Abstract
In order to understand characteristics of overflow, we simulated with a wave-simulating numerical flume that sea water flowed over seawall. The numerical flume was CADMAS-SURF, which could simulate water flow in vertical cross-section by using Volume Of Fluid Method. The simulations executed under no-wave condition considerably reproduced flow rates calculated by Honma's fomula (1940). Flow rates under wave condition were higher than under no-wave condition. Its increasing tendency in complete overflow was higher than in submarged overflow. Flow rates over thin wall was higher than over thick wall in complete overflow. In submarged overflow, obious difference between thin wall and thick wall was not observed.
