Estimation of Extractable Energy from the Waves by Developing Artificial Rip Currents

T Today, many schemes are being considered for using renewable sources of energy such as ocean wave energy. While the Caspian Sea, for example, has waves that do not hold much energy for extraction purposes, if waves energy of the sea could be augmented, a greater amount of energy could be possible. In our research, we model the natural phenomenon of rip currents to achieve this objective. We used MATLAB for simulations and MIKE for meshing and topography in modeling rip currents, while considering different variables including: significant wave height and period of incident waves, sea bottom slope, height of rip channel, and channel gap. From the data, we calculated the amount of extractable power. Our results show the rate of water flow in the channel at different depths at 36 different points. We used a program written in MATLAB to show the flow rate and power generated from the simulated channel. Our findings indicate that the optimum condition can be achieved when the significant wave height is 1.5m, period is 5sec, sea bottom slope is 7.5%, height of channel is 4.95m, distance from channel to beach is 75m, and channel gap is 10m. When these conditions are applied to a width of 100m, 30kW power can be expected and in 23test cases, we found a reasonable outcome. The variables with the most important effects on changes in power extraction were wave height and channel height. Moreover, in the cases we investigated, power ranged from approximately zero to 29.2Kw, and in four cases, it was greater than 17Kw.