A COUPLING METHODOLOGY TO MODEL NEAR AND FAR FIELD EFFECTS OF STRUCTURES AND ENERGY DEVICES DUE TO WAVE INTERACTION

Vasiliki Stratigaki,David Forehand,Peter Troch

doi:10.9753/icce.v36.waves.47

Vasiliki Stratigaki, David Forehand + Show 1 more

Open Access

https://doi.org/10.9753/icce.v36.waves.47

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Abstract

This study focuses on the numerical modeling of wave fields around structures due to their interaction with waves, with the intention to simulate both the resulting near and far field effects. Examples from the wave energy world are employed such as Wave Energy Converters (WECs), fixed or oscillating devices usually arranged in farms, that interact with the incoming waves and extract wave energy from them. As a result of the hydrodynamic interaction between the devices within a farm (so-called near-field effects), the power absorption of the farm is affected. Moreover, wave dissipation has been observed numerically (e.g. Troch et al., 2010) and in scale tests (e.g. Stratigaki et al., 2014; 2015) between the WEC farm location and e.g. the shoreline (so called far-field effects). These wave field changes can affect neighboring sea activities, coastal eco-systems, the coastline and even coastal defense conditions/parameters.

Highlights

This study focuses on the numerical modeling of wave fields around structures due to their interaction with waves, with the intention to simulate both the resulting near and far field effects
Examples from the wave energy world are employed such as Wave Energy Converters (WECs), fixed or oscillating devices usually arranged in farms, that interact with the incoming waves and extract wave energy from them
Several numerical methods are employed to analyse these wave fields: (a) To simulate physically correct near field effects, wave-structure interactions and wave energy absorption, the approach of models based on Boundary Element Methods (BEM) for solving the potential flow formulation or models based on the Navier-Stokes equations (CFD models) is employed; (b) To investigate far field effects of WEC farms in large areas, the approach of wave propagation models is the most suitable

Summary

Introduction

INTRODUCTION This study focuses on the numerical modeling of wave fields around structures due to their interaction with waves, with the intention to simulate both the resulting near and far field effects. As a result of the hydrodynamic interaction between the devices within a farm (so-called near-field effects), the power absorption of the farm is affected.

Results

Conclusion