Abstract
This paper presents and discusses the results of experimental investigations using both vertical and sloping seawalls configurations to determine the optimal wave reflection characteristics of seawalls for protecting beaches against erosion under a variety of hydrodynamic conditions. The different experiments include both of rectangular or triangular serrated blocks and slotted seawalls with or without triangular serrations as energy dissipaters. The linear wave theory is utilized. Moreover, the Dalrymple method is considered to predict the ordinates of the resultant standing wave due to the partial wave reflection. Using the dimensional analysis, lab measurements, and SPSS, predictive formulae are proposed to predict the reflection coefficient for the five tested models by using SPSS software. The findings of the present investigation could be applied to optimize the design criteria of shore protection structures.
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