This review focuses on the most suitable form of hydrodynamic modeling for the next generation wave energy converter (WEC) design tools. To design and optimize a WEC, it is estimated that several million hours of operation must be simulated, perhaps one million hours of WEC simulation per year of the R&D program. This level of coverage is possible with linear potential flow (LPF) models, but the fidelity of the physics included is not adequate. Conversely, while Reynolds averaged Navier–Stokes (RANS) type computational fluid dynamics (CFD) solvers provide a high fidelity representation of the physics, the increased computational burden of these models renders the required amount of simulations infeasible. To scope the fast, high fidelity options, the present literature review aims to focus on what CFD theories exist intermediate to LPF and RANS as well as other modeling options that are computationally fast while retaining higher fidelity than LPF.

https://www.mdpi.com/2077-1312/8/1/35/pdf

Efficient Nonlinear Hydrodynamic Models for Wave Energy Converter Design—A Scoping Study

Wave energy converter and large floating platform integration: A review

https://ueaeprints.uea.ac.uk/48544/1/Guyenne_Parau_2014.pdf

Finite-depth effects on solitary waves in a floating ice sheet

The scattering of a fluid-structure coupled wave at a flanged junction between two flexible waveguides is investigated. The flange is assumed to be rigid on one side and soft on the other; this enables a solution to be formulated using mode-matching. It is shown that both the choice of the edge conditions imposed on the plates at the junction and the choice of incident forcing significantly affect the transmission of energy along the duct. In particular, the edge conditions crucially affect the transmission of structure-borne vibration but have little effect on fluid-borne noise. Given the singular nature of the velocity field at the flange tip, particular attention is paid to the validity of the mode-matching method. It is demonstrated that the velocity field can be accurately reconstructed by incorporating the Lanczos filter into the truncated modal expansions. The mode-matching method is thus confirmed as an viable tool for this class of problem.

/pdf/scattering-of-a-fluid-structure-coupled-wave-at-a-flanged-42v3sxdh50.pdf

Scattering of a fluid-structure coupled wave at a flanged junction between two flexible waveguides.

The propagation of flexural gravity waves, routinely used to model wave interaction with sea ice, is studied, including the effect of compression and current. A number of significant and surprising properties are shown to exist. The occurrence of blocking above a critical value of compression is illustrated. This is analogous to propagation of surface gravity waves in the presence of opposing current and light wave propagation in the curved space-time near a black hole, therefore providing a novel system for studying analogue gravity. Between the blocking and buckling limit of the compressive force, the dispersion relation possesses three positive real roots, contrary to an earlier observation of having a single positive real root. Negative energy waves, in which the phase and group velocity point in opposite directions, are also shown to exist. In the presence of an opposing current and certain critical ranges of compressive force, the second blocking point shifts from the positive to the negative branch of the dispersion relation. Such a shift is known as the Hawking effect from the analogous behaviour in the theory of relativity which leads to Hawking radiation. The theory we develop is illustrated with simulations of linear waves in the time domain.

https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.2017.0223

S.C. Mohapatra

Papers

Review of developments in porous membranes and net-type structures for breakwaters and fish cages

Surface gravity wave interaction with elastic bottom

Wave energy dissipation of a submerged horizontal flexible porous membrane under oblique wave interaction

Interaction of ocean waves with floating and submerged horizontal flexible structures in three-dimensions

Surface gravity wave interaction with a submerged horizontal flexible porous plate