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
- Journal Article:
Arevalo et al.
The power fluctuations produced by electric vehicles represent a drawback in large-scale residential applications. In addition to that, short power peaks could pose a risk to the stability of the electrical grid. For this reason, this study presents a feasibility analysis for a residential system composed of electric vehicle chargers. The objective is focused on smoothing the power…
- Journal Article:
Niebuhr et al.
Hydrokinetic turbine deployment in inland water reticulation systems such as irrigation canals has potential for future renewable energy development. Although research and development analysing the hydrodynamic effects of these turbines in tidal applications has been carried out, inland canal system applications with spatial constraints leading to possible blockage and backwater effects…
- Journal Article:
Awandu et al.
Energy accessibility, reliability and availability are key components of improved quality of life and human development in all spheres. As the United Nations’ SDG 7 calls for access to electricity for all by 2030, Africa still has a wide gap to fill as the statistics show that 85% of the population that will not have access to electricity is in Africa. As the world tries to wean itself off non…
- Journal Article:
Fouz et al.
Hydrokinetic energy can contribute to diversify and decarbonise the energy mix in many coastal regions, in particular estuaries. These are typically areas of high environmental value and with intense socioeconomic activity. The aim of this work is to provide a comprehensive methodology for selecting the optimum locations for hydrokinetic energy exploitation, by considering all the relevant…
- Journal Article:
Dorella et al.
The effect of diffuser-enhanced flow on the energy extraction performance of hydrokinetic turbines is widely reported in the literature. In this context, this work combines automatic scripting for geometry construction and meshing, together with a simulation-based approach using particle-swarm optimization with Computational Fluid Dynamics (CFD) to design an augmented hydrokinetic river…
- Journal Article:
Badawy et al.
River current energy is regarded as one of the most environmentally friendly sources of electricity. Because it doesn't produce power by holding water in a reservoir and causing a height differential, a river current (or hydrokinetic) device is not a dam. Turbines placed inside rivers immediately harvest the kinetic energy of flowing water. Like Egypt's river Nile can be used to study this…
- Journal Article:
Wang et al.
Hydrokinetic power as a clean renewable energy has been aroused a widespread concern. Horizontal axis turbines are widely used in the field of tidal and river current energy power generation, but their internal flow loss characteristics have not been fully revealed. In this paper, a micro horizontal axis river ducted turbine is taken as the research object, and the flow loss characteristics of…
- Report:
Igiugig Village Council
The Igiugig Village Council (IVC) installed and operates a marine energy device, the ORPC RivGen® Power System, in the Kvichak River in Igiugig, Alaska. As required by IVC’s 2019 FERC license to operate the power system, a Fish Monitoring Plan was developed and implemented for collecting images from underwater cameras to assess the interaction of sockeye salmon with the RivGen Power System.…
- Journal Article:
Giannini et al.
The worldwide river and tidal hydrokinetic power potential is considerable. Harnessing such potential could allow the generation of a significant amount of sustainable electricity for local uses. To the present, most studies on hydrokinetic power have focused on large-scale commercial technology development, large tidal farms planning, and high-intensity resources assessment. Reduced attention…
- Presentation:
Browning et al.
Many remote communities in Alaska have significant hydrokinetic resources. However, the remote locations make collecting large amounts of resource data challenging and costly. Through accurately up sampling hourly ADCP data, we are seeking ways to faithfully reproduce annual energy estimates for velocity time series with high enough temporal resolution to be useful for grid-modeling tools.…
- Presentation:
Duvoy et al.
We introduce a methodology for a comprehensive characterization of river flows from transects surveyed at different times over near coincident transects from acoustic Doppler current profiler (ADCP) data acquired from a moving vessel.
The ADCP measurements are first rotated from East and North velocities into primary and secondary flows that are projected onto a grid of points on an…
- Presentation:
Polagye et al.
When the swept area of an array of current turbines occupies a substantial fraction of a channel’s cross-section, their unit performance is augmented. In moderate confinement, power coefficients for individual turbines may exceed the Betz-Lanchester-Zhukowsky limit, and, in practice, exceed unity by drawing on both kinetic and potential energy embodied in the flow. This effect has long been…
- Presentation:
Loeffler et al.
The BladeRunner Energy hydrokinetic turbine A kw-scale prototype of the BladeRunner system was tested at the Tanana River Test Site in Nenana, AK in the fall of 2021 and the summer of 2022. The BladeRunner hydrokinetic turbine uses a flexible torsional cable to connect a submerged trailing rotor to a floating generator housing that is supported by a single mooring line. The BladeRunner design…
- Presentation:
Gunawan et al.
Although hydrokinetic turbines offer many benefits their installation and operation also present challenges. Similar to other riverine structures, a key issue facing the hydrokinetic structures is the trapping of sediment and debris (organic and non-organic). This issue impacts the financial feasibility of projects as well as posing environmental concerns. The trapping of sediment and debris…
- Journal Article:
Shashikumar and Madav
In the present paper, three-dimensional numerical simulations were carried out to examine the influence of the overlap ratio between the two straight edges on the advancing and returning blades of the novel V-shaped rotor blade profiles using the sliding mesh technique. The performance parameters were computed with respect to the tip speed ratio. The findings show that the coefficient of…
- Journal Article:
Shamsuddin et al.
Savonius turbines are practical for rivers with low speeds due to their simple design and good self-starting capabilities. Despite these advantages, real implementation is still limited due to their low power efficiency. However, the experimental studies are scarce as they mainly focus on power performance, neglecting the impact of materials exposed to the wind or water medium. Therefore, the…
- Journal Article:
Punys et al.
The primary aim of this research was to investigate and to substantiate available methodologies based on key hydrologic, hydraulic and geometric parameters of a river to derive the theoretical hydrokinetic (HK) power. To realize this aim, hydrological and hydraulic methods were applied for the second largest river in the country. For the hydrological evaluation of the hydrokinetic resource…
- Report:
Hasz Consulting and Whitestone Power and Communications
This report covers the development of the Poncelet Kinetics RHK100 Prototype. The work was completed by Hasz Consulting, LLC; CE2 Engineers, LLC; Energetic Drives, LLC; and Applied Power and Control all operating as subcontractors to Whitestone Power and Communications during the year from October 1, 2010 to September 23, 2011. As designed, the prototype is run-of-river instream energy…
- Journal Article:
Gauvin-Tremblay and Dumas
This study focuses on the interaction between the water free surface, the riverbed, and some Darrieus-type hydrokinetic turbines deployed in river flows. As turbines offer a resistance to the flow, they affect the upcoming velocity, which in turn affects their performance. The proximity of the neighboring deformable free surface or rigid bed may also influence their power extraction. In this…
- Journal Article: Abutunis et al.
Coaxial horizontal axis hydrokinetic turbine system: Numerical modeling and performance optimization
Hydrokinetic turbines extract energy from free-flowing water, such as river streams and marine currents. For river applications, the typical deployment location is highly space-constrained due to both the nature of the river (i.e., its natural width and depth) and the other usages of the river. Therefore, a modified design of a conversion device is desired to accommodate these space…
Displaying 1 - 20 of 145