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Wave-Current Interaction with a Large Structure
The effects of a current on the diffraction of regular waves around a three-dimensional body are examined by a time-domain method. The Froude number is assumed to be small so that the...

A Numerical Study of Kinematics of Nonlinear Water Waves in Three Dimensions
We present a new method for analyzing the kinematics of nonlinear water waves in a three-dimensional domain. This method is based on our extension and generalization of the mixed-Eulerian-Lagrangian...

Measured and Simulated Response of a Small Semisubmersible Moored in Deep Water
Small semisubmersible platform concepts are proposed for electronic tracking ranges, single-well petroleum production, and oceanographic data collection. This paper summarizes a major...

Flexible Membrane Wave Barrier
A linear analytical model is developed for the dynamic response of a flexible membrane wave barrier. The wave barrier consists of a thin flexible membrane suspended in the water column...

Experimental Studies for the Port of Bilbao Extension
The Port of Bilbao is the leading port in Spain concerning total traffic volume. It also holds a relevant position in the international context. The Managing Board recently approved an...

A Simple Method to Compute Wave Loads on a TLP
In this paper, analytic diffraction (Linton and Evans, 1990) and radiation (Kim, 1992) solutions for arrays of bottom-mounted vertical circular cylinders are used to compute hydrodynamic...

Nonlinear Wave Runup on Large Circular Cylinders
Various design methods for computing nonlinear wave runup on a large-diameter circular cylinder are presented. First, empirical correlations are developed between the observed maximum...

Second-Order Hydrodynamic Interactions Between a Pair of Vertical Cylinders in Irregular Waves
A complete second-order solution is given for the hydrodynamic forces on a pair of bottom-mounted, surface-piercing, vertical circular cylinders in bichromatic seas. The constant structural...

Simulation of Nonlinear Wave Runup on Steep Impermeable Slopes
A numerical scheme is developed to simulate the propagation of second-order Stokes waves in a two-dimensional channel and the runup of these waves on an impermeable slope. The waves are...

Offshore Structures?Past, Present, and Future
A review of the evolution of offshore platforms concludes that the process is ongoing. New configurations continue to emerge and the range of applicability continues to expand. Today's...

The Mother of All Resilient Structures: Fixed-Base Tower in 3000-Foot Water and Some Outstanding Issues
This paper describes design and development work for 40- to 80-well fixed- base - yet compliant - towers for 2000- to 3000-foot water depths. Technical issues which are covered include:...

Current Blockage Effects on Model-Scale Offshore Platform
This paper presents analysis results of model tests on a 1:47 scale model of an offshore jacket structure under wave-plus-tow (representing wave-plus-current) conditions. The analysis...

Wave Exciting Forces on a Platform Fixed in Nonlinear Shallow Water Waves
This paper presents the result of an experimental observation of cnoidal waves and the nonlinear wave loads on a fixed barge in a 2-dimensional wave tank. The Ursell numbers of the waves...

Predicting Fate and Effects of Hydrocarbons in the Oceans
Three major sources of hydrocarbons exist in the oceans. One is from oil spills related to the production and transportation of hydrocarbons. The second, while generally not spectacular,...

Wave Effects on Offshore Structures?Some Recent Research
The present paper summarizes methods of estimating wave effects on offshore structures, and highlights a selection of recent related research. Initially, certain aspects relating to the...

Sea Floor Wave-Induced Water Kinematics for Design of Pipeline
A statistical model is presented for horizontal velocity and acceleration of water particles beneath storm seas near the sea floor. An expansion of the kinematics with basis functions...

Probability of Wave Force on Horizontal Members
This study is motivated by the works of Isaacson and Subbiah (1990) to evaluate the vertical wave force on a rigid horizontal member located in the vicinity of still water level with its...

Reliable Design-Wave Force Predictions for Seabed Pipelines
The results of three separate field research projects have been pulled together to provide a design formula for maximum wave-induced horizontal force on a submarine pipe. This broadly-applicable...

Static Wave Force Procedure for Platform Design
Since results from the Ocean Test Structure were presented at Civil Engineering in the Oceans IV in 1979, there have been numerous laboratory experiments and a few full-scale measurements...

Pipeline Storm Behavior on Clay Soils
A series of transverse wave loading tests was conducted on a specially mounted section of pipe in a sediment-filled tank, to investigate the stability of unburied submarine pipelines under...

 

 

 

 

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