Abstract
Wave reflection characteristic by a curtain-walled dissipater is examined extensively. Especially, focusing on the resonance phenomena of piston mode wave motiom in the water chamber between a rear vertical wall and a front curtain wall, hydrodynamic properties, such as an added mass, are examined theo etically. Using various dimensions of the dissipater, the governing parameters of the added massare examined pecisely. By taking account of the resonance condition of the piston mode motion, a new parameter governing wave reflectioncharacteristics is deduced theoretically. It was confirmed that the new parameter is useful to determinean effective cross section of the dissipater, such as a draft of the front curtain wall and a width of a water chamber for given wave conditions.
