Prof. Gamal Helmy Mohamed Elsaeed :: Publications:

Recent years have noticed a great increase in the services needed for the design of major sea defenses and coast protection works to solve coast problems. As an important aspect in the design of shore improvement measures, is the effect resulting on the beach from placing walls or any other defenses in the zone reached by wave and current action. in this study we have treated experimentally the effect of one of the protection structures on the morphology of sea bed; this structure is the seawall. The effect of the seawall position on the profile of seabed before the wall was studied using vertical and inclined walls. Experiments were achieved using different wave steepnesses, different beach, slopes and different wall positions and inclinations. The analysis of the results led to some important graphical relations between different dimensionless parameters. The study of these relations showed how each variable is affected by the other variables. It was found that existence of seawalls causes more deposition of bed material and so more accretion in the nearby region to the seawall. It was also found that the beach profile after obtaining the equilibrium state has approximately the same shape for different cases of beach slope.