NUMERICAL STUDIES OF DAMBREAK FLOWWITH AN OBSTACLE THROUGH DIFFERENT GEOMETRIES

• Main Author: Afif Aulia Hariz, Ahmad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/55037
• Institution: Institut Teknologi Bandung

In this research, we investigate dambreak phenomenon using the shallow water equation that is derived from the mass conservation equation and the momentum balance equation. The derived shallow water equation is solved numerically using a staggered finite volume method. In addition, the numerical scheme that is constructed can be extended for varying topography (in this case it is called obstacle in the downstream) and varying channel width case. To validate our numerical schemes, the author compare the numerical results with the analytical solution and the experimental data in (Mungkasi dkk., 2018). After obtaining good agreement, the author also made comparisons with experimental data on dambreak flow through the obstacle-trapezoid, triangle, and the cross-sectional width that experienced contractions. Moreover, we can claim that the scheme can be used to investigate cases for various topographies and various downstream channel contractions. Further, the author concludes that the height of the obstacle is the most influencing factor on the water level downstream and the position of the channel contraction and the obstacle has no significant effect on the water level downstream.