A Shoreline Evolution Model With the Wavelength Effect of Breaking Waves on Groin Structures

Abstract

Local sea level rise, strong wave action, and tidal currents all wear down or carry away rocks, soil, and sand along the beaches. The quantity of beach areas has decreased as a result of this issue. Analyzing the progression of the shoreline can help us better understand how the beach will look in the future. A groin structure was built to stop beach erosion and repair the beach. Beach erosion and beach deposition research requires a qualitative analysis of the model shoreline behavior in connection to the governing process. Models for shoreline evolution are the subject of some research. However, they focus on the shoreline evolution in an area between a couple of groin structures. The investigated area of shoreline evolution with a pair of groin structures is enlarged in this research to include the groin system and surrounding area. A more realistic shoreline evolution model has been presented, which takes into account the wavelength influence of breaking waves on groin constructions. The initial condition setting approach and boundary conditions techniques, as well as various groin structural impacts, are discussed. A wave crest impact model and five wavelength effects of breaking waves are introduced. Each year, the coastline evolution is approximated using the classical forward-time centered-space method and the unconditionally stable Saulyev finite differential methods. The estimated impacts of shoreline evolution were consistent with the wave crest impact model for five case wavelengths. For assessing long coastline evolution, the numerical models presented enable a reasonable simulation. The efficiency of building a groin system on a nearby beach might be predicted using the proposed modeling.