Showing papers in "Ocean Engineering in 2013"

TL;DR: In this article, the authors used the third-generation wave model WAVEWATCH-III (WW3) to simulate the wave field in the China Sea over the period from 1988 to 2009 using the Cross-Calibrated, Multi-Platform (CCMP) wind field as the driving field.

TL;DR: In this paper, the motions and added resistance of KVLCC2 at Fr=0.142 and 0.25 with free and fixed surge in short and long head waves are predicted using URANS and validated against EFD data for Fr = 0.142.

TL;DR: In this paper, a thorough approach characterizing the spiraling motion of underwater gliders is presented, where equations are derived and then solved by a recursive algorithm with fast convergence, based on a single internal movable and rotatable mass.

TL;DR: The present status of flow hydrodynamics within and around sea-cages is reviewed, providing a framework for understanding the spatial and temporal variability of key environmental parameters within and outside sea-Cages.

TL;DR: Parts of extreme value modelling relevant to characterisation of ocean environments and the design of marine structures are reviewed, summarising basic concepts, modelling with covariates and multivariate modelling (including conditional and spatial extremes), and Bayesian inference for extremes is outlined.

TL;DR: In this paper, a series of high cycle triaxial tests have been carried out on soft marine clays with various stress levels and different confining pressures to investigate the development of strain and pore water pressure.

TL;DR: In this article, a deterministic path planning algorithm that computes a practical and COLREGS compliant navigation path for vessels which are on a collision course is presented. But it does not consider the traffic from a single vessel perspective.

TL;DR: In this article, a modified cognitive reliability and error analysis method (CREAM) is proposed to facilitate human reliability quantification in marine engineering by incorporating fuzzy evidential reasoning and Bayesian inference logic.

TL;DR: In this article, a rigid circular cylinder on two end-springs is placed perpendicular to a uniform steady flow and the cylinder response is measured experimentally for 3×104≤Re≤12×105 and broad ranges of the main PTC parameters.

TL;DR: In this paper, the role of stepped bottom topography in increasing the efficiency of a nearshore oscillating water column (OWC) device was analyzed in the two dimensional Cartesian coordinate system under the linear water wave theory.

TL;DR: In this paper, a simulation of the submarine propeller E1619 using the overset flow solver CFDShip-Iowa V4.5 is presented, and the effect of the turbulence model on the wake is evaluated at J=0.4 comparing results with RANS, DES, DDES and with no turbulence model, showing that RANS overly dissipates the wake and that in the solution with no turbulent model the tip vortices quickly become unphysically unstable.

TL;DR: In this article, an alternative approach for establishing environmental contour lines in the original environmental space is proposed, eliminating the need for any transformations, and the resulting contour line encloses a convex region in the environmental space.

TL;DR: In this article, a combined concept involving a spar-type FWT and an axi-symmetric two-body WEC is considered and denoted as STC, and coupled (wave and wind-induced response mooring) analysis is performed using SIMO/TDHMILL in the time domain to investigate such responses of the STC system under extreme conditions.

TL;DR: In this article, the flow induced motions (FIM) of two rigid circular cylinders, on end linear-springs, in tandem are studied using two-dimensional Unsteady Reynolds-Averaged Navier-Stokes (2-D URANS) simulations verified by experimental data.

TL;DR: In this article, future changes in average upper ocean physics such as sea level rise, sea surface winds and ocean wave heights were analyzed using a climate data set combining IPCC (2007) results and the latest high-resolution atmospheric general circulation model results from the Meteorological Research Institute, Japan.

TL;DR: In this paper, a 3D numerical model is established to simulate the flow field around fishing plane nets in a current, and the governing equations are solved by using the finite volume method.

TL;DR: In this article, the dynamic response of a spar-type hollow cylindrical floating substructure moored by three catenary cables to irregular wave excitation was investigated by using the Pierson-Moskowitz spectrum.

TL;DR: In this article, the multi-fluid SPH formulation is extended to study practical problems where bubbly flows play an important role for production processes of the offshore industry, including the evolution of isolated bubbles, the merging of two bubbles, and the separation process in a bubbly flow.

TL;DR: In this paper, some concerted optimisation efforts at Teekay directed in the areas of technical, commercial and operations have helped increase fleet utilization and profitability while ensuring safety and reliability of service.

TL;DR: An approach of vessel CR assessment based on the Dempster–Shafer (D–S) evidence theory is proposed and successfully assess CR with joint basic probability assignment (JBPA); the simulation results confirm the validity of the proposed approach.

TL;DR: In this paper, the authors consider the development of both shoreline management and the supporting national monitoring program in England to assess whether the SMP process remains useful in these circumstances, given the current concerns about accelerated rates of sea-level rise and climate change.

TL;DR: In this article, a state feedback fault-tolerant adaptive backstepping interval type-2 fuzzy logic controller is introduced, with the option of high-gain observer for output feedback control.

TL;DR: In this article, the applicability of the smoothed-particle-hydrodynamics (SPH) method to complex, full-scale marine-engineering problems is reported, including the installation process of a gravity foundation for wind turbines, jacket launching from a barge and propeller induced scouring of the waterway bottom.

TL;DR: In this article, the authors presented a method to experimentally characterize the significance of hydroelasticity for slamming loaded marine panels, based on a large number of systematical experiments of slamming loaded panels from which semi-empiric expressions for the pressure distributions are derived.

TL;DR: In this paper, the wave energy potential is assessed along the southern coasts of Iran, the Persian Gulf, using SWAN numerical model and ECMWF wind fields over 25 years from 1984 to 2008.

TL;DR: In this article, the authors developed a set of allowances for future rise of relative sea level (i.e., sea level relative to the land) based on the projections of regional sea-level rise, its uncertainty, and the statistics of tides and storm surges (storm tides).

TL;DR: In this article, the authors analytically deduced the power transmission efficiency in air and the power loss of ICPT in seawater and provided guidelines to select the optimum frequency to maximize the efficiency.

TL;DR: In this article, the influence of distant swells generated from Southern Ocean, and their role in modifying local wind-waves at coastal Kalpakkam located at south-east coast of India.

TL;DR: In this paper, the effects of the roll angle on the slamming load were studied through simulations for a bow-flare section with different roll angles, and the simulated vertical slamming force and pressure histories were compared with experiments and other numerical calculations.

TL;DR: In this paper, a matched eigenfunction expansion method is applied to obtain the analytic solution for the interaction of oblique monochromatic incident waves with a submerged horizontal porous plate in the context of two-dimensional linear potential theory.