Dynamic Pressure Evaluation Near
Submerged Breakwaters
Author(s)
F. T. Pinto & A. C. V. Neves
Abstract
The increasing use of submerged breakwaters is not only due to their important
role in beach protection, but also because of their low environmental impact. In
their design process, an analysis of the pressure fields (near and along the
structure slope) under wave flow is needed. Although a considerable amount of
research has been conducted in order to improve our understanding of these
structures behaviour and establish reliable formulae for design purposes, several
outstanding questions remain.
This paper aims to present the evolution of dynamic pressure fields when the
structure is submitted to the action of regular incident waves. These pressure
fields are obtained by indirect means, through the measured horizontal wave
flow velocity component as a function of the wave phase and water depth.
Keywords: submerged breakwater, wave-induced pressure fields, dynamic
pressure.
1 Introduction
Submerged breakwaters are used for coastal and harbour structure protection.
They are usually detached and parallel to the shoreline, with their crest heights
fixed below a specified design water level to allow for the passage of some wave
energy. Since they are less vulnerable to wave action and have a lower crest
height, the required volume of material is less than for emerged breakwaters. A
number of authors prefer submerged breakwaters for coastal protection since, in
addition to defending the coastline from erosion, they (if well designed) do not
disturb the landscape scenery and thus contribute to the preservation of the
environment, which is one of the major design priorities at the moment. This
Keywords
submerged breakwater, wave-induced pressure fields, dynamic
pressure.
Related Book
Other papers in this volume
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