Journal of Marine Science and Technology

Items from 1 to 20 out of 42 results

article

A coupled FDM–FEM method for free surface flow interaction with thin elastic plate

Kangping Liao, Changhong Hu

Journal of Marine Science and Technology > 2013 > 18 > 1 > 1-11

A partitioned approach by the coupling finite difference method (FDM) and the finite element method (FEM) is developed for simulating the interaction between free surface flow and a thin elastic plate. The FDM, in which the constraint interpolation profile method is applied, is used for solving the flow field in a regular fixed Cartesian grid, and the tangent of the hyperbola for interface capturing...

article

A novel tracking control approach for unmanned underwater vehicles based on bio-inspired neurodynamics

Bing Sun, Daqi Zhu, Feng Ding, Simon X. Yang

Journal of Marine Science and Technology > 2013 > 18 > 1 > 63-74

A novel hybrid control approach is presented for trajectory tracking control of unmanned underwater vehicles in this paper. The kinematic and dynamic controllers are integrated by the proposed control strategy. The paper has two objectives. Firstly, an improved backstep method is proposed to generate the virtual velocity using a bio-inspired neurodynamics model in the kinematic controller. The bio-inspired...

article

A critical look at SOLAS CH II-1 with respect to floodable length of compartments in RoPax ships

Romanas Puisa, Nikolaos Tsakalakis, Dracos Vassalos, Cantekin Tuzcu

Journal of Marine Science and Technology > 2013 > 18 > 1 > 50-62

The paper presents findings of a research project (RP625) funded by the UK Maritime and Coastguard Agency (MCA) with the purpose to provide evidence of equivalence, or lack thereof, between previous and currently in force legislative instruments governing damage stability of RoPax ships, with special focus on inboard spaces with low degree of subdivision, referred as long lower holds (LLH). The outcome...

article

New insight into the wave-induced nonlinear vertical load effects of ultra-large container ships based on experiments

Suji Zhu, Torgeir Moan

Journal of Marine Science and Technology > 2013 > 18 > 1 > 87-114

Accurate estimation of the wave-induced extreme hogging vertical bending moment (VBM) is of vital importance for the design of container ships because container ships are normally under hogging conditions in still water. According to the empirical formulas proposed by the classification society rules, the design hogging VBM can be approximately 20 % smaller than the design sagging VBM for vessels...

article

PIV study of the effect of piston position on the in-cylinder swirling flow during the scavenging process in large two-stroke marine diesel engines

S. Haider, T. Schnipper, A. Obeidat, K. E. Meyer, more

Journal of Marine Science and Technology > 2013 > 18 > 1 > 133-143

A simplified model of a low speed large two-stroke marine diesel engine cylinder is developed. The effect of piston position on the in-cylinder swirling flow during the scavenging process is studied using the stereoscopic particle image velocimetry technique. The measurements are conducted at different cross-sectional planes along the cylinder length and at piston positions covering the air intake...

article

Application of stochastic inverse theory to marine hydrodynamics

S. L. Han, Takeshi Kinoshita

Journal of Marine Science and Technology > 2013 > 18 > 1 > 32-41

The objective of this article is to give an overview about the stochastic inverse method and its application to an ill-posed inverse problem in marine hydrodynamics. In stochastic inversion, it is possible to take into account inherent measurement and system uncertainties in the solution of an inverse problem in a very simple manner. The stochastic inverse method transforms the original inverse problem...

article

Probabilistic modelling of the ultimate strength of ship plates with non-uniform corrosion

A. P. Teixeira, C. Guedes Soares, G. Wang

Journal of Marine Science and Technology > 2013 > 18 > 1 > 115-132

This paper presents the results of a parametric study of probabilistic modelling of the ultimate strength of ship plates with non-uniform corrosion represented by random fields. The load-shortening behaviour of the plates with non-uniform reduction of thickness due to corrosion under longitudinal compression is obtained using a general-purpose nonlinear finite element analysis program. A nonlinear...

article

Black-box modeling of ship manoeuvring motion based on feed-forward neural network with Chebyshev orthogonal basis function

Xin-Guang Zhang, Zao-Jian Zou

Journal of Marine Science and Technology > 2013 > 18 > 1 > 42-49

Based on polynomial interpolation and approximation theory, a novel feed-forward neural network, the feed-forward neural network with Chebyshev orthogonal basis function, is proposed for black-box modeling of ship manoeuvring motion. The neural model adopts a three-layer structure, in which the hidden layer neurons are activated by a group of Chebyshev orthogonal polynomial activation functions and...

