Abstract
This study focuses on the shock wave pressures on a wave dissipating caisson with semi-circular hollowprojections in front of the wall, both theoretically and experimentally. Through a series of experimentsin shallow and deep sea wave conditions, the model of the nonporous semi-circular wall reduces theshock pressure by 20-30% compared with the ordinary caisson of vertical wall and porous typereduces more. Espesially in shallow sea wave conditions, the least shock pressure are obtained when theopening ratio is 30%, the value of the shock pressure is approximately 45% of the same on the verticalwall. A theoretical model of the shock pressure proposed for the nonporous semi-circular wall is verifiedthrough the experiments, and the function of the porous wall are examined by numerical simulation.
