Experimental study on the overall performance of a model OWC system under the free-spinning mode in irregular waves

The evaluation of the overall performance is important to design an oscillating water column (OWC) device. A generic OWC model was tested experimentally in a wave flume, which employed real impulse turbine be connected with air chamber. performances under free-spinning mode irregular scenarios were analyzed. Effects electronic resistance acting as external loads drive train on primary-stage, secondary-stage, and studied. peak efficiencies forced-spinning modes compared. Furthermore, integrated numerical compare regular same incident powers. predictions indicate that obtains at different period values for two scenario types. • model-scaled chamber-turbine system experimentally. waves evaluated. Dynamic interactions between chamber An validated further analysis. Performances power