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- Journal Article:
Victor et al.
Overtopping wave energy converters (OWECs) are designed to extract energy from ocean waves based on wave overtopping into a reservoir, which is emptied into the ocean through a set of low-head turbines, and typically feature a low crest freeboard and a smooth impermeable steep slope. In the process of optimizing the performance of OWECs, the question arises whether adapting the slope geometry…
- Conference Paper:
Sandoval and Stoesser
Renewable energy market growth is imperative to reach a sustainable society. This necessity demands improving existing methodologies to exploit green energy sources and explore new technologies. Wave energy is one of the sources with the larger offer in power available in the oceans to be harvested; however, the remoteness and extreme conditions of the best locations to harvest wave energy…
- Conference Paper:
Colaleo et al.
The environmental consequences due to the construction and installation of energy conversion systems that exploit the marine waves have not been taken into high consideration so far. The reasons are related to the fact that these devices are still under development and not many systems have been built. However, with the growth in the number of projects and tests at sea, potential environmental…
- Thesis:
Kofoed
During the past 50 years tools for predicting wave overtopping of sea defense structures have continuously been refined. However, developers of wave energy converters have raised questions about how to predict the overtopping of structures with layouts significantly different from those of sea defense structures. Optimization of structures utilizing wave overtopping for the production of…
- Conference Paper:
Contestabile et al.
The OBREC (Overtopping Breakwater for wave Energy Conversion) is based on the overtopping phenomenon [1] where incoming waves run over an overtopping ramp and fall into a reservoir located above the sea level inside a conventional rubble mound breakwater, or into a vertical caisson breakwater. The wave energy is transformed into potential energy, with some contribution of kinetic energy. Then…
- Journal Article:
Rodriguez-Delgado et al.
Climate change is poised to exacerbate coastal erosion. Recent research has presented a novel strategy to tackle this issue: dual wave farms, i.e., arrays of wave energy converters with the dual function of carbon-free energy generation and coastal erosion mitigation. However, the implications of sea level rise – another consequence of climate change – for the effectiveness of wave farms as…
- Journal Article:
Zhuang and Lee
Wave overtopping problems continue to require more attention due to the complexity of the physical process and the lack of available predictive models. In a recent experimental study on the kinematics of wave overtopping on marine structure by Lee, Zhuang and Chang (1993), it was found that the overtopping wave constitutes a jet-like water mass impacting the shoreward region of the breakwater…
- Journal Article:
Carballo and Iglesias
The objective of this work is to investigate the impact of a wave farm on the nearshore wave climate quantifying, for the first time, the interaction of the WECs (Wave Energy Converters) with the waves using ad hoc laboratory tests. To accomplish this objective, a procedure consisting of three main steps is implemented and illustrated with a case study: a wave farm of WaveCats (a lateral…
- Conference Paper:
Contestabile et al.
The integration of the wave energy devices (WECs) into existing or new coastal structures could be a realistic solution to reducing their very high costs (Vicinanza et al., 2014). Nowadays very few devices have been constructed in full scale and no one is in commercial phase. The paper presents the prototype of an innovative breakwater for wave energy conversion installed in the port of Naples…
- Journal Article:
Contestabile and Vicinanza
In arid, coastal cities, water demand is often met through large-scale desalination systems. However, the energy required to run desalination plants remains a drawback. Further, numerous low-density population areas lack not only fresh water availability, but in most of the cases electrical grid connection or any other energy source as well. The challenge, consequently, is to ensure adequate…
- Conference Paper:
Contestabile et al.
The Overtopping BReakwater for Energy Conversion (OBREC) is a new typology of overtopping wave energy converter (OTD) integrated into a traditional rubble mound breakwater. The device can be considered as an innovative non-conventional breakwater that has the same functions as the traditional structures with the added-valued of the energy production. The paper presents a comprehensive overview…
- Journal Article:
Contestabile et al.
This paper constructs an optimal configuration assessment, in terms of the financial returns, of the Overtopping BReakwater for wave Energy Conversion (OBREC). This technology represents a hybrid wave energy harvester, totally embedded in traditional rubble mound breakwaters. Nine case studies along the southern coast of Western Australia have been analysed. The technique provides tips on how…
- Conference Paper:
Zhang et al.
The characteristics of wave conditions with large tidal ranges and small wave heights in China's coastal waters limit the operation time of traditional single-stage overtopping devices, while the multi-stage overtopping wave energy converters can increase the overall operation time of the device by distributing the upper and lower reservoirs. To study the overtopping performance of the multi-…
- Journal Article:
Simonetti et al.
This paper presents the results of laboratory tests on a hybrid wave energy converter concept, the O2WC (Oscillating-Overtopping Water Column) device. The proposed device aims at providing an alternative to the classical OWC concept, storing part of the wave energy of the highly energetic sea states in a second chamber at atmospheric pressure, through overtopping phenomena. In this…
- Journal Article:
Cisco et al.
The present work proposes a numerical study of an overtopping wave energy converter. The goal of this study is to evaluate the theoretical power that can be converted by an overtopping device subjected to sea waves in the coastal region of Tramandaí, Brazil. For this, realistic irregular waves were generated using the WaveMIMO methodology, which allows numerical simulation of sea waves through…
- Conference Paper:
Liu and Shi
Saucer-like Wave Energy Convertor is an offshore wave energy convertor for collecting the overtopping waves and converting the water head into electric power. The mooring system of this new type ocean device is designed in the present paper. A new design plan of the mooring system called Chain Tension Leg is proposed and calculated by AQWA, which has confirmed that the design plan is suitable…
- Conference Paper:
Nielsen and Pedersen
In order to obtain a control system for a wave energy power plant a linear dynamic model of the buoyancy system is presented. The plant Wave Dragon is a floating device using the potential energy in overtopping waves to produce power. A water reservoir is placed on top of the Wave Dragon, and hydro turbines lead the water to the sea producing electrical power. It is important to control the…
- Conference Paper:
Tan and Lee
The energy demand in Malaysia has shown a drastic increase over the years. The primary energy supply is natural gas, coal, and coke energy extraction. However, these energy extractions are considered unclean and not sustainable. Therefore, renewable energy could be the immediate solution. Furthermore, previous studies in ocean engineering indicated that Malaysia’s sea condition is favorable to…
- Conference Paper:
Yao et al.
To adopt the wave condition of the East China Sea, a new kind of the overtopping wave power device has been designed, and it has a multi-level ramp to capture more wave energy. According to the experimental statistics and the simulation data, the parameters of the structure were confirmed. Then, the simulation experiment was carried out through the Computational Fluid Dynamics (CFD) software.…
- Conference Paper:
Jungrungruengtaworn and Hyun
The effects of structure geometry of multi-stage overtopping wave energy converter (OWEC) are studied using two-dimensional numerical simulation. Two design strategies, adaptive slot and overlap ramp, are investigated. The hydraulic efficiency is used to determine the overtopping performance. The numerical results show that the non-adaptive layout in combination with average slot width of 0.4…
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