article

An analytical investigation of two-dimensional and three-dimensional biplanes operating in the vicinity of a free surface

H. Liang, L. Zhou, Z. Zong, L. Sun

Journal of Marine Science and Technology > 2013 > 18 > 1 > 12-31

In the present article, the classical two- and three-dimensional lifting theories are generalized to the biplane operating in proximity to a free surface. The singularity distribution method is employed to calculate the lifting force for a two-dimensional biplane subjected to wing-in-ground effect in the vicinity of a free surface, and the three-dimensional correction is carried out by the aid of...

article

On the probability of underwater glider loss due to collision with a ship

Lucas Merckelbach

Journal of Marine Science and Technology > 2013 > 18 > 1 > 75-86

The demonstrated utility of underwater gliders as measurement platforms for the open ocean has sparked a growing interest in operating them in shallow coastal areas too. Underwater gliders face additional challenges in this environment, such as strong (tidal) currents and high shipping intensity. This work focuses on the probability of losing a glider through a collision with a ship. A ship density...

article

Model experiment reproducing an incident of fast ferry

Michio Ueno, Hideki Miyazaki, Harukuni Taguchi, Yasushi Kitagawa, more

Journal of Marine Science and Technology > 2013 > 18 > 2 > 192-202

A model scale experiment at a new basin reproduced a phenomenon occurring for a fast ferry; large roll motion and subsequent cargo shift in a quartering sea. Wave generators surrounding the whole periphery of the basin realized a designated directional sea. A carriage system tracked a free-running model ship and a movable weight simulated the cargo shift. Measuring the directional wave field in the...

article

Implementation of a generic concurrent engineering environment framework for boatbuilding

A. J. Sobey, J. I. R. Blake, R. A. Shenoi

Journal of Marine Science and Technology > 2013 > 18 > 2 > 262-274

Boatbuilding is a growth market with global competition and tight profit margins. Concurrent engineering is not presently prevalent within the boatbuilding industry and yet this is a technique that has found much success in other industries. A methodology has, therefore, been developed to aid design in the leisure boatbuilding industry. This environment uses collaborative engineering and automated...

article

Optimization of the horizontal shape of CO₂ injected domain and the depths of release in moving-ship type CO₂ ocean sequestration

Yoshio Masuda, Yasuhiro Yamanaka, Yoshikazu Sasai

Journal of Marine Science and Technology > 2013 > 18 > 2 > 220-228

In moving-ship type CO₂ ocean sequestration, liquid CO₂ is discharged into a domain in a water column. Since the maximum CO₂ concentration that is reached depends on the horizontal shape of the water column and the depths of release, it is very important to optimize these parameters for each injection site in order to minimize the biological impact. We conducted numerical experiments using an offline...

article

Experimental and numerical study of the effects of heave plate on the motion of a new deep draft multi-spar platform

Binbin Li, Zhenhua Huang, Ying Min Low, Jinping Ou

Journal of Marine Science and Technology > 2013 > 18 > 2 > 229-246

The heave motion of a floating structure is critical, as a favorable heave characteristic permits dry tree systems, amongst other benefits. The heave response can be suppressed by installing heave plates. However, the associated hydrodynamic effects, which include viscous damping and added mass, are very complicated. Moreover, there are limited experimental investigations to understand the heave plate...

article

A dissipative free-surface approach for an underwater body in a uniform stream

Zhi-Min Chen

Journal of Marine Science and Technology > 2013 > 18 > 2 > 182-191

A dissipative free-surface approach is applied to the potential flow problem with respect to a hydrofoil in a two-dimensional uniform stream. A dissipative source-based panel method is developed for a NACA foil problem with its trailing edge being a stagnation point, and also for a symmetric Joukowski foil problem with its trailing edge being a non-stagnation point. To facilitate the understanding...

article

Modelling of hydrodynamic circulation in Benoa Bay, Bali

Nining Sari Ningsih, Muchamad Al Azhar

Journal of Marine Science and Technology > 2013 > 18 > 2 > 203-212

A simulation of water level, velocity, salinity, and temperature in the Bay of Benoa has been carried out using a three-dimensional hydrodynamic Estuarine and Coastal Ocean Model incorporating a main characteristic of southward transport of the Indonesian throughflow at the offshore area of the bay. In other respects, two types of boundary conditions have been tested: (1) specifying elevation at all...

