scholarly journals Numerical modelling of hydrodynamics and tidal energy extraction in the Alderney Race: a review

2020 ◽  
Vol 378 (2178) ◽  
pp. 20190498
Author(s):  
Jérôme Thiébot ◽  
D. S. Coles ◽  
Anne-Claire Bennis ◽  
Nicolas Guillou ◽  
Simon Neill ◽  
...  
Keyword(s):  
Numerical Modelling ◽  
Three Dimensional ◽  
Energy Resource ◽  
Tidal Energy ◽  
Resource Assessment ◽  
Spatial Modelling ◽  
Optimization Techniques ◽  
Energy Extraction ◽  
Model Case ◽  
Eddy Simulation

The tides are a predictable, renewable, source of energy that, if harnessed, can provide significant levels of electricity generation. The Alderney Race (AR), with current speeds that exceed 5 m s −1 during spring tides, is one of the most concentrated regions of tidal energy in the world, with the upper-bound resource estimated at 5.1 GW. Owing to its significance, the AR is frequently used for model case studies of tidal energy conversion, and here we review these model applications and outcomes. We examine a range of temporal and spatial modelling scales, from regional models applied to resource assessment and characterization, to more detailed models that include energy extraction and array optimization. We also examine a range of physical processes that influence the tidal energy resource, including the role of waves and turbulence in tidal energy resource assessment and loadings on turbines. The review discusses model validation, and covers a range of numerical modelling approaches, from two-dimensional to three-dimensional tidal models, two-way coupled wave-tide models, Large Eddy Simulation (LES) models, and the application of optimization techniques. The review contains guidance on model approaches and sources of data that can be used for future studies of the AR, or translated to other tidal energy regions. This article is part of the theme issue ‘New insights on tidal dynamics and tidal energy harvesting in the Alderney Race’.

scholarly journals Modeling Assessment of Tidal Energy Extraction in the Western Passage

2020 ◽  
Vol 8 (6) ◽  
pp. 411
Author(s):  
Zhaoqing Yang ◽  
Taiping Wang ◽  
Ziyu Xiao ◽  
Levi Kilcher ◽  
Kevin Haas ◽  
...  
Keyword(s):  
Cross Sections ◽  
Numerical Models ◽  
Three Dimensional ◽  
Energy Resource ◽  
Field Measurements ◽  
Tidal Energy ◽  
Resource Assessment ◽  
Ocean Model ◽  
Energy Extraction ◽  
Technical Specifications

Numerical models have been widely used for the resource characterization and assessment of tidal instream energy. The accurate assessment of tidal stream energy resources at a feasibility or project-design scale requires detailed hydrodynamic model simulations or high-quality field measurements. This study applied a three-dimensional finite-volume community ocean model (FVCOM) to simulate the tidal hydrodynamics in the Passamaquoddy–Cobscook Bay archipelago, with a focus on the Western Passage, to assist tidal energy resource assessment. IEC Technical specifications were considered in the model configurations and simulations. The model was calibrated and validated with field measurements. Energy fluxes and power densities along selected cross sections were calculated to evaluate the feasibility of the tidal energy development at several hotspots that feature strong currents. When taking both the high current speed and water depth into account, the model results showed that the Western Passage has great potential for the deployment of tidal energy farms. The maximum extractable power in the Western Passage was estimated using the Garrett and Cummins method. Different criteria and methods recommended by the IEC for resource characterization were evaluated and discussed using a sensitivity analysis of energy extraction for a hypothetical tidal turbine farm in the Western Passage.

scholarly journals Tidal energy extraction in three-dimensional ocean models

2017 ◽  
Vol 114 ◽  
pp. 244-257 ◽  
Author(s):  
Alice J. Goward Brown ◽  
Simon P. Neill ◽  
Matthew J. Lewis
Keyword(s):  
Three Dimensional ◽  
Tidal Energy ◽  
Energy Extraction ◽  
Ocean Models

Wave and tidal energy resource assessment in Uruguayan shelf seas

2017 ◽  
Vol 114 ◽  
pp. 18-31 ◽  
Author(s):  
Rodrigo Alonso ◽  
Michelle Jackson ◽  
Pablo Santoro ◽  
Mónica Fossati ◽  
Sebastián Solari ◽  
...  
Keyword(s):  
Energy Resource ◽  
Tidal Energy ◽  
Resource Assessment ◽  
Shelf Seas

Effects of CFD parameter variation on Tidal Energy Resource Assessment

2012 ◽  
Author(s):  
Michael Lochinvar Sim Abundo ◽  
Chew Kok Hon ◽  
Martin Koh Wei Xiang ◽  
Oh Boon Kiat ◽  
Wilbur Tan Hong Huat
Keyword(s):  
Energy Resource ◽  
Tidal Energy ◽  
Resource Assessment ◽  
Parameter Variation

Numerical Simulation of Wind Distributions for Resource Assessment in Southeastern Eritrea, East Africa

