Dynamic Analysis of an Oscillating Water Column with Artificial Stems


Korkmaz F. C., Gedikli E. D.

Thirty-fourth International Ocean and Polar Engineering Conference, Rodos, Yunanistan, 17 - 20 Haziran 2024, ss.1095-1100

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Rodos
  • Basıldığı Ülke: Yunanistan
  • Sayfa Sayıları: ss.1095-1100
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

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.