article

Relation between the lifting surface theory and the lifting line theory in the design of an optimum screw propeller

Koichi Koyama

Journal of Marine Science and Technology > 2013 > 18 > 2 > 145-165

A theory on an optimum screw propeller is described. The optimum means optimum efficiency of a propeller, that is, maximizing thrust horse power for a given shaft horse power. The theory is based on the propeller lifting surface theory. Circulation density (lift density) of the blade is determined by the lifting surface theory on a specified condition in general. However, it is shown that, in the...

article

Vortex-induced vibration (VIV) dynamics of a tensioned flexible cylinder subjected to uniform cross-flow

Bijan Sanaati, Naomi Kato

Journal of Marine Science and Technology > 2013 > 18 > 2 > 247-261

This paper presents the experimental results of a study on the effects of axial applied tension on the vibration amplitude, the suppression of vibration, hydrodynamic force coefficients and in-line (IL) and cross-flow (CF) frequency responses during vortex-induced vibration of a horizontally mounted flexible cylinder with a low mass ratio (cylinder’s mass/mass of displaced water), low bending-stiffness,...

article

Turn and zigzag maneuvers of a surface combatant using a URANS approach with dynamic overset grids

Pablo M. Carrica, Farzad Ismail, Mark Hyman, Shanti Bhushan, more

Journal of Marine Science and Technology > 2013 > 18 > 2 > 166-181

Unsteady Reynolds averaged Navier–Stokes (URANS) computations of standard maneuvers are performed for a surface combatant at model and full scale. The computations are performed using CFDShip-Iowa v4, a free surface solver designed for 6DOF motions in free and semi-captive problems. Overset grids and a hierarchy of bodies allow the deflection of the rudders while the ship undergoes 6DOF motions. Two...

article

Tributyltin in marine sediments and Philippine green mussels (Perna viridis) in Manila Bay

Ryan U. Olivares, Shigeru Tabeta, Elvira Z. Sombrito

Journal of Marine Science and Technology > 2013 > 18 > 2 > 213-219

Tributyltin (TBT) is a pollutant, mainly introduced to the environment as insecticides, fungicides, bactericides, wood preservatives and marine antifouling agent. Concentrations of TBT and its degradation products were isolated from the bivalve Perna viridis and marine sediments collected from selected coastal areas along Manila Bay. In all samples, the extremely toxic TBT compound was detected, calculated...

