An experimental and analytical investigation on the hydrodynamic efficiency of a cylindrical oscillating water column wave energy device

Dai, Saishuai and Day, Sandy and Xiao, Qing (2014) An experimental and analytical investigation on the hydrodynamic efficiency of a cylindrical oscillating water column wave energy device. In: International Conference on Marine Technology ICMT 2014, 2014-07-07 - 2015-01-09, University of Strathclyde.

[img] PDF (Dai-etal-ICMT2014-cylindrical-oscillating-water-column-wave-energy-device)
Dai_etal_ICMT2014_cylindrical_oscillating_water_column_wave_energy_device.pdf
Preprint

Download (868kB)

    Abstract

    Three-dimensional cylindrical Oscillating Water Column (OWC) wave energy device is investigated in this work using both experimental and analytical methods. Non-linear Power take off system is simulated by an orifices-plate. Three different damping levels’ effects are studied. Results show that analytical method combining damping effect, taken from experiment, can provide a better prediction for the experiment. However, analytical method fails to include viscous effect. In addition, present results also suggests that in low wave frequency region, high damping leads to a better performance in capture factor as compared to a low damping case.