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Publications
Gadelho, J.F.M., Guedes Soares, C., Hashemzadeh M., Anastas, G., Rezanejad K., Lopez, I. and Carballo, R. (2025), Experimental motion measurements of a floating dual-chamber OWC using the smartphone sensors as a low budget solution, Innovations in Renewable Energies Offshore, Guedes Soares, C. & Wang S. (Ed.), Taylor and Francis Group, London, UK, 165-172.
In this work a wave flume is used to study a scaled model of a dual-chamber Floating OWC device: it combines a classic OWC chamber in the front side, facing the incoming waves, with a Backward Bent Duct Buoy chamber in the downstream side. The PTO system is modelled as an air opening in the pneumatic chambers. Several experiments combining regular and irregular incident waves and PTO damping conditions were performed. The aim of this work is to present the first steps of a new methodology to track the floating device motions subjected to regular waves, using a low budget solution based on the readings of smartphone sensors. The smartphone is physically fixed inside the model. These results are important to predict the RAOs of the device and can be used to calibrate and validate numerical models of such floating WEC devices. The 3 DoF results show that the present solution can be a budget alternative to capture the device motions, in regular waves, compared to a more expensive motion capture system, for example Qualisys.
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