Numerical Study on Focused Wave Interactions with a Moored Floating Structure

Accurate prediction of the motion of a wave energy converter and the loads acting on it is of great significance in the design procedure. In this work, the interaction between focused waves and a hemisphericalbottomed buoy is simulated using the in-house CFD solver naoeFOAM-SJTU. The time histories of three focused waves at several positions are presented and compared with experimental data from the CCP-WSI working group. The effects of wave steepness on motion responses of the hemispherical-bottomed buoy and the loads in the mooring system are presented and discussed.

[1]  Lance Manuel,et al.  On Efficient Long-Term Extreme Response Estimation for a Moored Floating Structure , 2018, Volume 3: Structures, Safety, and Reliability.

[2]  Ryan G. Coe,et al.  REVIEW OF METHODS FOR MODELING WAVE ENERGY CONVERTER SURVIVAL IN EXTREME SEA STATES , 2014 .

[3]  C. W. Hirt,et al.  Volume of fluid (VOF) method for the dynamics of free boundaries , 1981 .

[4]  王建华,et al.  Numerical simulation of pure yaw motion using dynamic overset grid technology , 2016 .

[5]  Claes Eskilsson,et al.  CFD Simulation of a Moored Floating Wave Energy Converter , 2013 .

[6]  Alison Raby,et al.  Physical modelling of wave scattering around fixed FPSO-shaped bodies , 2016 .

[7]  Henrik Bredmose,et al.  Breaking wave impacts on offshore wind turbine foundations: Focused wave groups and CFD , 2010 .

[8]  Yong Li,et al.  Regular and irregular wave impacts on floating body , 2012 .

[9]  Decheng Wan,et al.  CFD Investigations of Ship Maneuvering in Waves Using naoe-FOAM-SJTU Solver , 2018, Journal of Marine Science and Application.

[10]  Decheng Wan,et al.  Dynamic overset grids in OpenFOAM with application to KCS self-propulsion and maneuvering , 2015 .

[11]  C. Eskilsson,et al.  Assessment of Scale Effects, Viscous Forces and Induced Drag on a Point-Absorbing Wave Energy Converter by CFD Simulations , 2018, Journal of Marine Science and Engineering.

[12]  Mats Leijon,et al.  Wave Loads on a Point-Absorbing Wave Energy Device in Extreme Waves , 2015 .

[13]  Edward Jack Ransley,et al.  Survivability of Wave Energy Converter and Mooring Coupled System using CFD , 2015 .

[14]  Alison Raby,et al.  Survivability of wave energy converters using CFD , 2017 .

[15]  Claes Eskilsson,et al.  Coupled mooring analysis for floating wave energy converters using CFD: Formulation and validation , 2016 .

[16]  Lu Zou,et al.  Numerical investigation of vortex-induced motions of a paired-column semi-submersible in currents , 2018, Ocean Engineering.

[17]  Agnese Paci.  Numerical analysis of floating structures for off-shore and harbourengineering , 2018 .

[18]  Jan Westphalen,et al.  Extreme wave loading on offshore wave energy devices using CFD , 2009 .

[19]  Hugh Wolgamot,et al.  Nonlinear hydrodynamic and real fluid effects on wave energy converters , 2015 .

[20]  Carl Trygve Stansberg,et al.  Breaking Wave Impact on a Platform Column: An Introductory CFD Study , 2011 .

[21]  Junhui Lou.  Numerical Simulation, Laboratory and Field Experiments, Analysis and Design of Wave Energy Converter and Mooring System , 2017 .

[22]  Mats Leijon,et al.  Azimuth-inclination angles and snatch load on a tight mooring system , 2012 .

[23]  W. Decheng,et al.  Numerical study of 3D flow past a circular cylinder at subcritical Reynolds number using SST-DES and SST-URANS , 2016 .

[24]  I. Penesis,et al.  Non-linear CFD modelling of a submerged sphere wave energy converter , 2016 .

[25]  Alison Raby,et al.  Snatch loading of a single taut moored floating wave energy converter due to focussed wave groups , 2015 .