A storm surge barrier is a specific type of floodgate,designed to prevent a storm surge or spring tide from flooding the protected area behind the barrier.A surge barrier is almost always part of a larger flood protection system consisting of floodwalls,dikes,and other constructions.Surge barriers allow water to pass under normal circumstances but,when a (storm) surge is expected,the barrier can be closed.Among the various means of closing,buoyant flap typed storm surge barrier which was indicated by MOSE project in Italy is chosen for Masan bay protection,and the motion of the surge barrier under the action of storm surge and wave is examined using FLOW-3D,a computational fluid dynamics software analyzing various physical flow processes.Numerical result shows that storm surge barrier is successfully operated under wave height 3 m,and tidal range 2 m.
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