Thirty-fourth International Ocean and Polar Engineering Conference, Rodos, Yunanistan, 17 - 20 Haziran 2024, ss.1095-1100
In this work, we present the development of a specialized tank apparatus
for studying the impact of waves on Oscillating Water Columns (OWCs)
and investigate the optimization of wave loads by incorporating flexible
stems. In the experiments, the OWC structure was subjected to wave
frequencies, both with and without the presence of low-mass ratio
flexible cylinders, to simulate the advantageous effects of artificial
vegetation. We used a combination of pressure sensors, strain gauges,
and high-speed cameras to capture the complete dynamics of the system.
As a result, we were able to monitor plate dynamics, observe wave
formations, and quantify pressure variations within the oscillating
chamber using these instruments. Our overarching goal was to reduce
the total load on the breakwater structure while keeping energy levels
high enough to allow for effective energy harvesting. To accomplish this,
we strategically placed a rectangular array of flexible cylinders with low
mass ratios with diameters close to 1 mm immediately preceding the
breakwater plate. The experimental results show that incorporating such
flexible cylinders significantly reduces the overall load on the structure.
The OWC experiences minimal energy drop, ensuring consistent energy
output.. This approach potentially improves the fatigue resistance and
survivability of the breakwater structure and highlights the possibility of
maintaining a good energy performance. These new results are very
promising for developing resilient and efficient coastal structures that
balance load reduction with optimal energy harvesting capabilities.