2012 ◽  
Vol 134 (3) ◽  
Author(s):  
B. Lebassi-Habtezion ◽  
R. Van Buskirk
Keyword(s):  
Wind Energy ◽  
Red Sea ◽  
Monsoon Season ◽  
Three Dimensional ◽  
Energy Resource ◽  
Resource Assessment ◽  
Wind Fields ◽  
Energy Applications ◽  
Layer Flow ◽  
Marine Layer

We present the results of a simulation study of the wind energy resources of southeastern Eritrea. In this study, we simulate the three dimensional wind fields during typical, steady conditions of the Southern Red Sea southeast monsoon season. The simulations verify the existence of a low level jet (LLJ) contained within the highly stratified marine layer over the Southern Red Sea. The LLJ is caused by the channeling and the acceleration of marine layer flow as it passes through the strait of Bab el Mandeb on its way from the Indian Ocean to the Eastern Sahara. The LLJ extends from 12.5 deg to 14.5 deg N latitude in the Southern Red Sea and has peak velocities at 300–600 m elevation above the sea. Sea-land breezes advect the high speeds of the LLJ onshore along a 200 km stretch of southeastern Eritrean coastline, producing an excellent wind energy resource that peaks daily at 3 p.m. LST. This resource is currently under development for both grid-connected and decentralized village wind energy applications.

scholarly journals A Tidal Hydrodynamic Model for Cook Inlet, Alaska, to Support Tidal Energy Resource Characterization

2020 ◽  
Vol 8 (4) ◽  
pp. 254 ◽  
Author(s):  
Taiping Wang ◽  
Zhaoqing Yang
Keyword(s):  
Hydrodynamic Model ◽  
Energy Resource ◽  
Tidal Energy ◽  
High Energy ◽  
Energy Development ◽  
Open Boundary ◽  
Energy Extraction ◽  
Error Statistics ◽  
Cook Inlet ◽  
Tidal Elevation

Cook Inlet in Alaska has been identified as a prime site in the U.S. for potential tidal energy development, because of its enormous tidal power potential that accounts for nearly one-third of the national total. As one important step to facilitate tidal energy development, a tidal hydrodynamic model based on the unstructured-grid, finite-volume community ocean model (FVCOM) was developed for Cook Inlet to characterize the tidal stream energy resource. The model has a grid resolution that varies from about 1000 m at the open boundary to 100–300 m inside the Inlet. Extensive model validation was achieved by comparing model predictions with field observations for tidal elevation and velocity at various locations in Cook Inlet. The error statistics confirmed the model performs reasonably well in capturing the tidal dynamics in the system, e.g., R2 > 0.98 for tidal elevation and generally > 0.9 for velocity. Model results suggest that tides in Cook Inlet evolve from progressive waves at the entrance to standing waves at the upper Inlet, and that semi-diurnal tidal constituents are amplified more rapidly than diurnal constituents. The model output was used to identify hotspots that have high energy potential and warrant additional velocity and turbulence measurements such as East Foreland, where averaged power density exceeds 5 kw/m2. Lastly, a tidal energy extraction simulation was conducted for a hypothetical turbine farm configuration at the Forelands cross section to evaluate tidal energy extraction and resulting changes in far-field hydrodynamics.

scholarly journals Resource Assessment of Tidal Stream Power in Pakiputan Strait, Davao Gulf, Philippines

2021 ◽  
Vol 11 (3) ◽  
pp. 7233-7239
Author(s):  
E. V. Palconit ◽  
J . R. Villanueva ◽  
N. J. Enano ◽  
M. J. Buhali ◽  
A. C. Mascariñas ◽  
...  
Keyword(s):  
Energy Resource ◽  
Acoustic Doppler Current Profiler ◽  
Tidal Energy ◽  
Resource Assessment ◽  
The Philippines ◽  
Dynamics Modeling ◽  
Stream Power ◽  
Marine Energy ◽  
Current Profiler ◽  
Energy Conversion Systems

During the last years, there are ongoing efforts on the development of tidal energy conversion systems in the Philippines. This study conducts tidal energy resource assessment in the Pakiputan Strait following a methodology outlined as stage 2a tidal resource assessment published by the European Marine Energy Centre (EMEC). The study assessed the preliminary results of the tidal velocities at Pakiputan Strait with a mean spring peak velocity (Vmsp) of 1.7m/s at 3m from the water surface from 15 days of continuous data collection using a seabed-mounted acoustic Doppler current profiler. This corresponded to an estimated Annual Energy Production (AEP) of 1350kWh/y for 1m2 of capture area of the generic device. Sensitivity analysis showed that the spatial distribution of hydrodynamic model results does not vary significantly with variations in certain input parameters. It further showed that a 10% decrease in the nominal value of Vmsp on-site led to a 15% decrease in the nominal value of AEP, while a 10% increase in the nominal value of Vmsp led to a 30% increase in the nominal value of AEP, assuming that the considered Vmsp still corresponded to the velocity distribution from observations. A static survey and the use of computational fluid dynamics modeling are recommended to further enhance the analysis of the study.

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