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18
Year:
2013

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Keywords

FLEXIBLE CYLINDER (2)
MODEL TEST (2)
OPTIMIZATION (2)
ULTIMATE STRENGTH (2)
PAGRUS MAJOR (1)
PERNA VIRIDIS (1)
3D BIN-PACKING (1)
6DOF (1)
A THREE-DIMENSIONAL HYDRODYNAMIC MODEL (1)
ACOUSTIC ANALOGY (1)
ADDED RESISTANCE (1)
AIR EMISSIONS (1)
AIS (1)
AMPLITUDE OF PRESSURE FLUCTUATION (1)
AMUNDSEN SEA (1)
APPROXIMATION (1)
AR MODEL (1)
ARAON (1)
ARREST DESIGN OF BRITTLE CRACK (1)
BANK EFFECTS (1)
BENOA BAY (1)
BIO-INSPIRED NEURODYNAMICS MODEL (1)
BIOLOGICAL IMPACTS (1)
BIPLANE (1)
BLACK-BOX MODELING (1)
BURG METHOD (1)
CARBON DIOXIDE CAPTURE AND STORAGE (CCS) (1)
CARGO SHIFT (1)
CAUSE INVESTIGATION (1)
CAVITY VOLUME (1)
CFD (1)
CHEBYSHEV ORTHOGONAL BASIS FUNCTION (1)
CIP METHOD (1)
CO2 OCEAN SEQUESTRATION (1)
COLLISION (1)
CONCURRENT DESIGN (1)
CORRELATION COEFFICIENT (1)
COUPLED FDM–FEM (1)
DAMAGE SURVIVABILITY (1)
DECISION MAKING (1)
DESIGN AUTOMATION (1)
DESIGN FOR PRODUCTION (1)
DIRECTIONAL WAVE (1)
DUCTED PROPELLER (1)
DYNAMIC OVERSET GRIDS (1)
ECOM (1)
EFFECT OF PROPELLER LOAD ON WAKE COEFFICIENT (1)
EFFECTIVE INFLOW VELOCITY IN WAVES (1)
EULER–BERNOULLI BEAM EQUATION (1)
EXPERIMENT (1)
EXPERIMENTAL REPRODUCTION (1)
EXTREMELY THICK STEEL PLATE (1)
FABRICATION EFFECT (1)
FATIGUE CRACK GROWTH (1)
FEED-FORWARD NEURAL NETWORK (1)
FINITE ELEMENT METHOD (1)
FINITE ELEMENT METHOD (FEM) (1)
FLOW IN GAP (1)
FLUID-STRUCTURE INTERACTION (1)
FLUID–STRUCTURE INTERACTION (1)
FREE RUNNING MODEL (1)
FREE RUNNING MODEL TEST IN WAVES (1)
FREE STREAMLINE THEORY (1)
FREE SURFACE FLOW (1)
FREE SURFACE GREEN’S FUNCTION (1)
FREE-SURFACE GREEN FUNCTION (1)
FULL-SCALE ICE TRIAL (1)
GERMAN BIGHT (1)
GLIDERS (1)
GROWTH MODEL (1)
HEAD WAVES (1)
HEADING CONTROL (1)
HEAVE (1)
HEAVE PLATE (1)
HOGGING (1)
HYDROACOUSTICS (1)
HYDRODYNAMIC FORCE (1)
HYDRODYNAMIC FORCES AND MOMENTS (1)
HYDRODYNAMIC INLINE FORCE (1)
HYDRODYNAMIC LOADS (1)
HYDROFOIL ENERGY DISSIPATION (1)
ICE RESISTANCE (1)
ICE-BREAKING VESSEL (1)
ILL-POSED PROBLEM (1)
INFLOW VELOCITY ON CAVITY SURFACE (1)
INJECTION SITE (1)
INTEGRAL TRANSFORM (1)
INVERSE PROBLEM (1)
KALMAN FILTER (1)
KVLCC2 (1)
LARGE CONTAINER SHIP (1)
LEVEL ICE (1)
LIFTING LINE THEORY (1)
LOGISTIC REGRESSION (1)
LONG FLEXIBLE CYLINDERS (1)
MANOEUVRING (1)
MARINE ACCIDENT (1)
MARINE HYDRODYNAMICS (1)
MARINE POLLUTION (1)
MARITIME POLLUTION (1)
more

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Journal of Marine Science and Technology

A coupled FDM–FEM method for free surface flow interaction with thin elastic plate

A novel tracking control approach for unmanned underwater vehicles based on bio-inspired neurodynamics

A critical look at SOLAS CH II-1 with respect to floodable length of compartments in RoPax ships

New insight into the wave-induced nonlinear vertical load effects of ultra-large container ships based on experiments

PIV study of the effect of piston position on the in-cylinder swirling flow during the scavenging process in large two-stroke marine diesel engines

Application of stochastic inverse theory to marine hydrodynamics

Probabilistic modelling of the ultimate strength of ship plates with non-uniform corrosion

Black-box modeling of ship manoeuvring motion based on feed-forward neural network with Chebyshev orthogonal basis function

An analytical investigation of two-dimensional and three-dimensional biplanes operating in the vicinity of a free surface

On the probability of underwater glider loss due to collision with a ship

Model experiment reproducing an incident of fast ferry

Implementation of a generic concurrent engineering environment framework for boatbuilding

Optimization of the horizontal shape of CO₂ injected domain and the depths of release in moving-ship type CO₂ ocean sequestration

Experimental and numerical study of the effects of heave plate on the motion of a new deep draft multi-spar platform

A dissipative free-surface approach for an underwater body in a uniform stream

Modelling of hydrodynamic circulation in Benoa Bay, Bali

Relation between the lifting surface theory and the lifting line theory in the design of an optimum screw propeller

Vortex-induced vibration (VIV) dynamics of a tensioned flexible cylinder subjected to uniform cross-flow

Turn and zigzag maneuvers of a surface combatant using a URANS approach with dynamic overset grids

Tributyltin in marine sediments and Philippine green mussels (Perna viridis) in Manila Bay

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