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Response of Floating Structures in a Directional Sea

by Senaka Ratnayake, Univ of Washington, Seattle, WA, USA,



Document Type: Proceeding Paper

Part of: Hydraulics and Hydrology in the Small Computer Age

Abstract:

A finite element numerical model is presented to predict the behavior of long floating structures in a multi-directional sea. A follow up numerical model analyzes an important but mostly ignored phenomenon experienced by relatively short structures, the rigid body mean displacement and large amplitude low frequency oscillations caused by second order hydrodynamic drift forces. Both models are stochastic in nature; all results are presented in terms of spectra of the quantities of interset. Field data from a well instrumented prototype floating breakwater were used to validate the models.

Subject Headings: Numerical models | Structural models | Finite element method | Mathematical models | Hydrologic models | Hydraulic models | Water waves

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