Constructal design of an onshore overtopping device in real scale for two different depths

In this work, a 2D numerical study was performed on the effect of the ramp geometry on the performance of an onshore overtopping device in real scale employing constructal design. More precisely, it evaluates the effect of ratio between height and length of the ramp (H 1/L 1) over the mass of water (m) entering the reservoir for two different depths (S = 5.0 m and 6.0 m). For all simulations, the ramp device area is maintained constant. A computational model based on the finite volume method and volume of fluid to tackle with the mixture of water/air was employed. The once maximized mass entering reservoir (m m) increases with S, as expected. However, the best geometries changed with the device depth (S), showing that there is no universal shape that maximizes the performance of the wave energy converter device. The submergence also presented a strong influence over the transient behavior of the mass flow rate of water entering the reservoir of the overtopping device.