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Nowadays,ocean waves have attracted researchers due to their high energy density compared to other renewable energy resources.If it is extensively employed it may contribute significantly to the electrical energy supply of countries with coasts facing the seas.The mechanical process of energy absorption from the waves requires a moving interface such as party submerged moving body or fully submerged structure.They are moving air-water interface subject to a time-varying pressure,Oscillating water column compresses the air and then excites the piezoelectric ceramic pitch deformation,which produces electricity with the piezoelectric effect.Continuously that deformation supplies renewable energy.The piezoelectric structure needs to be optimized to improve the piezoelectric power generation efficiency.Simulation analysis of the pressure on a piezoelectric ceramic material is applied,from oscillating water column vent.We determine the theoretical expression of mechanical propagating and electrical boundary conditions.Also,we calculate the piezoelectric constitutive equation and the boundary equation.Through the mechanical APDL simulation software,APDL is an acronym for ANSYS parametric design language.This powerful scripting language allows us to parametrize our model and automate everyday tasks ANSYS mechanical APDL Multiphysics software.This simulation program employs the finite element method to solve complex problems.The periodic variation of the voltage and deformation of the piezoelectric ceramic is explored under the variable load force,and the optimal model of rectangular cantilever PZT ceramic power generation,the thickness,and wave height are calculated.This research presents the study of an offshore OWC converter in a 3D flume performance.It implements a linear response of the PTO system.Computational fluid dynamics has performed a simulation analysis of oscillating water column wave converter to determine the efficiency of energy absorption.