Determination of Force Coefficients for a Submerged Rigid Breakwater under the Action of Solitary Waves

We present an analysis related to the evaluation of Morison and transverse force coefficients in case a submerged square barrier subject action solitary waves. To this purpose, two-dimensional experimental research was undertaken wave flume University Calabria, which rigid provided by discrete battery pressure sensors determine horizontal vertical hydrodynamic forces. A total set 18 laboratory tests carried out varying motion law piston-type paddle. Owing low Keulegan–Carpenter numbers tests, regime physical defined dominance inertia loads direction lift one. Through use time series forces undisturbed kinematics, drag, inertia, lift, semi-empirical schemes were calculated using time-domain approaches, adopting WLS1 method for minimization difference between maximum linked phase shifts comparing loads. Practical equations calculate these as function non-linearity introduced. The obtained results highlighted prevalence comparison with ones which, however, prove be fundamental stability purposes barrier. An overall good agreement those calibrated found, particularly positive showed decreasing trend non-linearity, while coefficient underlined initial increasing successive slight trend.