Abstract
From view point of operation and maintenance, it is a very important issue to survey durability of salt corrosion of coastal structures. Although accurate prediction of quantity of sea spray which attaches surface of coastal structures, the generation process of sea spray when waves attack the structures such as a pier and a sea wall has not been known yet. In this study, laboratory experiments were carried out by using three high-speed cameras to capture images of generation process of spray when regular waves attack an impermeable vertical wall on 1:30 slop. From every captured image, diameter and location of each spray and the number of generated spray were obtained.
According to experimental results, it was found that the number of generated spray had a peak until t*=0.15 after waves attacked a vertical wall and that the number of spray depended on wave conditions. The time when the number of spray began to increase and the increase rate also depend on wave parameters. The mode value of diameter of generated spray distributed between 0.002m to 0.003m, which didn't depend on wave conditions.
