![]() ![]() Conference: Coastal Engineering 2002 - Solving Coastal Conundrums - 28th. Stability formulae for armour layers of rubble mound breakwaters are generally developed for perpendicular wave attack and do not include effects of oblique waves. ![]() The developed numerical model can be used to evaluate the random wave overtopping in design of rubble mound breakwater with artificial armor blocs. A NEW PROCEDURE FOR THE SCALING OF CORE MATERIAL IN RUBBLE MOUND BREAKWATER MODEL TESTS. As a result, one can forecast stability number, or design breakwaters, more accurately than any model can predict, with a R 2 of 0.945, followed by van der Meer’s approach and Mase et al. The models were built with a main armour layer of rocks or cubes and a core composed by finer rock and most models also included a filter layer (see Fig. This study is the first either to address the use of FL modeling technique for designing rubble mound structures and to score off the Van der Meer’s empirical model. This analysis gives ®-values which indicates the influence of each input variable on the failure probability of the rubble mound breakwater. The results show good agreement between the simulated and measured overtopping discharge rates for different types of armor units. Four configurations of a conventional rubble mound breakwater were tested in the Wave Flume of Aalborg University. Random wave overtopping of rubble mound breakwater with armor units is simulated through the proposed model. Grids independence analysis are carried out, the horizontal and vertical grid size are recommended to take as one-fifteenth of the mean nominal diameter D 50 of the armor units and one-fifteenth of the wave height respectively. Rubble-mound breakwaters are often pre-designed with empirical formulae allowing the estimation of armour stone size or weight, taking into account the wave conditions (mainly a characteristic wave height and a characteristic period), the type and density of stone or block used, the slope of the mound, the acceptable level of damage, etc. The volume-averaged RANS equation and the seepage equation containing nonlinear term are used to describe the percolation in the core and underlayer of the breakwater. The armor units with their real geometries are depicted through computational grids. Determining the optimum weight of the armour blocks is the most important issue in designing the break water. Based on the open source code OpenFOAM, a three-dimensional model is presented for simulation of the interaction between waves and rubble mound breakwater with armor units. A numerical study for the effect of crest width, breaking parameter, and trunk permeability on hydrodynamics and flow behavior in the vicinity of rubble-mound, permeable, zero-freeboard breakwaters (ZFBs) is presented. ![]()
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