THE BREAKWATER USING THE HELMHOLTZ'S MESOMERISM TO EXECHANGE SEA WATER

摘要

PURPOSE: A sea water exchange type breakwater is provided to promote circulation and exchange of sea water inside a harbor utilizing a principle of a Helmholtz resonance device controlling acoustic wave in acoustics. CONSTITUTION: A primary resonance frequency and a frequency of incident wave are matched among natural frequencies of incident frequency by constituting an inlet(20) and an amplifying chamber(21) connected with the inlet(20) at an outer wall of open sea of breakwater. And the amplifying chamber(21) and a seawater inducing path(22) penetrated into harbor are defined to introduce seawater into harbor with positional energy of amplified wave in the amplifying chamber(21) for promoting circulation of seawater inside the harbor. A resonance structure(30) is regularly aligned in a vertical direction of proceeding direction of wave to constitute a breakwater applying seawater exchange applying Helmholtz resonance principle. Thus fresh outer seawater is supplied into the harbor to improve water quality and circulation action is accomplished.