CIRCULAR CHANNEL BREAKWATER TO REDUCE WAVE OVERTOPPING AND ALLOW WATER EXCHANGE

Dal See Lee, Woo Sun Park, Nobuhisa Kobayashi

Abstract


A new type of breakwater caisson is presented for improving water quality in a harbor. Circular resonance channels connected with flow conduits in the caisson cause clear sea water inflow into a harbor through the conduits. The hydraulic characteristics of this caisson with respect to wave reflection, overtopping and transmission appear excellent compared with those of conventional caissons. The potential of water quality improvement is great due to its high efficiency in normal wave conditions. A simple resonance model is developed to identify an important dimensionless parameter. Experimental results show that the new concept of circular channel breakwater is promising in terms of its hydraulic performance.

Keywords


channel; channel breakwater; breakwater; overtopping; water exchange

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