The authors are developing a flat plate type wave absorbing structure that can absorb the energy of incident waves. The structure consists of horizontal flat plates arranged vertically at certain intervals. Several wave tank tests are conducted to examine the wave absorbing performance of the structure. By measuring water level data at four points, two in front of the structure and two behind it, wave transmission, reflection, and loss coefficients were evaluated for three parameters: wave steepness, the ratio of the water depth above the top plate to the wave height, and the ratio of longitudinal length of the plate to the wave length. It is found that the water depth above the top plate below the surface of water has the most significant effect on the overall wave absorption capability of the structure.
One of the major adversities of global warming is the rise of the sea level and flood tides. Several researchers have developed various types of wave breakers that are effective and economical too. The authors are developing the flat plate wave-absorbing structure and have made preliminary wave tank tests to study its effectiveness. Fig. 1 (referto the full paper) shows the sketch of the wave-absorber which consists of horizontal plates arranged vertically at certain intervals. The vertical distance between the plates can be varied as per the wave conditions and the water depth. The working principle of the structure is that when the wave comes in contact with the structure, the orbital motion of its water particles gets suppressed by the top and the intermediate plates causing a reduction of the height of the wave in the wake of the wave-absorber. As a result, some portion of the total energy carried by the incident wave is absorbed by the wave-absorber. The proposed system has three major advantages.
