Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Models --- Fluid filters --- Aerosols --- Measuring instruments --- Computerized simulation --- Computer programs --- Potential flow --- Models --- Fluid filters --- Aerosols --- Measuring instruments --- Computerized simulation --- Computer programs --- Potential flow

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

While at the initial design stage one has to rely on systematic experience, empirical 
methods and experimental model tests to predict ship hydrodynamics performance, it is now 
becoming more and more common to involve CFD methods in order to optimise the body 
lines plan. 
The KCS container ship was designed at the KRISO (Korea Research Institute for Ships 
and Ocean Engineering), now MOERI (Maritime and Ocean Engineering Research Institute), 
that can be used as a benchmark model for CFD predictions. 
The aim of this thesis is to compute with preliminary design tools and CFD instruments 
the hydrodynamic performances (resistance, powering and manoeuvrability) of the KCS 
container ship and to validate some numerical results on the basis of the model resistance tests 
performed both at the small Towing Tank from Dunarea de Jos University of Galati (45 m in 
length) and at the large Towing Tank from MOERI. The goal of the comparison is to evaluate 
the chances that a small basin like the one in Galati has to accurately predict the 
hydrodynamic resistance for this type of ship. 
The preliminary hydrodynamic performances are computed using the hydrodynamic 
modules of AVEVA Initial Design system, on the basis of the main dimensions, hydrostatics 
characteristics and the body lines plan of the KCS container ship. 
Also, the CFD instruments may be used as a predictive tool and the naval architects must 
have confidence that the simulation results are an accurate representation of reality. 
SHIPFLOW code has been applied directly to full scale, in order to study the free surface 
potential flow and viscous flow around the KCS hull, delivering the ship resistance. The 
numerical results have been validated using experimental data bases, including experimental 
tests results obtained at the Towing Tank from Galati University, with a model having 3.502 
m length and at the MOERI Towing Tank, for a KCS model with 7.279 m length. 
The comparison between numerical and experimental results suggests the necessity to 
improve the preliminary design tools and the CFD methods in order to obtain realistic 
prediction of the hydrodynamics performances of the large ships. Also, the small towing tank 
from Galati University can be used in order to predict with satisfactory accuracy the 
resistance for this type of ships'.

KCS, Resistance, Powering, Manoeuvring, Potential flow, Viscous flow --- Ingénierie, informatique & technologie > Ingénierie civile

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Supersonic flow with shock waves --- Airfoils in supersonic flow --- Transonic flow --- Hypersonic flow --- Potential flow(Subsonic-) --- Characteristic method in gas dynamics --- Potential flow(Transonic-) --- Aerodynamics(High speed-) --- Supersonic flow --- Perturbation theory of aerodynamics(Small-)

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

In the framework of the completion of EMShip (Erasmus Mundus Double Master in Ship Design and Offshore Structures) Program, this master thesis was undertaken at LHEEA (Laboratory in Hydrodynamics, Energetics and Atmospheric Environment), a CNRS/Ecole Centrale Nantes research laboratory.

The purpose of this thesis is the estimation of the non-linearities associated with sea-keeping computation encountered in highly cambered waves. Linear methods like NEMOH developed for small displacements computations do not give good result. To estimate nonlinearity the weakly-nonlinear seakeeping code known as CN-WSC (Weak-Scatterer) was developed. 

To quantify the non-linearities associated with highly cambered waves, a vertical cylinder was taken and it's motion response are calculated with CN-WSC (Weak-Scatterer) and similar calculations are done with linear code NEMOH. The motions calculated with both methods are compared and differences in the motion for highly cambered waves are illustrated as non-linearities were studied.

Nonlinear potential flow solver --- Weakly Scatterer --- Seakeeping of Ships and Offshore structures --- benchmarking --- CN_WSC --- fluid mechanics --- Ingénierie, informatique & technologie > Ingénierie mécanique

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

This book presents the papers accepted into the Special Issue “Stability and Seakeeping of Marine Vessels” and includes nine contributions to this Special Issue published in 2020. The overall aim of the collection is to improve knowledge about the most relevant and recent topics in ship stability and seakeeping. Specifically, the articles cover a wide range of topics and reflect the recent scientific efforts in the 2nd generation intact stability criteria evaluation and modelling of the ship dynamics assessment in intact or damaged conditions. These topics were investigated mainly through direct assessments performed both via numerical methods and tools, and experimental approaches. The book is addressed to individuals from universities, research organizations, industry, government agencies and certifying authorities, as well as designers, operators and owners who contribute to improved knowledge about “stability and seakeeping”.

Technology: general issues --- URANS --- VOF --- overset mesh --- side damage --- bottom damage --- flooding process --- motion response --- nonlinear steady flow --- desingularized Rankine panel method --- forward speed --- radiation and diffraction --- adaptive weather routing --- Seakeeping Performance Index --- route optimization --- Dijkstra algorithm --- Cummins equations --- vertical motions assessment --- time domain simulations --- experimental seakeeping --- hard chine displacement hull form --- second generation intact stability criteria --- operational guidance --- operational limitations --- vulnerability levels --- direct stability assessment --- Ro-Ro ferry --- coastal patrol ship (CPS) --- full-scale seakeeping trials --- ship design --- barge platform --- zero-pressurized air cushion --- hydrodynamic performance --- boundary element method --- container ship --- added resistance in waves --- sea states --- potential flow theory --- variation of ship characteristics --- strip theory --- BEM --- RANS --- regular wave --- seakeeping --- URANS --- VOF --- overset mesh --- side damage --- bottom damage --- flooding process --- motion response --- nonlinear steady flow --- desingularized Rankine panel method --- forward speed --- radiation and diffraction --- adaptive weather routing --- Seakeeping Performance Index --- route optimization --- Dijkstra algorithm --- Cummins equations --- vertical motions assessment --- time domain simulations --- experimental seakeeping --- hard chine displacement hull form --- second generation intact stability criteria --- operational guidance --- operational limitations --- vulnerability levels --- direct stability assessment --- Ro-Ro ferry --- coastal patrol ship (CPS) --- full-scale seakeeping trials --- ship design --- barge platform --- zero-pressurized air cushion --- hydrodynamic performance --- boundary element method --- container ship --- added resistance in waves --- sea states --- potential flow theory --- variation of ship characteristics --- strip theory --- BEM --- RANS --- regular wave --- seakeeping