 140 of 9225