不規則波に対する垂下板式反射波低減工の波浪制御効果について

抄録

A new typeofdissipaterofreflected waves from vertical walls was proposed. The sectionofthis dissipater is very simple, which comprises a vertical barrier on the front and a vertical wall on the back. Performance of this dissipater was examined experimentally and theoretically for both regular and irregular waves. The dissipation mechanism of reflected waves is to enhance the vortex flow under the front curtain wall by the piston-mode wave resonance in the water chamber. Major advantage of this new dissipater is to be able to decrease the breadth of the water chamber, say 1/10 of a wave length. Therefore, it is possible to dissipate much longer waves by the new dissipater having the same size as the conventional perforated type. Another advantage may be easy berthing of ships to the dissipater because of a flat front wall without any holes and slits.