Numerical Performance Study for the Buoy Shape of Point Absorber Wave Energy Converters

Tan, Wan Ching; Chan, Keng Wai; Oon, Bee Mun; Puay, How Tion; Lim, Yi Leang

doi:10.37934/cfdl.12.6.118133

Cited by 4 publications

(7 citation statements)

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“…Then, these results are analyzed using MathCAD software. Both of this research [84], [104] discuss hydrodynamic buoyancy studies. This research is considered partial and preliminary WEC system development.…”

Section: A Wec Projects and Device Developmentmentioning

confidence: 97%

“…Nevertheless, research on WEC device development in Malaysia is still at an early stage. Several simulation models [22], [38], [82]- [86], [104], lab sized WEC devices [89], [105] and small scale prototype [88], [106], [107] are included in this study.…”

Section: A Wec Projects and Device Developmentmentioning

confidence: 99%

“…Authors [104] present a numerical study of different buoy shapes used for PA WEC. Among the shapes studied, when the buoy's mass is fixed, the cylindrical type buoy gives the best velocity.…”

Section: A Wec Projects and Device Developmentmentioning

confidence: 99%

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A Review of Power Electronics for Nearshore Wave Energy Converter Applications

et al. 2022

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In compliance with the green energy policy, mitigation from high fossil fuel dependency is becoming a new objective for most countries, including Malaysia. Wave energy is among extensively explored renewable energy relatively clean, sustainable, and inexhaustible resources. To this day, neither definite wave energy technology nor widely available commercial wave farm supplying the grid has existed. Therefore, wave energy harvesting is the most compelling solution, especially in regions where the possibility of grid connection is low in the nearest future. Like other renewable energy, the voltage amplitude and frequency generated from waves are unstable and may vary continuously. This uncertainty has created energy transfer challenges since the grid requires a stable and uninterrupted energy supply. Therefore, power electronics devices are employed to modulate the controller circuits' pulse width. Further understanding of the relationship between wave energy conversion technology and its power conversion, particularly for nearshore applications, is summarized. This work also discussed selected wave energy conversion research and power conversion system implemented and studied in Malaysia. Finally, this review can provide extensive overview and broad understanding into power conversion system for Wave Energy Conversion, especially for nearshore applications.

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Section: A Wec Projects and Device Developmentmentioning

confidence: 97%

Section: A Wec Projects and Device Developmentmentioning

confidence: 99%

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A Review of Power Electronics for Nearshore Wave Energy Converter Applications

et al. 2022

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“…In general, two-step algorithms are more robust compared with three-step or four step methods in computation of wave equation, and it is possible to be extended further for various applications related to wave fluctuations [67,68].…”

Section: Average Numerical Errormentioning

confidence: 99%

Comparative Review on Computational Performance of Multistep Schemes in Solving One-Dimensional Linear Wave Equation

Hayytov

Tey

Kang

et al. 2021

CFDL

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Among several numerical methods used to solve the hyperbolic model of the linear wave equation, single-step algorithms can be the more popular ones. However, these algorithms are time-consuming while incurring numerical inaccuracy. Thus, multistep methods can be a suitable option as it has a high order of accuracy. This study aims to investigate and compare the computational performance of these multistep schemes in solving hyperbolic model based on one-dimensional linear wave equation. The techniques studied in this paper comprise the two-step Lax-Wendroff method, MacCormack method, second-order upwind method, Rusanov-Burstein-Mirin method, Warming-Kutler-Lomax method, and fourth-order Runge-Kutta method. Finite difference method is applied in discretisation. Our simulation found that although higher-order multistep methods are more stable than single-step algorithm, they suffer numerical diffusion. The two-step Lax-Wendroff method outperforms other schemes, although it is relatively simple compared with the other three and four steps schemes. The second-order upwind method is attractive as well because it is executable even with a high Courant number.

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“…Five numerical models constructed using FLOW‐3D were analyzed. Additionally, the optimal phase condition of buoys was achieved by varying the radius and mass density 21 . The natural period and maximum capture width ratio were obtained through a water‐tank test with a small‐scale model 22 .…”

Section: Introductionmentioning

confidence: 99%

Optimization of energy‐capture performance of point‐absorber wave energy converter

Zhang

Deng

et al. 2022

Intl J of Energy Research

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An optimization process is proposed for improving the energy-harvesting efficiency of the point-absorber wave energy converter (WEC) and thus enhancing the utilization of wave energy resources. The multidisciplinary design optimization integration system ISIGHT is adopted to establish an optimization design flow for the shape parameters of the point-absorber WEC. The motion equations of the point-absorber WEC are established according to the potential flow theory, and the wave energy capture capacity per unit is calculated. Considering it as the objective, the point-absorber WEC is modified to improve the energy-capture efficiency by using an optimization function in an approximation model. A comparison indicates that a cylindrical-bottom point-absorber WEC with a diameter of 7 m, draft of 1.8 m, and damping factor of 31 150 NsÁm À1 has the optimal performance and the maximum energy capture capacity. The energy-capture performance of the WEC can be significantly enhanced through this optimization method.

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Numerical Performance Study for the Buoy Shape of Point Absorber Wave Energy Converters

Cited by 4 publications

References 0 publications

A Review of Power Electronics for Nearshore Wave Energy Converter Applications

A Review of Power Electronics for Nearshore Wave Energy Converter Applications

Comparative Review on Computational Performance of Multistep Schemes in Solving One-Dimensional Linear Wave Equation

Optimization of energy‐capture performance of point‐absorber wave energy converter

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