Generation of regular and focused waves by using an internal wave maker in a CIP-based model

In this study, further development of an in-house code, named a constraint interpolation profile (CIP)-based model is presented. A momentum source function is introduced as an internal wave maker to generate regular and focused waves accurately without being affected by reflected waves. A self-adaptive source region method is proposed to optimize the width of the momentum source region to different wave conditions. The proposed model is applied to different cases. Test of regular wave reflection from a vertical wall is first carried out. Regular wave decomposition over a submerged breakwater is then simulated. Focused wave generation and propagation over a submerged breakwater are finally studied and compared with a newly performed experiment. Good agreements are obtained. All the results indicate that the CIP-based model with a non-reflection internal wave-maker can work as a powerful tool to study wave-structure interaction in coastal engineering.