Parametric analysis of three dimensional flow models applied to tidal energy sites in Scotland

Rahman, A. K.; Venugopal, Vengatesan

doi:10.1016/j.ecss.2017.02.027

Cited by 23 publications

(22 citation statements)

References 6 publications

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“…Several previous studies have also carried out modeling using various tools, such as Delft3D [14], FVCOM (Finite Volume Coastal Ocean Model) [1], ROMS (Regional Ocean Model System) [4], and MIKE [6].…”

Section: Numerical Modelmentioning

confidence: 99%

Field Measurement and Numerical Modeling of Tidal Current in Larantuka Strait for Renewable Energy Utilization

Ajiwibowo¹

2017

GEOMATE

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ABSTRACT:The amount of electricity consumed is growing rapidly, along with population growth and technological development. Meanwhile, Indonesia's energy supply is predominantly supported by nonrenewable sources, so an approach to renewable energy is urgently needed. This study uses a numerical model to determine the potency of tidal current power at Larantuka Strait, East Nusa Tenggara Province, Indonesia. The output of the study is the electricity generated with a conversion device at several locations. The numerical model is generated using MIKE 3. In order to validate the numerical model, field measurements are conducted to obtain the detailed bathymetry, tidal surface elevation, and tidal current velocity data. The numerical model shows good agreement with the field measurement data; the average errors of tidal surface elevation and tidal current velocity are 4.04 and 9.79%, respectively. Furthermore, the tidal current model is analyzed and two potential sites are found at the narrowest part of the strait. The generated power is calculated for a D10 Sabella turbine. The calculation shows that the amounts of power generated are 522.972 and 324.12 MWh for the two sites, respectively, in 2014. The study shows that Larantuka Strait is very promising and suitable as a site for a tidal current power plant with its tidal current and water depth. A detailed analysis, including financial, navigation, and environmental studies, needs to be conducted to present the feasibility of the realization.

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Section: Numerical Modelmentioning

confidence: 99%

Field Measurement and Numerical Modeling of Tidal Current in Larantuka Strait for Renewable Energy Utilization

Ajiwibowo¹

2017

GEOMATE

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“…Similar studies have been conducted using other software, such as Delft3D [9], Telemac [15], ROMS [10], FVCOM [4], and MIKE [16]. The current study uses MIKE 3 (personal license).…”

Section: Model Setupmentioning

confidence: 99%

Identification of Potential Sites for Harvesting Tidal Current Power in Kelian Cape, Kelabat Bay, and Larantuka Strait

Ajiwibowo

Lodiwa

Pratama

et al. 2018

GEOMATE

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Harvesting of power from tidal currents is part of an emerging effort to capture energy from renewable sources, as non-renewable energy resources are depleted. The Indonesian government plans to develop tidal energy power generators in several areas and is conducting assessments in Bangka Belitung province at two locations in Kelian Cape and Kelabat Bay and in the province of East Nusa Tenggara at Larantuka Strait. Three potential locations namely Kelian Cape, Kelabat Bay, and Larantuka Strait, is assessed. Field measurements, numerical modeling, and potential site analysis are carried out. Both tidal elevation and tidal current validation between field measurement data and numerical modeling results are carried out and show good agreement. MIKE 3 (licensed) is used for the modeling process The Kelian Cape model presents three potential sites at Kelian Cape, with a peak velocity of 1.4 m/s. The Kelabat Bay model gives five potential sites, located at the bay's narrowest point, with a peak velocity of 1.15 m/s. The Larantuka Strait model gives four potential sites in the narrowest area, with a peak velocity of 2.5 m/s. Larantuka Strait is found to have the most potential for the harvesting of tidal current power, as the current velocity at Larantuka Strait is higher, meaning that turbine devices with higher cut-in speeds are suitable. In Kelian Cape and Kelabat Bay, devices with low cut-in speed such as the Gorlov Helical Turbine or Sabella Turbine are required.

