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Publications
Gadelho, J.F.M., Rezanejad, K., Guedes Soares, C., Santos, J.A., Anastas, G. and Fortes, C.J.E.M. (2024), Experimental study of an onshore dual chamber oscillating water column device, Ocean Engineering, Vol. 300, 117240
A wave flume is used to study a scaled model of a dual-chamber Oscillating Water Column (OWC) device installed onshore that share wave energy generation and coastal protective functions. The use of dual-chambers is expected to widen the range of sea states in which the OWC is more efficient. The Power Take-Off system is modelled as an air opening in the pneumatic chambers. Several experiments combining regular incident waves and Power Take-Off damping conditions are performed. This work aims to improve the primary efficiency of onshore OWCs for wider sea states and present experimental results that can help with the design and numerical modelling of these types of devices. The amplitudes of free surface elevation and air pressures inside the chambers are presented, as well as the primary efficiency of the studied dual chamber OWC device. Results show that the primary efficiency of the device is highly dependent on the Power Take-Off damping characteristics. For the studied cases with higher damping configurations, the primary efficiency of the device can reach around 40%.
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