NUMERICAL SIMULATION OF TIDAL BORE IN SYNTHETIC CANAL

• Main Author: LUTHFI SIDDIQ (NIM : 12913003), NABIEL
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/29437
• Institution: Institut Teknologi Bandung

The objective of this study is to learn the influences of tidal bore propagation in 1D canal on elevation, wave parameters, and flow velocity profile, also influences of differences in initial depth (d_1), initial flow velocity (V_1), and froude number (Fr) on the resulting tidal bore using OpenFOAM Model. The numerical domain used in this study is based on domain of physical model from reference of this study. Eleven scenarios are performed based on d_1, V_1, and Fr difference: Scenario A1-A4 with constant V_1 and d_1 varies for each scenarios; Scenario B1-B4 with constant d_1 and V_1 varies for each scenarios; Scenario C1-C4 with constant d_1 and V_1 varies for each scenarios, with V_1 value ranging broader than Scenario B1-B4 to produce broader range for Froude number. The result is verified by comparing with the physical model’s result and numerical model using Thetis based on recent study. Verification result shows a good agreement between present study and both physical dan numerical model, with phase differences identified because of imperfection of canal used in physical model and both differences in grid size and boundary condition used, respectively. Simulation result shows that Froude number becomes an indicator of the tidal bore type, but it is not directly affect tidal bore characteristics. Initial flow velocity (V_1) and initial flow depth (d_1) are identified as the dominant factors that influences tidal bore characteristics. Propagation of tidal bore in canal causes increase in depth, zone of flow reversal underneath tidal bore peak, and flow velocity intensification near bed. <br />