System identification (SI) techniques represent an alternative strategy to provide the hydrodynamic model of oscillating water column (OWC) devices, compared more traditional physics-based methods, such as linear potential theory (LPT) and computational fluid dynamics (CFD). With SI, parameters are obtained, by minimizing a model-related cost function, from input-output data. The main advantage...

In this paper, we investigate the quintessence models with an oscillating equation of state (EoS) and their potentials. From the constructed potentials, which have the EoS of ωφ = ω0+ω1 sin z, we find they are all the oscillating functions of the field φ, and the oscillating amplitudes are decreasing (or increasing) with φ. From the evolutive equation of the field φ, we find this is caused by t...

Wave energy converters(WECs) integrated into floating breakwaters or, more generally, their designs also used as wave absorbers can provide a space- and cost-sharing solution to enhance the efficiency of coastal protection. In this study, hydrodynamic performances an oscillating buoy(OB)-type single-pontoon breakwater(SPFB) water column(OWC)-type dual-pontoon breakwaters(DPFB) are evaluated, re...

1. Absorption of waves means generation of waves. A body oscillating in water will produce waves. A big body and a small body may produce equally large waves provided the smaller body oscillates with larger amplitude. This may be utilised for the purpose of wave energy conversion, for instance by a small floating body heaving in response to an incident wave, in particular so if it can be arrang...

We propose in this paper a new nonlinear mathematical model of an oscillating water column (OWC). The one-dimensional shallow equations the presence device are reformulated as transmission problem related to interaction between waves and fixed partially immersed structure. By imposing conservation total fluid-OWC energy non-damped scenario, we able derive condition that involves time-dependent ...