Wave power

About: Wave power is a research topic. Over the lifetime, 2671 publications have been published within this topic receiving 41439 citations. The topic is also known as: wind wave energy & sea wave energy.

2D Numerical Simulation of Ocean Waves

Abstract: As fossil energy is depleting and global warming effect is worsening rapidly, developing renewable energies become the top priority on most developed and some developing countries. Among different kinds of renewable energies, wave energy attracts more and more attention in recent years due to its high energy density and enormous global amount. However, some technical difficulties still need to be overcome for extracting wave power. In designing a wave energy converter, it is important to develop an efficient method to determine the wave load and predict its response. In this paper, a n umerical investigation of ocean waves is presented. Commercial software code FLUENT is used as a computational platform in this study. Based on the NavierStokes equations for viscous, incompressible fluid and Volume of fluid (VOF) method, a two dimensional numerical wave tank is established. Dynamic meshing method is used to simulate the wave maker, and GeoReconstruct scheme is used to capture the free surface. A wave-absorbing method employing porous media model is proposed, which can absorb the wave energy efficiently. Moving boundary, wall boundary and pressure-inlet boundary are used to construct the computational domain. Linear regular waves are simulated accurately using the proposed numerical model. The numerical results matched with the theoretical calculation.

The Q.U.B. Axisymmetric and Multi-Resonant Wave Energy Convertors

Abstract: This paper describes the optimization of the power conversion chain and the engineering design considerations of an oscillating water column wave power device which would form part of a 2-GW power station. Novel features of the principal device described include the multi-resonant concept, which considerably widens the frequency bandwidth response, and the use of the simple highly efficient Wells self-rectifying air turbine in the secondary power conversion stage. It is concluded that using established technology wave power stations comprising sea bed mounted reinforced concrete structures could produce power for as little as 1.3p per kW-hr after the initial capital repayment period and thus the economics are similar to that of hydro-electric power.

Update - Ocean Power Catches a Wave

Abstract: Three snakelike wave-power generators built by Edinburgh's Pelamis Wave Power delivers 2.25 megawatts through an undersea cable to the Portuguese coastal town of Agucadoura. Within a year, another 28 generators should come online there, boosting the capacity to 22.5 MW. That may be a trickle of power, but the project represents a new push into wave and tidal power as governments eye the oceans as a way to meet their renewable energy targets.

The Concept of a Bipartite Point Absorber

Abstract: A new wave power device is presented in the form of a bipartite point absorber. A simplified linear theory is used to demonstrate its satisfactory performance. An elaborate third-order theory however throws more light on the beneficial interactions between the composing parts, and on the strong nonlinear effects, which influence the power absorption in a negative way.