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Optimal Operation of a Tidal Turbine [PDF]
, 2022 The optimum operation strategy of a tidal turbine is calculated for a generic problem which consists of a small and shallow channel between two infinite reservoirs exposed to tidal waves. The optimal operating volume flow rate is found to be 1/√3 of the natural flow rate without employed tidal turbines and yields the maximum energy to be harvested per ...
Schmitz, Christian, Pelz, Peter F.
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Hydraulic Performance of the Tidal Turbine
2011 Asia-Pacific Power and Energy Engineering Conference, 2011This paper does researches for vertical axis tidal turbine based on academic analysis and numerical simulation. Keep on the tip speed ratio and change the inlet speed. And then analyze hydraulic performance of the different tidal turbines. For the problem in the tidal technology, use airfoil cross-section that is suitable for low speed flow use, change
Hongbo Lu, Liangliang Ma, Xiuling Bao
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Tidal turbine benchmarking exercise
Proceedings of the European Wave and Tidal Energy Conference, 2021Uncertainty in tidal turbine loading contributes significantly to conservatism in turbine design. This uncertainty originates not only from a lack of knowledge of the flow field at a particular site, but also from lack of understanding of the fundamental physics which govern the loading and performance of tidal turbines in unsteady and turbulent flow ...
Tucker Harvey, S. W. +6 more
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Micropower From Tidal Turbines
Volume 1B, Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Fundamental Issues and Perspectives in Fluid Mechanics, 2013In addition to utility-scale power generation (e.g., rated capacities greater than 106 W), there are also possibilities for tidal current generation at the micro-scale (e.g., rated capacities less than 102 W) that could provide power to autonomous oceanographic instrumentation. This paper presents performance characteristics of a high-solidity, helical,
Brian L. Polagye +2 more
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The efficiency of a turbine in a tidal channel
Journal of Fluid Mechanics, 2007There is an upper bound to the amount of power that can be generated by turbines in tidal channels as too many turbines merely block the flow. One condition for achievement of the upper bound is that the turbines are deployed uniformly across the channel, with all the flow through them, but this may interfere with other uses of the channel. An isolated
CHRIS GARRETT, PATRICK CUMMINS
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Implementation of Tidal Stream Turbines and Tidal Barrage Structures in DG-SWEM
Volume 10: Ocean Renewable Energy, 2019Abstract There are two approaches to extracting power from tides — either turbines are placed in areas of strong flows or turbines are placed in barrages enabling the two sides of the barrage to be closed off and a head to build up across the barrage.
Schnabl, A +6 more
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Tidal Current Turbine, Wind Turbine and Their Dynamic Modelling
2014Wind and tidal current are of the most common energy resources for generating electricity in the near future because of the oil problems (crises and pollution). Within that frame, wind and tidal current energies are surging to the fore. The dynamic model of the offshore wind and tidal current is very important topic for dealing with these renewable ...
Hamed H. H. Aly, M. E. El-Hawary
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Tuning turbines in a tidal channel
Journal of Fluid Mechanics, 2010As tidal turbine farms grow they interact with the larger scale flow along a channel by increasing the channel's drag coefficient. This interaction limits a channel's potential to produce power. A 1D model for a tidal channel is combined with a theory for turbines in a channel to show that the tuning of the flow through the turbines and the density of ...
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Reliability prediction for tidal turbines
2021Marine renewable energy has the potential to form a key part of the renewable electricity generation arsenal that is required for society to prevent catastrophic global warming. Device reliability is one of the great engineering hurdles facing the sector; operating cost effectively in the harsh open ocean is very challenging.
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