波による渦流れを利用する低反射式鉛直混合促進型護岸について

抄録

In this study, a low reflective dike that aims sea water mixing and diffusion along the vertical direction in a semiclosed bay is intended for development through the use of wave energy as a driving force. A water chamber type dike comprised of a row of vertical walls of different drafts and a submerged horizontal plate was proposed as a typical structure in order to be able to utilize piston mode wave resonances and resultant vortex generations for the effective vertical mixing. Especially, a wedge section of the front wall was adopted to induce the mean current along the vertical direction of the structure as a resultant effect of asymmetrically generated vortex flows at the mouth of the water chamber. Additional function of the structure as a low reflective dike was also examined.