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Dissertation
Initial Design of a Ship shaped Self-Propelled Drillship
Authors: --- ---
Year: 2017 Publisher: Liège Université de Liège (ULiège)

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Abstract

Drillships are special purpose vessels, which are equipped with goal-oriented state of the art technology products. The main objective of this drillship design is to focus on functionality while maintaining flexibility in operations. The initial/concept design will be concentrated on two major aspects: general design and hydrodynamic performance investigation. The general design will include ship forms, preliminary freeboard calculation, preliminary general arrangement, tanks and compartmentation, lightship weight (distribution) initial estimation, intact stability calculations, still water shear force and bending moment evaluation. The general design shall not include damage stability calculations, scantling evaluation, and midship section design. The hydrodynamic performance study will include ship speed/power prediction, the study of moonpool effect on resistance and dynamic positioning initial prediction. Hydrodynamic studies shall not include seakeeping calculations. 

In addition, the behavior of the flow in open moonpool has been observed by Computational Fluid Dynamic (CFD) software NUMECA/Fine Marine V5.1. Confirmation of the CFD studies was carried out on similar moonpool dimensions as used in a model test constructed by Delft University of Technology, Ship Hydrodynamics Laboratory. The approaches available in this study can be used in the preliminary design phase of a drillship


Book
Stability and Seakeeping of Marine Vessels
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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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”.


Book
CFD Modelling and Simulation of Water Turbines
Authors: ---
ISBN: 3036560165 3036560157 Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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The design and development of water turbines requires accurate methods for performance prediction. Numerical methods and modelling are becoming increasingly important tools to achieve better designs and more efficient turbines, reducing the time required in physical model testing. This book is focused on applying numerical simulations and models for water turbines to predict tool their performance. In this Special Issue, the different contributions of this book are classified into three state-of-the-art Topics: discussing the modelling of pump-turbines, the simulation of horizontal and vertical axis turbines for hydrokinetic applications and the modelling of hydropower plants. All the contributions to this book demonstrate the importance of the modelling and simulation of water turbines for hydropower energy. This new generation of models and simulations will play a major role in the global energy transition and energy crisis, and, of course, in the mitigation of climate change.


Book
Stability and Seakeeping of Marine Vessels
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

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”.


Book
Stability and Seakeeping of Marine Vessels
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

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”.


Book
Advances in Hydraulics and Hydroinformatics Volume 2
Authors: --- --- ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This Special Issue reports on recent research trends in hydraulics, hydrodynamics, and hydroinformatics, and their novel applications in practical engineering. The Issue covers a wide range of topics, including open channel flows, sediment transport dynamics, two-phase flows, flow-induced vibration and water quality. The collected papers provide insight into new developments in physical, mathematical, and numerical modelling of important problems in hydraulics and hydroinformatics, and include demonstrations of the application of such models in water resources engineering.

Keywords

History of engineering & technology --- chute aerator --- spillway bottom --- air concentration --- air bubble frequency --- air bubble chord length --- evolution of precipitation --- model simulation --- information entropy theory --- desert–oasis areas --- Tarim Basin --- gravity wave model --- dam-break flood --- image processing technology --- experimental study --- cavitation bubble --- high-speed photography --- impact pressure --- micro-jet --- Ningxia–Inner Mongolia --- Yellow River --- riverbank collapse --- BSTEM model --- flood &amp --- dry season --- sediment transport --- finite crest length weir --- FGP (flaring gate pier) --- discharge coefficient --- subcritical flow --- river flow modeling --- sediment transport simulation --- automation of flow modeling --- HEC-RAS controller --- python scripting --- three-dimensional aerator --- multi-horizontal-submerged jets --- energy dissipation --- near-field vibration --- fluctuating pressure --- gate-opening modes --- collapse near a wall --- double cavitation bubble --- tilt distribution cavitation --- parallel cavitation --- pseudopotential lattice Boltzmann model --- numerical simulation --- pooled stepped spillway --- pool weir --- flow property --- surface-piercing propeller --- artificial ventilation --- hydrodynamic performance --- LES-VOF method --- flow-induced vibration --- plane gate --- numerical analysis --- bridge scour --- submerged flow --- physical hydraulic modeling --- ski-jump flow --- spillway outlet --- jet trajectory --- experimental model --- rainfall intensity distribution --- two water jets --- collision in air --- Gaussian distribution --- trajectory line --- clogging --- drip irrigation --- flushing --- particle size distribution --- sediments --- submerged jets --- aerated flow --- plunge pool --- trapezoidal cross-section --- U-shaped channel --- radius-to-width ratio --- slope coefficient --- hydraulic characteristics --- hydraulic jump --- Froude number --- stilling basin with shallow-water cushion (SBSWC) --- large eddy simulation --- best depth --- CFD–DEM coupling --- hydrocyclone --- particle shape --- particle size --- water and sediment separation --- stepped dropshaft --- flow region --- central angle of step --- free surface measurement --- optical motion capturing --- tank test --- wave gauge --- sloshing --- offset jet --- potential core --- decay rate --- k-ε model --- abutment --- overtopping flow --- pressure flow --- scour and velocity field --- Y-shaped confluence channel --- non-submerged rigid vegetation --- longitudinal velocity --- secondary flow --- turbulent kinetic energy --- wetland --- lattice Boltzmann method --- shallow lake --- drag force --- water-saving irrigation development level --- Sichuan province --- TOPSIS method --- experiment --- particle image velocimetry --- 3D confined wall jet --- mean flow --- multiple bubble collapse --- pressure wave energy --- energy conversion rate --- consistent particle method --- solitary wave --- submerged breakwater --- breaking wave --- vortex --- free surface flow --- embankment weir --- bridge piers --- turbulence --- CFD --- sediment --- transforming mechanism --- open channel bend --- velocity distribution --- PIV --- hyporheic exchange --- surface−groundwater flow process --- influencing factors --- orthogonal tests --- sensitivity analysis --- linearly moved irrigation system --- application depth --- moving speed --- uniformity coefficient --- tidal discharge --- phase difference --- tidal channel junction --- flow division --- fluvial acoustic tomography --- wavelet analysis --- DEM --- hydrodynamic modelling --- river bathymetry --- floods --- Bathy-supp --- coherent vortex structure --- backward-facing step --- synchronized PIV --- separation and reattachment --- free shear layer --- vortical evolution


