Christou, A; Stoesser, T; Xie, Z; (2020) A Solitary Wave Interaction with a Submerged Thin Plate in Various Angles of Attack. In: Proceedings of the 30th International Ocean and Polar Engineering Conference. (pp. pp. 1896-1903). International Society of Offshore and Polar Engineers (ISOPE): Shanghai, China.

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Abstract

A 3D Numerical Wave Tank (NWT) has been implemented in the inhouse Large Eddy Simulation (LES) code to study wave-structure interaction problems in deep, intermediate and shallow water-depths. For the purpose of this study, a three dimensional solitary wave interacting with a submerged finite plate is considered. The direction of the wave relative to the plate orientation is examined by considering a rotating plate of several angles of attack (θ). The NWT is capable of generating solitary, linear and non-linear periodic waves using Dirichlet boundary conditions based on relevant wave theories. Experimental data obtained from a previous study of a solitary wave-fixed plate interaction are used to evaluate the accuracy of the refined code, by comparing wave elevations, forces and moments. Then, a finite plate of various angles of attack is considered and plots of the free-surface evolution and contours of the flow vorticity reveal the variations and similarities between different cases and confirm that complex local flow hydrodynamics exist in such more realistic problems.

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