Method for damping ocean waves in a coastal area
First Claim
1. A method for damping ocean waves in a coastal area, comprising the steps of:
- providing a horizontal support surface on the seabed in the coastal area;
determining a desired transmission coefficient equal to a ratio between wave height of the ocean waves transmitted between a slotted vertical barrier and the coast to be protected and wave height of the ocean waves incident on the slotted vertical barrier;
collecting experimental data correlating transmission coefficients with a number of parallel vertical walls in the slotted vertical barrier and a porosity of the parallel vertical walls in the slotted vertical barrier for a plurality of ratios of significant wave height to depth of still water in the coastal area and for a plurality of ratios of the depth of still water in the coastal area to wavelength of the ocean waves at peak period;
selecting from the collected experimental data a combination of the number of parallel vertical walls and porosity of the parallel vertical walls to produce the desired transmission coefficient given the ratio of significant wave height to depth of still water in the coastal area and the ratio of the depth of still water in the coastal area to the wavelength of the ocean waves at peak period; and
constructing a wave barrier for damping ocean waves, the wave barrier including erecting a slotted vertical barrier extending upwardly from the horizontal support surface on the seabed, the vertical barrier having the selected number of parallel vertical walls and the selected porosity of the vertical walls between the ocean waves and the coast to be protected in order to dampen the ocean waves in the coastal area, wherein the parallel vertical walls each have a plurality of alternating slats and slots extending horizontally across the vertical wall.
1 Assignment
0 Petitions
Accused Products
Abstract
The method for damping ocean waves in a coastal area uses a barrier having a plurality of vertical walls positioned parallel to one another, each wall defining a plurality of horizontally extending slots. The dimensions of the slots, or overall porosity of the wall, and the number of walls positioned in parallel may be varied to provide different levels of damping. Accordingly, a desired amount of damping may be provided through varying the porosity of the walls and the number of walls. The method defines a transmission coefficient equal to the wave height of waves transmitted from the barrier divided by the wave height of waves incident on the barrier, and collects experimental data normalized with the significant wave height and the wavelength at the peak period for the depth of water to select the combination of wall number and porosity to produce the desired damping.
31 Citations
9 Claims
-
1. A method for damping ocean waves in a coastal area, comprising the steps of:
-
providing a horizontal support surface on the seabed in the coastal area; determining a desired transmission coefficient equal to a ratio between wave height of the ocean waves transmitted between a slotted vertical barrier and the coast to be protected and wave height of the ocean waves incident on the slotted vertical barrier; collecting experimental data correlating transmission coefficients with a number of parallel vertical walls in the slotted vertical barrier and a porosity of the parallel vertical walls in the slotted vertical barrier for a plurality of ratios of significant wave height to depth of still water in the coastal area and for a plurality of ratios of the depth of still water in the coastal area to wavelength of the ocean waves at peak period; selecting from the collected experimental data a combination of the number of parallel vertical walls and porosity of the parallel vertical walls to produce the desired transmission coefficient given the ratio of significant wave height to depth of still water in the coastal area and the ratio of the depth of still water in the coastal area to the wavelength of the ocean waves at peak period; and constructing a wave barrier for damping ocean waves, the wave barrier including erecting a slotted vertical barrier extending upwardly from the horizontal support surface on the seabed, the vertical barrier having the selected number of parallel vertical walls and the selected porosity of the vertical walls between the ocean waves and the coast to be protected in order to dampen the ocean waves in the coastal area, wherein the parallel vertical walls each have a plurality of alternating slats and slots extending horizontally across the vertical wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification