NUMERICAL MODEL EFFECT OF BREAKWATER ON RUNUP WAVE
In this research, the writer wants to analyze the optimal breakwater size in reducing runup wave height. Runup waves are the high water levels achieved due to the waves that hit the coast or beach buildings which are calculated from the elevation of calm water levels. High runup waves are the mai...
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id-itb.:477102020-06-17T18:03:45ZNUMERICAL MODEL EFFECT OF BREAKWATER ON RUNUP WAVE Listya Elfandana S, Josephine Indonesia Final Project runup, submerged breakwater, shallow water equation, runup coefficient. INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/47710 In this research, the writer wants to analyze the optimal breakwater size in reducing runup wave height. Runup waves are the high water levels achieved due to the waves that hit the coast or beach buildings which are calculated from the elevation of calm water levels. High runup waves are the main cause of the phenomenon of abrasion. The phenomenon of abrasion is one of the causes of coastal damage, so we need a solution to reduce abrasion so that the beach will function properly. The height of the wave wave can be reduced using a breakwater. In this final project, the breakwater used is a submerged rectangular breakwater. The shape of the beach used is a beach with one slope. To find out the optimal breakwater in reducing the runup wave, the runup coefficient is used. This is the ratio between the height of the runup wave and the amplitude of the initial wave or R/Am. In addition, to find out the optimal breakwater in numerical wave reduction, a sufficient ratio of wavelength and wavelength ratio is used by comparing numerical and experimental results conducted by Shing Tony (2014). From the results of the validation of numerical simulations with analytic solutions, an error for the R/Am value is quite small. The optimal breakwater size of the analytical solution can be determined by looking at the smallest R/Am value. The numerical simulation results are then validated by Shing Tony’s (2014) experiment, and it is found that the runup height value error is quite small. This means that numerical simulations can visualize the phenomenon well. From numerical simulations, an optimal breakwater size can also be determined based on incoming wavelengths. text |
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In this research, the writer wants to analyze the optimal breakwater size in reducing
runup wave height. Runup waves are the high water levels achieved due to the
waves that hit the coast or beach buildings which are calculated from the elevation
of calm water levels. High runup waves are the main cause of the phenomenon of
abrasion. The phenomenon of abrasion is one of the causes of coastal damage, so
we need a solution to reduce abrasion so that the beach will function properly. The
height of the wave wave can be reduced using a breakwater. In this final project,
the breakwater used is a submerged rectangular breakwater. The shape of the beach
used is a beach with one slope. To find out the optimal breakwater in reducing
the runup wave, the runup coefficient is used. This is the ratio between the height
of the runup wave and the amplitude of the initial wave or R/Am. In addition,
to find out the optimal breakwater in numerical wave reduction, a sufficient ratio
of wavelength and wavelength ratio is used by comparing numerical and experimental
results conducted by Shing Tony (2014). From the results of the validation of
numerical simulations with analytic solutions, an error for the R/Am value is quite
small. The optimal breakwater size of the analytical solution can be determined
by looking at the smallest R/Am value. The numerical simulation results are then
validated by Shing Tony’s (2014) experiment, and it is found that the runup height
value error is quite small. This means that numerical simulations can visualize the
phenomenon well. From numerical simulations, an optimal breakwater size can
also be determined based on incoming wavelengths. |
format |
Final Project |
author |
Listya Elfandana S, Josephine |
spellingShingle |
Listya Elfandana S, Josephine NUMERICAL MODEL EFFECT OF BREAKWATER ON RUNUP WAVE |
author_facet |
Listya Elfandana S, Josephine |
author_sort |
Listya Elfandana S, Josephine |
title |
NUMERICAL MODEL EFFECT OF BREAKWATER ON RUNUP WAVE |
title_short |
NUMERICAL MODEL EFFECT OF BREAKWATER ON RUNUP WAVE |
title_full |
NUMERICAL MODEL EFFECT OF BREAKWATER ON RUNUP WAVE |
title_fullStr |
NUMERICAL MODEL EFFECT OF BREAKWATER ON RUNUP WAVE |
title_full_unstemmed |
NUMERICAL MODEL EFFECT OF BREAKWATER ON RUNUP WAVE |
title_sort |
numerical model effect of breakwater on runup wave |
url |
https://digilib.itb.ac.id/gdl/view/47710 |
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1822927732741242880 |