Spanos, Pol D.Strati, Federica M.Malara, GiovanniArena, Felice2017-03-072017-03-072016Spanos, Pol D., Strati, Federica M., Malara, Giovanni, et al.. "Nonlinear Stochastic Dynamics of an Oscillating Water Column (U-OWC) Harvester: A Frequency Domain Approach." <i>Meccanica dei Materiali e delle Strutture,</i> VI, no. 1 (2016) Universita Degli Studi Di Palermo: 203-210. <a href="https://hdl.handle.net/1911/94016">https://hdl.handle.net/1911/94016</a>.https://hdl.handle.net/1911/94016This paper deals with the problem of examining the nonlinear dynamic of a U-Oscillating Water Column (U-OWC) Wave Energy Converter. The U-OWC dynamic response is governed by a set of non-linear differential equations. In the paper, an approximate linear solution is sought by using the technique of statistical linearization. The linearization scheme is implemented by identifying a surrogate linear system equivalent to the nonlinear one in a mean-square sense. In this context, frequency-domain analyses of the U-OWC response are readily implemented via standard linear input-output relationship. Comparisons between the nonlinear response computed via numerical simulations and by the approximate one assess the reliability of the method. The proposed approach is applied to a small-scale U-OWC model installed in the Natural Engineering Laboratory (NOEL) in Reggio Calabria, Italy.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlewave energy converterU-OWCstatistical linearizationfrequency domain analysis