#TITLE_ALTERNATIVE#

• Main Author: Darmawan Chendra (101 03 075), Hendrik
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/6212
• Institution: Institut Teknologi Bandung

Abstract: <br /> <br /> <br /> <br /> <br /> This final project studies submerged parallel bars as wave reflector using linear Shallow Water Equation (SWE). Each time an incoming wave enters a region with <br /> <br /> <br /> <br /> <br /> a change of depth, it will scatter into a transmitted wave and a reflected wave. <br /> <br /> <br /> <br /> <br /> This phenomena is first studied in order to find an optimal width of a one bar wave reflector with a certain height. The result show that the optimal width of a bar is an odd number times plus one half multiple of wavelength. Numerical study is carried using the <br /> <br /> <br /> <br /> <br /> Lax wendroff discretization scheme with varying partitions along spatialaxis in order to avoid numerical diffusion error. Comparison between analytical <br /> <br /> <br /> <br /> <br /> and numerical solutions shows a good agreement qualitatively and quantitatively. <br /> <br /> <br /> <br /> <br /> The result from one bar can be generalized into n bar wave reflector. For a system of 2bar wave amplitude is reduced by 27%, and for 4 bar system, incoming wave <br /> <br /> <br /> <br /> <br /> amplitude is reduced by 50%. We conclude that when the wave number of the incident wave and the bars are matched, the amplitude of transmitted wave can <br /> <br /> <br /> <br /> <br /> decrease monotonically towards the shore, suggesting that a parallel bars can serve as a breakwater. We also study the effect of shore where its distance from the bar <br /> <br /> <br /> <br /> <br /> is Lp. We conclude that if Lp is half of the wave length then the transmitted wave will hit the shore with the largest amplitude. <br />