Hydrodynamic Modeiingfor Tanjung Kepah, Perak

The objective ofthis report is to detail the progress ofthe computer simulation of coastal
hydrodynamic, which is MIKE 21. Firstly, a study has been carried out at Tanjung
Kepah, Lumut to study the impacts of wave distribution patterns in that area. Tanjung
Kepah is chosen because there are erosion activities going on at the coast. Tanjung Kepah
is studied and modeled with the MIKE 21 software to provide the best solution to prevent
the erosion acivities. The primary data and secondary data on oceanographical condition,
site topography and bathymetry are collected from various sources. Thus, the existing
hydraulic environment conditions are analyzed based on the parameters relating to
currents, tides, waves and wind. And also, the wave data analysis is carried out to predict
the extreme wave heights in various return periods. The execution of computer modeling
will cover several phases, which are bathymetry modeling, simulation of wave analysis,
and simulation of coastal hydrodynamic incorporated with wave radiation stress. The
simulation has been successfully completed, the results are interpreted and analyzed.
From the analysis, the incoming waves at a distance of 100 meter from the Tanjung
Kepah coast have a maximum wave height of 0.70 meter above ACD during spring high
tide at return period of 50 years. The incoming current flow is 0.22 m/s at 320° during
flood tide and outgoing current flow is 0.27 m/s at 138° during ebb tide. Thus, this report
can be used by the authorities as a reference in order to study the existing coastal
hydrodynamic of Tanjung Kepah and decide the preventive actions to be taken to protect
the coast. Besides that, the authorities can use this report to do a preliminary design of
protective structure, such as breakwaters.