KARA, Fuat (2019). Time domain prediction of first- and second-order wave forces on rigid and elastic floating bodies. In: International Conference on Offshore Renewable Energy, Glasgow, UK, 29-30 August 2019. (Unpublished) [Conference or Workshop Item]
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Time domain prediction of first- and second-order wave forces on rigid and elastic floating bodies.pdf - Accepted Version
Available under License All rights reserved.
Time domain prediction of first- and second-order wave forces on rigid and elastic floating bodies.pdf - Accepted Version
Available under License All rights reserved.
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Abstract
The application and development of a transient three-dimensional numerical code ITU-WAVE which is
based on panel method, potential theory and Neumann-Kelvin linearization is presented for the prediction
of hydrodynamics characteristics of mono-hull and multi-hull floating bodies. The time histories of unsteady
motions in ambient incident waves are directly presented with regards to impulse response functions (IRFs)
in time. The first order steady forces of wave-resistance, sinkage force and trim moment are solved as the
steady state limit of surge radiation IRFs. The numerical prediction of the second order mean force which
can be computed from quadratic product of first-order quantities is presented using near-field method
based on the direct pressure integration over floating body in time domain. The hydrodynamic and
structural parts are fully coupled through modal analysis for the solution of hydroelastic problem in which
Euler-Bernoulli beam is used for the structural analysis. A stiff structure is then studied assuming that
contributions of rigid body modes are much bigger than elastic modes. A discrete control of latching is used
to increase the bandwidth of the efficiency of Wave Energy Converters (WEC). ITU-WAVE numerical results
for different floating b
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