Numerical Simulation Of Wave Energy Conversion Of Inverse Pendulum

Ocean energy, which contains rich resources, is renewable energy stored in the seawater. It has the resource condition and technical potential for large-scale mining to supply adequate resources for the future social and economic development. The sea area of Zhoushan Archipelago in Zhejiang province, which is rich in wave energy resources, is targeted as the study area and wave energy converter of inverse pendulum as the research object.This paper is mostly about simulation aimed at rectangular, square, and round pendulum according to airy wave theory and the frequency domain analysis method and the simulation results will be compared and analyzed so as to provide valuable theoretical basis for engineering practice application and further optimization research. The main content of this paper is as follow:(1) It discusses the basic theory of wave, introduces the airy wave theory adopted in practical engineering, solves the basic equations of wave surface and describes wave velocity potential, wave speed,wave length and movement locus of the shallow water wave, medium wave, and deep-water wave.Then it introduces the frequency domain solution of wave functioned by two-dimensional objects, using analytical method. velocity potential range on both sides of inverse pendulum motion process is gained by using the given boundary condition to get a better view pf hydrodynamic performance of inverse pendulum influenced by complex reflection and diffraction in practical sea area.(2) First it talks about the basic composition of wave energy converter of inverse pendulum with the four aspects of airfoil of inverse pendulum, hydraulic system/ pressure system, hydraulic/pneumatic motor and generator system. Then it analyzes basic condition of sea area of our country and selects the sea area of Zhoushan Archipelago in Zhejiang province as research area, which is abundant in wave energy resources. Finally it calculates the force condition and hydrodynamic performance of wave energy converter respectively functioned by micro amplitude wave and frequency domain analysis model.(3) It compares and analyzes the results of three models functioned by micro amplitude wave and frequency domain analysis model after getting the simulation results of rectangular, square, and round pendulum under the action of virtual prototype analysis application software ADAMS.The results show that the wave force, horizontal displacement, changes of horizontal velocity and the force of left and right hydraulic cylinders of the round pendulum are the biggest. The square one the second while the rectangular one the smallest. So it is better for power generation of wave energy converter to choose the round pendulum as the final pendulum model.