Development of Wavy Interface model for wave generation by the projection-based particle methods

摘要

The paper presents a novel wave boundary model, namely Wavy Interface model, abbreviated as WI, for the particle methods by directly modelling the target wave fronts. In practical engineering problems, the information of the design waves as an input boundary is limited to only the wave heights and periods. To accommodate the situations, the proposed Wavy Interface model is designed to omit a usual tuning process by keeping the desired wave front through generation/removal of the particles around the free surface. The good reproducibility of the Wavy Interface model is shown through benchmarks targeting regular, irregular and solitary waves. Verification is made in terms of reproduced free-surface profile, velocity and energy fields. In addition, simulations of overtopping waves show the good conservation of the water level by the Wavy Interface model. The Wavy Interface model is shown to be a proper wave generation model in a numerical wave flume to generate waves as precise as the conventional wave paddle model and with considerable reduction of CPU time.