Author(s): Fangfang Zhu; Nicholas Dodd; Riccardo Briganti
Linked Author(s):
Keywords: No Keywords
Abstract: This work presents a numerical investigation of multiple swash events using the Nonlinear Shallow Water Equations (NSWEs) to study the swash-swash interaction processes and their impacts on the beachface evolution. The multiple swash events are generated by identical solitary waves at the seaward boundary separated by various time intervals to achieve different swash-swash interactions. The results show that the weak swash-swash interaction allows the previous swash event to be nearly completed with substantial offshore sediment caused by the backwash flow leading to considerable erosion in the middle swash zone, and deposition in the lower swash zone. While in the strong swash-swash interaction, the incoming flow of subsequent wave interacts with the previous backwash flow, which reduces the offshore sediment transport, resulting in much less erosion in the upper and middle swash zone and less deposition in the lower swash zone.
Year: 2022