Numerical Study of an Oscillating-Wing Wingmill for Ocean Current Energy Harvesting: Fluid-Solid-Body Interaction with Feedback Control

Balam-Tamayo, David; Málaga, Carlos; Figueroa-Espinoza, Bernardo

doi:10.3390/jmse9010023

Cited by 5 publications

(4 citation statements)

References 37 publications

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“…Some more marine renewable energy resources and technologies have also received positive attentions to collect renewable energy from nature such as developing a tethered dual rotor turbine model for ocean current conversion technique [18], studying the ocean current energy harvesting by an oscillatingwing wingmill converter [19], using reverse electrodialysis technology to harvest renewable energy from salinity gradient energy [20,21], developing the technologies to collect off shore energy [22,23]..…”

Section: Marine Renewable Energy Generation (Mreg)mentioning

confidence: 99%

A short review of marine renewable energy: Generation, storage, and applications

Quan,

C. K. Chung,

X. C. Nguyen

et al. 2024

JFST

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Renewable energy is a sustainable and green energy converted from renewable energy resources in the nature. There is a huge amount of renewable energy resources in the ocean that can be changed into useful energy like electricity, store for long time use, or apply in the daily energy consumption. These marine renewable energies (MRE) include wave energy, ocean thermal energy, tidal energy, ocean current energy, salinity gradient energy, and offshore energy. With a big area, the oceans have been prospected that it brings endless renewable energy sources for social development and human demand. The renewable ocean energy shows many advantages of sustainable energy, clean energy, and non-carbon dioxide emissions by generating from wave and water in the ocean with an enormous amount of natural energy resources. The MRE can service at many areas of off-shore, on-shore, and remote areas where need energy to drive daily living demands. The MRE reveals some disadvantages such as the influence of daily, monthly, season, and period of time. The solutions have been developed to solve the limitations of the MRE such as developing the storage method to store energy for long time use or making the balance of the output performance to improve quality of the renewable energy. The MRE has also received many concerns from countries by promulgating policies, strategies, and plans to develop the renewable ocean energy such as green economy development, blue economy strategy, carbon dioxide emission reduction, and encouragement of using marine renewable energy. This paper reviews current marine renewable energy with its generation, storage, and application. The work also mentioned some advantages, disadvantage, policies, strategies, and solutions to encourage the development of the renewable ocean energy in over the world. The results hope that it will be spread development, exploitation, and application of marine renewable energy in the near future. Keywords: Marine renewable energy, energy storage, generation, application, sustainable energy

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Section: Marine Renewable Energy Generation (Mreg)mentioning

confidence: 99%

A short review of marine renewable energy: Generation, storage, and applications

Quan,

C. K. Chung,

X. C. Nguyen

et al. 2024

JFST

View full text Add to dashboard Cite

show abstract

“…The exploration of fully passive flapping foils in free surface flow aimed to identify optimal submergence depths and the effects of monochromatic waves [44]. A responsive control mechanism has been designed to adjust the attack angle, with the goal of increasing lift force and improving overall power output [45]. It was discovered that using a shroud can increase the power extraction efficiency of an oscillating foil by 35.8% compared to its unshrouded version [46].…”

Section: Introductionmentioning

confidence: 99%

Numerically Investigating the Energy-Harvesting Performance of an Oscillating Flat Plate with Leading and Trailing Flaps

Saleh,

Sohn

2024

Energies

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This study investigates the power generation capability of an oscillating wing energy harvester equipped with two actively controlled flaps positioned at the leading and trailing flaps of the wing. Various parameters, including flap lengths and pitch angles for the leading flap and trailing flap, are explored through numerical simulations. The length of the main wing body ranges from 40% to 65% of the chord length, c, while the leading and trailing flaps vary accordingly, summing up to the total length of the flat plate c = 100%. The pitch angles of the two flaps are adjusted within predefined limits. The pitch angle for the leading flap varies between 25° and 55°, while the trailing flap’s angle ranges from 10° to 40° across 298 different simulation scenarios. The results indicate that employing both leading and trailing flaps enhances the power output compared to a wing with a single flap configuration. The trailing flap deflects the incoming fluid more vertically, while the leading flap increases pressure difference across the surface of the main wing body, synergistically improving overall performance. The power output occurs at a specific length percentage: a leading flap of 30%, a main wing body of 50%, and a trailing flap of 20%, with pitch angles of 50°, 85°, and 30°, respectively, increasing the output power increments by 4.39% compared to a wing with a leading flap, 4.92% compared to a wing with a trailing flap, and 28.24% compared to a single flat plate. The highest efficiency for the specified length percentages is 40.37%.

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“…A fully passive oscillating wing in free surface flow was explored, aiming to identify ideal submersion levels and the effects of single-frequency waves [13]. A feedback control system was proposed to regulate the angle of attack, aiming to boost lift force and thereby enhance power output [14]. A shroud enhances oscillating foil power extraction efficiency by 35.8% over an unshrouded counterpart [15].…”

Section: Introductionmentioning

confidence: 99%

Power Extraction Performance by a Hybrid Non-Sinusoidal Pitching Motion of an Oscillating Energy Harvester

Saleh,

Sohn

2024

Energies

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This study proposes a hybrid pitching motion for oscillating flat plates aimed at augmenting the energy extraction efficiency of an energy harvester. The proposed hybrid pitching motion, within the first half cycle, integrates a non−sinusoidal movement starting at t/T = 0 and progressing to t/T = 0.25, with a sinusoidal movement initiating after t/T > 0.25 and continuing to t/T = 0.5. The second half of the cycle is symmetric to the first half but in the opposite direction. The calculated results show that the proposed hybrid pitching motion outperforms both the sinusoidal and the non−sinusoidal motions. The hybrid pitching motion merges the merits of both the sinusoidal and non−sinusoidal motions to optimize pitch angle variation. This integration is pivotal for enhancing the overall power output performance of an oscillating energy harvester characterized by momentum change that enhances the orientation of the heaving movement, smoother motion transitions, and consistent energy harvesting. The power generation is obtained at wing pitch angles of 55°, 65°, 70°, 75°, and 80° during a hybrid pitching motion. The proposed hybrid pitching motion, set at a pitch angle of 70°, achieves a maximum power output that exceeds the oscillating flat plate using a sinusoidal pitching motion by 16.0% at the same angle.

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Numerical Study of an Oscillating-Wing Wingmill for Ocean Current Energy Harvesting: Fluid-Solid-Body Interaction with Feedback Control

Cited by 5 publications

References 37 publications

A short review of marine renewable energy: Generation, storage, and applications

A short review of marine renewable energy: Generation, storage, and applications

Numerically Investigating the Energy-Harvesting Performance of an Oscillating Flat Plate with Leading and Trailing Flaps

Power Extraction Performance by a Hybrid Non-Sinusoidal Pitching Motion of an Oscillating Energy Harvester

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