Application of the time-dependent mild-slope equations for the simulation of wake effects in the lee of a farm of Wave Dragon wave energy converters

Mapping and Assessment of the United States Ocean Wave Energy Resource

“…When directional spreading is large (as in local wind-driven seas), wave height recovers more quickly (over a shorter distance). This effect is illustrated in Figure 2-12, which presents numerical wave basin results for a single terminator device (Beels et al 2010). In long-crested irregular waves, the low-energy wake behind a 260 m wide, terminator extends more than 4 km behind the device, where wave heights recover to only 65-70% of their incident value.…”

“… 2-16  As noted above, Smith et al (2007) assumed that wave energy is absorbed uniformly across the width of an obstacle, not accounting for the alternating presence of wave energy devices and gaps between devices in an array. A more recent analysis (Troch et al 2010) includes this effect for an array of Wave Dragon terminator devices in infinitely long-crested irregular waves. As with Smith et al (2007), Troch et al (2010) is focused on an array oriented across the direction of wave travel.…”

“…In Troch et al (2010), each individual terminator was estimated to absorb 45% of the incident wave energy, with no wave radiation (i.e., the device is fixed and does not make waves by its own motions). This represents a lower energy shadow than would occur with heaving-buoy point absorbers or surge devices, which typically absorb only 10-30% of the incident wave energy (Babarit 2010), and which radiate waves in all directions from their own motions.…”

Análise Numérica Da Geometria Da Rampa De Um Dispositivo De Galgamento Onshore Em Escala Real Aplicando O Design Construtal

“…O aumento desta demanda de energia e o acordo de Kyoto, o qual visa reduzir as emissões de gases de efeito estufa, têm aumentado o interesse pelo estudo das fontes renováveis de energia (Beels et al, 2010). Outros benefícios do emprego deste tipo de energia podem ser mencionados, por exemplo, a minimização da exploração de depósitos de combustíveis fósseis e seus impactos ambientais associados (Tolmasquim, 2003).…”

“…Destaca-se alguns testes com protótipos apresentados na literatura, como: Wave Dragon (WD), Wave Plane e Seawave Slote-Cone Generator (Falcão, 2010). Destaca-se, também, alguns estudos numéricos: Beels et al (2010) realizaram estudos numéricos a fim de investigar efeitos de esteira atrás de um único dispositivo WD e, também, investigaram a influência de esteira para uma fazenda com cinco WD. Tedd e Kofoed (2009), realizaram um estudo a respeito de séries temporais de fluxos de galgamento sobre estruturas.…”