Peak Forces on Wave Energy Linear Generators in Tsunami and Extreme Waves

Sjökvist, Linnea; Göteman, Malin

doi:10.3390/en10091323

Cited by 14 publications

(9 citation statements)

References 25 publications

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“…Figure 6. Uppsala University WEC; schematic view of the direct-driven linear generator adapted from [47] under the Creative Commons CC-BY license.…”

Section: Uppsala University Wecmentioning

confidence: 99%

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Response of Point-Absorbing Wave Energy Conversion System in 50-Years Return Period Extreme Focused Waves

Katsidoniotaki

Nilsson

Rutgersson

et al. 2021

JMSE

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This work evaluates the survivability of a point-absorbing wave energy converter at sea states along and inside the 50-year environmental contour for a selected-site in North Sea, by utilizing CFD simulations. Focused wave groups based on NewWave theory are used to model the extreme waves. The numerical breaking waves have been previously predicted by the analytical breaking criterion, showing that the latter provides an accurate estimate for the breaking state. The forces on key components of the device and the system’s dynamics are studied and compared. Slamming loads are identified in the interaction with extreme waves, particularly with breaking waves, and compared with the analytical formulas for slamming estimation as suggested by industrial standards. Considering the extreme wave characteristics, the accompanied phenomena and the resulting WEC’s response, this work contributes to the identification of the design-waves given the environmental contour of the selected site. The top-left side of the contour is identified as the more critical area as it consists of steep and high waves inducing significant nonlinear phenomena, resulting in high loads.

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“…Figure 6. Uppsala University WEC; schematic view of the direct-driven linear generator adapted from [47] under the Creative Commons CC-BY license.…”

Section: Uppsala University Wecmentioning

confidence: 99%

“…Figure 7. The forces acting on the buoy are the sum of the hydrodynamic, gravitational and generator (F line ) forces adapted from[47] under the Creative Commons CC-BY license.…”

mentioning

confidence: 99%

Response of Point-Absorbing Wave Energy Conversion System in 50-Years Return Period Extreme Focused Waves

Katsidoniotaki

Nilsson

Rutgersson

et al. 2021

JMSE

Self Cite

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“…Basically, the working principle of technology that converts ocean wave energy into electrical energy is to accumulate ocean wave energy to turn a generator turbine (Waves, 2017;Bourgault and Galbraith, 2016;Bozzi et al, 2013). Therefore it is very important to choose a location that allows topographical accumulation of energy.…”

Section: Ocean Wave Energy Utilizationmentioning

confidence: 99%

A Contextual Semi-Assisted Project-Based Learning on Ocean Wave Energy: Pre-service Physics Teachers’ Perceptions

Satriawan

Liliasari²,

Setiawan³

et al. 2021

JPF

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The lack of technological innovation in the utilization of ocean wave energy as a renewable energy source is caused by a lack of public knowledge about this matter. Therefore, it needs to be introduced early, especially to pre-service teachers through innovative and fun learning. The aim of this study was to identify the responses of pre-service physics teachers about the learning program to introduce the concept of utilizing ocean wave energy. The research subjects were 31 sixth semester students who are taking environmental physics lectures in the physics education study program at one of the teachers' university in West Nusa Tenggara Province for the 2019/2020 academic year. The sample was taken by using purposive sampling technique. Data collection was carried out by means of observation, interview, and questionnaire techniques. All data collected were then analyzed simultaneously descriptively. The findings of this study showed that almost 90% pre-service physics teacher students agreed that the learning program had a positive impact on increasing interest, motivation, critical thinking skills, and creative thinking skills, and made them easier to solve problems and grow solid cooperation. Therefore, it can be concluded that pre-service physics teacher students agree to the use of semi-assisted project-based learning programs with contextual problems.

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“…When considering the response amplitude operator (RAO) defined as regular, these CFD simulations showed fair agreement with experimental results; in general, the device response predicted in CFD tended to be smaller than predicted by linear models. Sjökvist and Göteman [90] studied the response of a tethered point absorber using regular waves and tsunami waves in OpenFOAM. Westphalen et al [91] performed CFD simulations for a simple floating body (the "Manchester Bobber") and performed comparisons with experimental data collected by Weller et al [54].…”

Section: Numerical Modelingmentioning

confidence: 99%

A Survey of WEC Reliability, Survival and Design Practices

Coe

Rij

2017

Energies

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A wave energy converter must be designed to survive and function efficiently, often in highly energetic ocean environments. This represents a challenging engineering problem, comprising systematic failure mode analysis, environmental characterization, modeling, experimental testing, fatigue and extreme response analysis. While, when compared with other ocean systems such as ships and offshore platforms, there is relatively little experience in wave energy converter design, a great deal of recent work has been done within these various areas. This paper summarizes the general stages and workflow for wave energy converter design, relying on supporting articles to provide insight. By surveying published work on wave energy converter survival and design response analyses, this paper seeks to provide the reader with an understanding of the different components of this process and the range of methodologies that can be brought to bear. In this way, the reader is provided with a large set of tools to perform design response analyses on wave energy converters.

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Peak Forces on Wave Energy Linear Generators in Tsunami and Extreme Waves

Cited by 14 publications

References 25 publications

Response of Point-Absorbing Wave Energy Conversion System in 50-Years Return Period Extreme Focused Waves

Response of Point-Absorbing Wave Energy Conversion System in 50-Years Return Period Extreme Focused Waves

A Contextual Semi-Assisted Project-Based Learning on Ocean Wave Energy: Pre-service Physics Teachers’ Perceptions

A Survey of WEC Reliability, Survival and Design Practices

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