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Energies
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Tidal Energy: Latest Advances and Prospects of Tidal Current Turbine
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Tidal Energy: Latest Advances and Prospects of Tidal Current Turbine

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A3: Wind, Wave and Tidal Energy".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 13288

Special Issue Editor

Dr. Saeed Badshah

E-Mail Website
Guest Editor
Department of Mechanical Engineering, International Islamic University Islamabad, Islamabad 44000, Pakistan
Interests: tidal current turbines; renewable energy; finite element modeling; computational fluid dynamic; structural dynamics; mechanical vibrations; experimental modal testing and analysis

Special Issue Information

Dear Colleagues,

Tidal energy represents a significant opportunity to increase the world’s renewable power generation capacity. Recent decades have witnessed that tidal energy is getting considerable attention because of its high density, well-predictability, and low environmental impact as compared to other renewable energy resources. The challenge is in making it commercially feasible to capture and convert the energy into usable power. In this context, intensive research has led to the development of the tidal industry. To fully harness tidal energy as a significant and ongoing source of clean energy, it is critical that researchers explore ways to assist in developing technologies and methods that increase its viability for broad commercial application. To accelerate the development of tidal energy, improved designs of Tidal Current Turbine (TCT) are necessary.

This Special Issue aims to present original research, reviews, and case studies outlining recent progress and exploring scenarios in tidal energy exploitation.  

Potential topics for publication include, but are not limited to: Tidal turbines, Coupled Fluid Structure Interaction, Computational fluid dynamics modelling of tidal turbines, Numerical modelling of turbines, Performance analysis, Wake analysis, Renewable energy, Resource assessment, Impact on farm operation, Cost assessment, Array modelling, Device optimization, Grid connection, Installation and maintenance and effect of climate change on tidal energy.

Dr. Saeed Badshah
Guest Editor

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Keywords

  • Tidal energy
  • Tidal turbines
  • Device optimization
  • Numerical modeling
  • Performance
  • Wake
  • Computational fluid dynamics
  • Fluid-structure
  • Interaction
  • Array modeling

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Published Papers (3 papers)

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Research

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21 pages, 24088 KiB  
Article
Physical Modelling of Tidal Stream Turbine Wake Structures under Yaw Conditions
by Can Zhang, Jisheng Zhang, Athanasios Angeloudis, Yudi Zhou, Stephan C. Kramer and Matthew D. Piggott
Energies 2023, 16(4), 1742; https://doi.org/10.3390/en16041742 - 9 Feb 2023
Cited by 5 | Viewed by 2360
Abstract
Tidal stream turbines may operate under yawed conditions due to variability in ocean current directions. Insight into the wake structure of yawed turbines can be essential to ensure efficient tidal stream energy extraction, especially for turbine arrays where wake interactions emerge. We studied [...] Read more.
Tidal stream turbines may operate under yawed conditions due to variability in ocean current directions. Insight into the wake structure of yawed turbines can be essential to ensure efficient tidal stream energy extraction, especially for turbine arrays where wake interactions emerge. We studied experimentally the effects of turbines operating under varying yaw conditions. Two scenarios, including a single turbine and a set of two turbines in alignment, were configured and compared. The turbine thrust force results confirmed that an increasing yaw angle results in a decrease in the turbine streamwise force and an increase in the turbine spanwise force. The velocity distribution from the single turbine scenario showed that the wake deflection and velocity deficit recovery rate increased at a rate proportional to the yaw angle. The two-turbine scenario results indicated that the deployment of an upstream non-yawed turbine significantly limited the downstream wake steering (i.e., the wake area behind the downstream turbine). Interestingly, a yawed downstream turbine was seen to influence the steering of both the upstream and the downstream wakes. These systematically derived data could be regarded as useful references for the numerical modelling and optimisation of large arrays. Full article
(This article belongs to the Special Issue Tidal Energy: Latest Advances and Prospects of Tidal Current Turbine)
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13 pages, 6150 KiB  
Article
Effect of Blade Diameter on the Performance of Horizontal-Axis Ocean Current Turbine
by Mansoor Ahmed Zaib, Arbaz Waqar, Shoukat Abbas, Saeed Badshah, Sajjad Ahmad, Muhammad Amjad, Seyed Saeid Rahimian Koloor and Mohamed Eldessouki
Energies 2022, 15(15), 5323; https://doi.org/10.3390/en15155323 - 22 Jul 2022
Cited by 1 | Viewed by 2111
Abstract
The horizontal-axis ocean current turbine under investigation is a three-blade rotor that uses the flow of water to rotate its blade. The mechanical energy of a turbine is converted into electrical energy using a generator. The horizontal-axis ocean current turbine provides a nongrid [...] Read more.
The horizontal-axis ocean current turbine under investigation is a three-blade rotor that uses the flow of water to rotate its blade. The mechanical energy of a turbine is converted into electrical energy using a generator. The horizontal-axis ocean current turbine provides a nongrid robust and sustainable power source. In this study, the blade design is optimized to achieve higher efficiency, as the blade design of the hydrokinetic turbine has a considerable effect on its output efficiency. All the simulations of this turbine are performed on ANSYS software, based on the Reynolds Averaged Navier–Stokes (RANS) equations. Three-dimensional (CFD) simulations are then performed to evaluate the performance of the rotor at a steady state. To examine the turbine’s efficiency, the inner diameter of the rotor is varied in all three cases. The attained result concludes that the highest Cm value is about 0.24 J at a tip-speed ratio (TSR) of 0.8 at a constant speed of 0.7 m/s. From 1 TSR onward, a further decrease occurs in the power coefficient. That point indicates the optimum velocity at which maximum power exists. The pressure contour shows that maximum dynamic pressure exists at the convex side of the advancing blade. The value obtained at that place is −348 Pa for case 1. When the dynamic pressure increases, the power also increases. The same trend is observed for case 2 and case 3, with the same value of optimum TSR = 0.8. Full article
(This article belongs to the Special Issue Tidal Energy: Latest Advances and Prospects of Tidal Current Turbine)
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Review

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18 pages, 5225 KiB  
Review
Advancement of Tidal Current Generation Technology in Recent Years: A Review
by Zhen Qin, Xiaoran Tang, Yu-Ting Wu and Sung-Ki Lyu
Energies 2022, 15(21), 8042; https://doi.org/10.3390/en15218042 - 28 Oct 2022
Cited by 16 | Viewed by 6124
Abstract
Renewable energy provides an effective solution to the problem existing between energy and environmental protection. Tidal energy has great potential as a form of renewable energy. Tidal current generation (TCG) technology is the earliest renewable energy power generation technology. The advancement of science [...] Read more.
Renewable energy provides an effective solution to the problem existing between energy and environmental protection. Tidal energy has great potential as a form of renewable energy. Tidal current generation (TCG) technology is the earliest renewable energy power generation technology. The advancement of science and technology has led to TCG rapidly developing since its emergence in the last century. This paper investigates the development of TCG in recent years based on the key components of TCG systems, both in terms of tidal energy harvesting research and power generation unit research. A summary of tidal energy harvesting is presented, investigating the main tidal energy harvesting units currently available. In addition, research on generators and generator control is summarized. Lastly, a comparison between horizontal and vertical axis turbines is carried out, and predictions are made about the future trends in TCG development. The purpose of this review is to summarize the research status and research methods of key components in tidal energy power generation technology and to provide insight into the research of tidal energy-related technologies. Full article
(This article belongs to the Special Issue Tidal Energy: Latest Advances and Prospects of Tidal Current Turbine)
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