Modelling of linear and non-linear two-body wave energy converters under regular and irregular wave conditions

Abstract

This paper studies a two-body wave energy converter oscillating in heave with a floating body of variable geometry connected to a submerged body, which is designed for the specific ocean wave condition with wave excitation frequencies ranging from 0.08 Hz to 0.12 Hz. The study focuses on the parameter and non-linear effects of the converter. Taguchi method has been applied to investigate the system model parameters' influences on the maximum average power output. ANSYS AQWA is employed to obtain the hydrodynamic parameters for calculating the output power. Both linear and non-linear dynamic models of the two-body wave energy converter will be analysed and simulated in both the time and frequ..