RUN-UP MODELING AND SIMULATION WITH DIFFERENT TYPES OF WAVE PROFILES

• Main Author: Sultanjaya, Nathanael
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/83482
• Institution: Institut Teknologi Bandung

As the largest archipelago in the world, Indonesia is quite vulnerable to disasters caused by ocean waves. To anticipate this, it is necessary to know the wave run-up, which is the maximum height that a wave reaches when it reaches the shore. This final project examines the problem of wave run-up on sloping beaches for various incident wave profiles from a mathematical modeling point of view. The wave model used is the nonlinear shallow water equation assuming the beach profile is an inclined plane. The model is solved numerically using the finite volume method on staggered grid. The numerical results are validated using the analytical solution derived by Carrier-Greenspan. Furthermore, the numerical method is used to simulate the wave run-up for periodic waves, Gaussian waves, as well as N-waves. From the simulation results, the relationship between run-up height, incident wave amplitude, and wave frequency for each type of wave is obtained. Based on the simulation results, for the same wave parameters, periodic waves produce the highest run-up while Gaussian waves (for wave frequency variation) and N-waves (for incident wave amplitude variation) produce the lowest run-up.