Book
Advances in Hydraulics and Hydroinformatics Volume 2
Authors: --- --- ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This Special Issue reports on recent research trends in hydraulics, hydrodynamics, and hydroinformatics, and their novel applications in practical engineering. The Issue covers a wide range of topics, including open channel flows, sediment transport dynamics, two-phase flows, flow-induced vibration and water quality. The collected papers provide insight into new developments in physical, mathematical, and numerical modelling of important problems in hydraulics and hydroinformatics, and include demonstrations of the application of such models in water resources engineering.

Keywords

History of engineering & technology --- chute aerator --- spillway bottom --- air concentration --- air bubble frequency --- air bubble chord length --- evolution of precipitation --- model simulation --- information entropy theory --- desert–oasis areas --- Tarim Basin --- gravity wave model --- dam-break flood --- image processing technology --- experimental study --- cavitation bubble --- high-speed photography --- impact pressure --- micro-jet --- Ningxia–Inner Mongolia --- Yellow River --- riverbank collapse --- BSTEM model --- flood &amp --- dry season --- sediment transport --- finite crest length weir --- FGP (flaring gate pier) --- discharge coefficient --- subcritical flow --- river flow modeling --- sediment transport simulation --- automation of flow modeling --- HEC-RAS controller --- python scripting --- three-dimensional aerator --- multi-horizontal-submerged jets --- energy dissipation --- near-field vibration --- fluctuating pressure --- gate-opening modes --- collapse near a wall --- double cavitation bubble --- tilt distribution cavitation --- parallel cavitation --- pseudopotential lattice Boltzmann model --- numerical simulation --- pooled stepped spillway --- pool weir --- flow property --- surface-piercing propeller --- artificial ventilation --- hydrodynamic performance --- LES-VOF method --- flow-induced vibration --- plane gate --- numerical analysis --- bridge scour --- submerged flow --- physical hydraulic modeling --- ski-jump flow --- spillway outlet --- jet trajectory --- experimental model --- rainfall intensity distribution --- two water jets --- collision in air --- Gaussian distribution --- trajectory line --- clogging --- drip irrigation --- flushing --- particle size distribution --- sediments --- submerged jets --- aerated flow --- plunge pool --- trapezoidal cross-section --- U-shaped channel --- radius-to-width ratio --- slope coefficient --- hydraulic characteristics --- hydraulic jump --- Froude number --- stilling basin with shallow-water cushion (SBSWC) --- large eddy simulation --- best depth --- CFD–DEM coupling --- hydrocyclone --- particle shape --- particle size --- water and sediment separation --- stepped dropshaft --- flow region --- central angle of step --- free surface measurement --- optical motion capturing --- tank test --- wave gauge --- sloshing --- offset jet --- potential core --- decay rate --- k-ε model --- abutment --- overtopping flow --- pressure flow --- scour and velocity field --- Y-shaped confluence channel --- non-submerged rigid vegetation --- longitudinal velocity --- secondary flow --- turbulent kinetic energy --- wetland --- lattice Boltzmann method --- shallow lake --- drag force --- water-saving irrigation development level --- Sichuan province --- TOPSIS method --- experiment --- particle image velocimetry --- 3D confined wall jet --- mean flow --- multiple bubble collapse --- pressure wave energy --- energy conversion rate --- consistent particle method --- solitary wave --- submerged breakwater --- breaking wave --- vortex --- free surface flow --- embankment weir --- bridge piers --- turbulence --- CFD --- sediment --- transforming mechanism --- open channel bend --- velocity distribution --- PIV --- hyporheic exchange --- surface−groundwater flow process --- influencing factors --- orthogonal tests --- sensitivity analysis --- linearly moved irrigation system --- application depth --- moving speed --- uniformity coefficient --- tidal discharge --- phase difference --- tidal channel junction --- flow division --- fluvial acoustic tomography --- wavelet analysis --- DEM --- hydrodynamic modelling --- river bathymetry --- floods --- Bathy-supp --- coherent vortex structure --- backward-facing step --- synchronized PIV --- separation and reattachment --- free shear layer --- vortical evolution