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“…Several studies have estimated that 25 % of tidal energy in Europe is in Scottish waters and the potential to generate electricity is greater than what is currently consumed [15]. Rahman and Venugopal [16] provided a detailed analysis of several input parameters of two different numerical models: Telemac3D and Delft3D which are used for the simulation of tidal current flow at potential tidal energy sites in the Pentland Firth in Scotland. The research results indicated that the Telemac3D and Delft3D models allowed an excellent comparison with the measured data, where Delft3D the model showed the highest correlation compared to the measured data.…”

Section: Introductionmentioning

confidence: 99%

Tidal Energy Potential in the Center Zone of the Colombian Pacific Coast

Aguilar¹,

Rueda-Bayona²

2021

Inge Cuc

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Introduction: Tidal energy is evidencing interest worldwide because it can be accurately estimated due to the cyclical behavior of the tides. This energy can be extracted from differences in sea level height through the use of gates and turbines of a reservoir (tidal power plant), or extracted from tidal currents through a grid of reversible horizontal axis microturbines as proposed in this study. Thus, the Colombian Pacific region has the opportunity to implement microturbines in strategic areas with the challenge of optimizing them to extract energy with local tidal heights up to 4 m and current velocities up to 1.5 m/s. Objective: Calculate the energy potentials from tidal currents in the central zone of the Colombian Pacific coast obtained through hydrodynamic modeling (Delft3D) validated it with in situ information. Methodology: The present study starts from level 1 of technological development (Technology Readiness Levels, TRL) till reaching the TRL 2. Then, the research performed a documentary review of national and international experiences related to tidal energy, evidencing the great opportunity that Colombia has to take advantage of this type of energy and join to the growing international interest in the development of clean and renewable energies. In addition, this study characterized the tidal heights and did calculations of energy potentials from tidal currents in the Colombian Pacific derived from hydrodynamic modeling (Delft3D) validated with measured in situ data. The results of this study encourage the application of these technologies in Colombia and represents a contribution to the fulfillment of the UN sustainable development objectives (Affordable and non-polluting energy, SDG 7). Results: From the 4 analysis points, the point B (Buenaventura) registered the highest accumulated potential for electricity generation per month (31,546.56 Wh / month). The maximum tidal heights at points A, B, C and D during 2018 were 1.88 m. Furthermore, the mean velocity range at points A, B, C and D was 0.28 m/s to 0.54 m/s, and the maximum velocity for these points were 0.54 m/s, 0.49 m/s, 0.31 m/s and 0.28 m/s respectively. Then, by means of 5 tidal microturbines with a reversible horizontal axis of 1 m sweep area for the point of highest potential (B), it is possible to generate electrical energy to meet the electrical consumption of a house, and with 544 microturbines the consumption of 99 houses. The tidal farm (544 microturbines) would require an area of 2079.36 m2 (e.g. 45.6 m x 45.6 m) and an average depth of 5 m; these requirements are feasible to be met because of the study area characteristics. Conclusions: This research determined the tidal energy potential in the central zone of the Colombian Pacific for 4 points of interest, (A, B, C and D) and the highest potentials were found in points A and B located in Bahía Málaga and Buenaventura respectively. In addition, the minimum velocities, the duration of these and the diurnal tidal regime (12 h) were analyzed, and it was found that points A and B showed the lowest times (1 h and 2 h) of minimum velocity, evidencing a capacity of daily electricity generation of 22 h and 20 h respectively. In consideration of the obtained results, this research shows the opportunity to perform studies for promoting the development of reversible horizontal-axis microturbines for the exploitation of tidal energy. The generated energy could be supplied to communities with access difficulties to the electricity distribution network, what would reduce poverty and the emission of Greenhouse Gases (GHG) due to the burning of fossil and plant-based fuels (firewood). Conclusions: It was determined that the tidal energy potential in the central zone of the Colombian Pacific for 4 points of interest, (A, B, C and D) and the highest potentials were found in points A and B located in Bahía Málaga and Buenaventura respectively. In consideration of the results obtained, this research shows the opportunity performe studies for promoting the development of microturbines for electricity generation from tidal energy. The generated energy would supply to communities with difficulties in accessing the networks of electricity distribution, thus reducing poverty and the emission of Greenhouse Gases (GHG) due to the burning of fossil fuels and of vegetable origin (firewood).

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Parametric analysis of three dimensional flow models applied to tidal energy sites in Scotland

Cited by 23 publications

References 6 publications

Field Measurement and Numerical Modeling of Tidal Current in Larantuka Strait for Renewable Energy Utilization

Field Measurement and Numerical Modeling of Tidal Current in Larantuka Strait for Renewable Energy Utilization

Identification of Potential Sites for Harvesting Tidal Current Power in Kelian Cape, Kelabat Bay, and Larantuka Strait

Tidal Energy Potential in the Center Zone of the Colombian Pacific Coast

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