APPLICATION OF THE DUPUIT-FORCHHEIMER LAW TO PERFORMANCE EVALUATION OF SLOPING BREAKWATERS WITH WAVE DISSIPATING BLOCKS

Abstract

 Wave dissipating blocks should be designed so that the hydraulic performances can quantitatively be reflected for coastal protection and disaster prevention. In this study, hydraulic model experiments are carried out to evaluate the reflection and transmission coefficients for sloping breakwaters. Numerical simulation with CADMAS-SURF/2D is conducted to reproduce the measured results. The applicability of the Dupuit-Forchheimer law is investigated through the numerical simulation. The optimum values of the coefficients in the Dupuit-Forchheimer law are estimated. When the coefficients proposed in previous studies were used in the numerical simulation, the reproducibility was not sufficient in several conditions. In this study, the reproducibility was improved by adjusting the coefficients according to the incident wave period.