Book
Advances in Hydraulics and Hydroinformatics Volume 2
Authors: --- --- ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

This Special Issue reports on recent research trends in hydraulics, hydrodynamics, and hydroinformatics, and their novel applications in practical engineering. The Issue covers a wide range of topics, including open channel flows, sediment transport dynamics, two-phase flows, flow-induced vibration and water quality. The collected papers provide insight into new developments in physical, mathematical, and numerical modelling of important problems in hydraulics and hydroinformatics, and include demonstrations of the application of such models in water resources engineering.

Keywords

chute aerator --- spillway bottom --- air concentration --- air bubble frequency --- air bubble chord length --- evolution of precipitation --- model simulation --- information entropy theory --- desert–oasis areas --- Tarim Basin --- gravity wave model --- dam-break flood --- image processing technology --- experimental study --- cavitation bubble --- high-speed photography --- impact pressure --- micro-jet --- Ningxia–Inner Mongolia --- Yellow River --- riverbank collapse --- BSTEM model --- flood &amp --- dry season --- sediment transport --- finite crest length weir --- FGP (flaring gate pier) --- discharge coefficient --- subcritical flow --- river flow modeling --- sediment transport simulation --- automation of flow modeling --- HEC-RAS controller --- python scripting --- three-dimensional aerator --- multi-horizontal-submerged jets --- energy dissipation --- near-field vibration --- fluctuating pressure --- gate-opening modes --- collapse near a wall --- double cavitation bubble --- tilt distribution cavitation --- parallel cavitation --- pseudopotential lattice Boltzmann model --- numerical simulation --- pooled stepped spillway --- pool weir --- flow property --- surface-piercing propeller --- artificial ventilation --- hydrodynamic performance --- LES-VOF method --- flow-induced vibration --- plane gate --- numerical analysis --- bridge scour --- submerged flow --- physical hydraulic modeling --- ski-jump flow --- spillway outlet --- jet trajectory --- experimental model --- rainfall intensity distribution --- two water jets --- collision in air --- Gaussian distribution --- trajectory line --- clogging --- drip irrigation --- flushing --- particle size distribution --- sediments --- submerged jets --- aerated flow --- plunge pool --- trapezoidal cross-section --- U-shaped channel --- radius-to-width ratio --- slope coefficient --- hydraulic characteristics --- hydraulic jump --- Froude number --- stilling basin with shallow-water cushion (SBSWC) --- large eddy simulation --- best depth --- CFD–DEM coupling --- hydrocyclone --- particle shape --- particle size --- water and sediment separation --- stepped dropshaft --- flow region --- central angle of step --- free surface measurement --- optical motion capturing --- tank test --- wave gauge --- sloshing --- offset jet --- potential core --- decay rate --- k-ε model --- abutment --- overtopping flow --- pressure flow --- scour and velocity field --- Y-shaped confluence channel --- non-submerged rigid vegetation --- longitudinal velocity --- secondary flow --- turbulent kinetic energy --- wetland --- lattice Boltzmann method --- shallow lake --- drag force --- water-saving irrigation development level --- Sichuan province --- TOPSIS method --- experiment --- particle image velocimetry --- 3D confined wall jet --- mean flow --- multiple bubble collapse --- pressure wave energy --- energy conversion rate --- consistent particle method --- solitary wave --- submerged breakwater --- breaking wave --- vortex --- free surface flow --- embankment weir --- bridge piers --- turbulence --- CFD --- sediment --- transforming mechanism --- open channel bend --- velocity distribution --- PIV --- hyporheic exchange --- surface−groundwater flow process --- influencing factors --- orthogonal tests --- sensitivity analysis --- linearly moved irrigation system --- application depth --- moving speed --- uniformity coefficient --- tidal discharge --- phase difference --- tidal channel junction --- flow division --- fluvial acoustic tomography --- wavelet analysis --- DEM --- hydrodynamic modelling --- river bathymetry --- floods --- Bathy-supp --- coherent vortex structure --- backward-facing step --- synchronized PIV --- separation and reattachment --- free shear layer --- vortical evolution

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