Comparison of Pressures Due to Random Waves on Vertical and Curved Seawalls

Abstract

The design of an efficient seawall should be such that the overtopping is minimized even during coastal flooding and extreme events by maintaining its crest elevation as low as possible.It is believed that this could partially be achieved by taming the waves back to towards the ocean, however, not by reflection as in the case of a vertical wall. Curved front face sea walls can be one of the options to fulfil this requirement. Such curved configurations have been chosen for the study and the purpose of comparison the action of random waves on a vertical wall is considered. The experimental investigation on dynamic pressure variation along the surface of the two seawall models placed over a bed slope of I in 30 and subjected to the action of random waves described by the Pierson Moskowitz spectrum were conducted. The results on the variations of dynamic pressures on the seaward face of both the models were compared and discussed.

Tsunami-like Flow-Induced Forces on the Landward Structure behind a Vertical Seawall with and without Recurve Using OpenFOAM

“…Furthermore, introducing these overhangs with the existing structure could reduce the freeboard depth [19]. In addition, the benefits of altering the seaward shape of the seawall for efficient reduction of overtopping along with the reduction of impact force experienced by the coastal structure due to the wave loads have been investigated by many-c.f., [20][21][22].…”