Abstract
In order to understand effect on overflow rate caused by waves, we simulated with a 2D wave-simulating numerical flume that sea water flowed over seawall on complete overflow condition with waves. The flow rates from the simulations on no wave condition were considerably consistent with overflow rates calculated by Rao & Muralidhar's fomula. On wave conditon, surplus flow rate over seawall caused by waves was undetected when sea level height from top of seawall, h1 was larger than 3m. When h1 was smaller than 3m, the flow rate on wave conditon was larger than on no wave condition. The surplus flow rate caused by waves increased with increasing wave height and height of seawall. And, we developed the formula to estimate surplus flow rate over seawall caused by waves based on the results of numerical simulations, and verified that outputs of the formula fit the simulation results considerably.
