Abstract

AbstractThis research investigates the average efficiency of an L-shaped duct oscillating water column wave energy converter device (OWC-WEC) under the irregular incident waves environment. The OWC-WEC is situated over a uniform bed. To model the irregular incoming waves, the Pierson–Moskowitz spectrum with two most probable sea states is considered. To solve the problem, the boundary element method (BEM) is used. To study the efficiency of the L-shaped duct OWC device, free surface elevations outside, and within the device chamber, the average efficiency of the device are plotted as a function of the turbine damping coefficient. Moreover, the effects of chamber length, submergence depth, front wall protrusion length, and thickness of the OWC device on the performances are analyzed.KeywordsDuct-shaped OWCBoundary element methodWave energyWave spectrum

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