This work deals with the transient hydroelastic analysis of a sandwich beam which represents a boat hull. The beam is subjected to slamming pressure while it enters into water with constant vertically downward velocity. A coupled hydroelastic finite element model is developed using higher order shear and normal deformation theories for the faces and the core of the beam and the velocity potenti...

In this research, numerical simulation of a symmetric impact of a 2-D wedge, considering dynamic equations in two-phase flow is taken into account. The two-phase flow around the wedge is solved based on finite volume method and volume of fluid (VOF) scheme. The dynamic mesh model is used to simulate dynamic motion of the wedge, thereby the effects of different dynamic meshes in both structured ...

Results of analytical modeling and computer simulation of wave-induced structural loadings on ships i!lwaves is presented! with consideration ~f bow flare slamming, bottom impact slamming, and springing. Consideration is given only to the case of head seas, and the outputs are obtained in the form of time histories due to the nature of the nonllnearities and the nonstationary propert~es associa...

Energy extraction from ocean waves and conversion to electrical energy is a promising form of renewable energy, yet achieving economic viability of wave energy converters (WECs) has proven challenging. In this article, the design of a heaving cylinder WEC will be explored. The optimal plant (i.e. draft and radius) design space with respect to the design’s optimal control (i.e. power take-off tr...

This study describes an application of a Daubechies wavelet function to analyze measured ship model data. The records of a self-propelled, flexible model of the S175 container ship moving in waves are analyzed by FFT and wavelet methods. It is shown that the high frequency component of the recorded rigid body motions can be omitted without substantially affecting the main features of the data s...

This paper aims to evaluate the dynamic response and failure mechanism of corrugated core composite metal sandwich structures under complicated fluid-structure interaction. Firstly, a reliable numerical model is established in ABAQUS/Explicit using Coupled Eulerian-Lagrangian (CEL) method. Subsequently, influence slamming velocity aluminum direction on studied virtue hydrodynamic force, deflect...

Breaking wave impacts on a monopile at 20 m depth are computed with a VOF (Volume Of Fluid) method. The impacting waves are generated by the second-order focused wave group technique, to obtain waves that break at the position of the monopile. The subsequent impact from the vertical run-up flow on a horizontal inspection platform is computed for five different platform levels. The computational...

Computational Fluid Dynamics (CFD) investigations into water entry problems of a rigid flat plate with air pockets were systematically conducted. The Volume (VOF) model was utilised to capture localised slamming phenomena that occur during, and post-impact events. model's geometry modified include pocket on the impact surface investigate effect entrapment magnitude distribution forces pressures...

This paper describes how tangential impact velocities can be incorporated into wellknown impact theories in deep and shallow water. Taking the deep and shallow flows in turn, it is shown how to link the normal impact Wagner and Korobkin theories to the tangential impact theories of planing and skimming respectively. An instability is revealed that limits the configurations that can be analysed ...