Abstract
This paper examines dissipation of tsunami due to overflow over different shapes of dike by hydraulic experiments. The experimental results were compared and validated against the classical theory of weir. Experimental results showed that a dike with slope on upstream side and vertical back side is the most effective to reduce the tsunami energy. A numerical model was used to simulate a series of experimental results. Most of test results were successfully simulated; however, for the condition that nappe flow appears, the numerical model should be improved for the accurate estimation of energy dissipation.
