Wave-farm impacts on the wave characteristics and wave-resource characterization: A case study

Le résumé fourni par la source

The structured-grid Simulating Waves Nearshore (SWAN) model (resolution ∼450 m and ∼35 m) was used to assess the impact of five Wave Dragon wave-energy converters (WECs) on wave conditions and wave resources on the coast at Vung Tron, Vietnam. Four scenarios were considered: a baseline scenario (no wave farm) and three wave-farm scenarios with installations at water depths of 25 m, 30 m and 35 m, respectively. Each scenario was analyzed over a seven-year period from 2010 to 2016 and during the passage of Tropical Depression Wilma on the 6 th November 2013. While the wave period did not differ significantly in the two periods, significant wave height and wave power decreased substantially. The wave farm caused a notable decline in these wave parameters in its lee. The closest wave farm to the coast reduced the significant wave height most at the reference 10m-depth contour, but it had the lowest wave-energy availability. However, there was no significant decrease in significant wave height in the surf zone (water depth <5m). Additionally, the results along the 10m-depth contour showed the western and southwestern areas behind the wave farms were the most sheltered by them. • Impacts of wave farms on wave characteristics in the Vung Tron area, Vietnam. • Wave energy declined in the lee of a wave farm. • Wave resources changed during a tropical depression because of the wave farm.

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