The study of gravity driven water waves interacting with fixed or freely floating objects is an active and important field of research in ocean engineering. The accurate prediction of large amplitude ship motions or of marine structures in severe seas is still a delicate problem in the field of fluid-structure interaction. While three-dimensional panel methods have reached the state of maturity in linear sea-keeping analysis, the original problem, governed by strongly nonlinear boundary conditions, is far from being solved efficiently. The principal nonlinearities are associated with the variable wetted surface of the ship hull or the floating body and with the nonlinear hydrodynamic conditions on the free surface. Moreover, marine structures often must be modelled as multibody systems rather than a single body. This causes additional problems due to wave slamming on floating and fixed structures. Furthermore, problems such as coupled structural behavior of submerged or floating systems as well as various wind effects have to be considered for the proper design of offshore systems.

This book collects contributions from leading scientists working on the following topics: Ocean waves, probabilistic models of sea waves, fluid-loading on structures including pipes, cables, drill-strings etc., behavior of floating systems, stability and capsizing of ships, coupled structural behavior, sloshing in tanks, CFD validation and verification.

Contenu

Non-linearities and Coupling Effects on Floating Breakwaters Eigenvalues.- Hydrodynamic Loads during Water Entry of a Flat Plate.- Large amplitude rolling and strongly nonlinear behaviour of multihull ships in moderate beam waves.- A New Solution Method for Unsteady Flows Around Oscillating Bluff Bodies.- Nonlinear Dynamics of Offshore Systems in Random Seas.- Experimental and numerical results on VIV and WIO.- Viscous Damping of Large Floating Structures.- Nonlinear Surface Waves interacting with a Vertical Cylinder. The first few Steps of a General Method.- Hydrodynamics of Damping Plates at Small KC Numbers.- Modelling and Adaptive Control of an Underwater Vehicle System: A Multibody System Approach.- Effects of Heave Excitation on Rotations of a Pendulum for Wave Energy Extraction.- A CFD Approach for Extremely Nonlinear Wave-Body Interactions: Development and Validation.- Estimation of Parametric Roll in a Stochastic Seaway.- A Reduced Order Model for Vortex-Induced Vibration of a Vertical Offshore Riser in Lock-in.- Non-Classical Boundary Conditions in Water-Impact Problems.- A Method for the Model Reduction of a Wave-excited Floating Body.- Fluid-Structure Interaction of Propellers.- On the lift forces acting on an accelerated/decelerated cylinder beneath a free surface.- Asymptotic analysis of linear/nonlinear vibrations of suspended cables under heavy fluid loading.- Thickness and cavitation effects Cavitation effects on vibrations of hydrofoils Hydrofoils at large angle of attack.- Nonlinear Interaction of Shallow Water Waves in Polar Coordinates.- Seakeeping Performance Analysis by Nonlinear 2D+t Slender-Ship Theory.- Nonlinear Dynamics of Ship Steering Behaviour Under Environmental Excitations.- Dimension Reduction of Fluid Conveying Tubes: A NontrivialProblem.- Asymmetric Water Entry of a Bow-Flare Ship Section with Roll Angle.- Melnikov's Method for Ship Motions without the Constraint of Small Linear Damping.- A Non-linear Hydroelasticity Theory of Ships and its Application.