For water wave energy harvesting by the piezoelectric material, this material should be located at a position to be strained from wave motion. The simplest structure that can be used for creating this strain is a cantilever energy harvesting. Water channel and plunger-type wavemaker are instruments beam. Investigation of wave and cantilever beam is an introduction to wave that are used for the investigation of wave behavior in the laboratory. water channels costs very expensive. Thus it is important to detect a numerical Production of different wavemakers in several sizes and fabrication of long toolbox that can simulate waves in the water channel. In this report, OpenFOAM channel and wavemaker is studied. The interFoam solver is one of the solvers in as an open-source software is used to study the waves created with plunger-type wavemaker. The effect of different parameters that are related to the water good accuracy. If the wave does not fall, increasing in wedge tip angle and OpenFOAM and this solver uses the volume of fluid method for free surface flows. The results show the error is less than ten percent and the run time is centimeters height and 5.5 meters length, this solver shows good results with lower than ten hours for a mesh with 30,000 cells. In a channel that has 60 another solver in OpenFOAM that is used and this solver results show error initial submerged depth and frequency and stroke and water depth can cause increase in wave height. One sloped plate is located at the end of the water channel and lower than ten percent. After the simulation of water channel waves, the wave the results show this plate can absorb the waves. The interflow solver is were also considered for wave generation and wave absorption that can create or and structure interaction is simulated. The foam-extend toolbox is used for this problem but the results are not suitable. Although the use of this software has not been effective, studies have been done on new solvers that such solvers have a high chance of solving such a problem. Various tools for wave generation in wave and structure interaction problem. absorb the wave by using suitable boundary conditions or creating a comfort zone. These tools can be used to reduce the computation costs and can be used Keywords: Free surface wave, Water Channel, Plunger type wave maker, Fluid Structure Interaction, OpenFOAM, Foam-Extend
