IV International Conference on Computational Methods in Marine Engineering (MARINE 2011) Lisbon, Portugal, 28-30 September, 2011
Proceedings of the IV International Conference on Computational Methods in Marine Engineering
Held in Lisbon, Portugal, 28-30 September, 2011
A publication of:
International Center for Numerical Methods in Engineering (CIMNE) Barcelona, Spain
L. Eça, E. Oñate, J. García, T. Kvamsdal and P. Bergan (Eds.)
© The authors
Summary
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CFD in ship hydrodynamics – result of the Gothenburg 2010 workshop
(2011)
Conference report
Open AccessThe Gothenburg 2010 Workshop on Numerical Hydrodynamics gathered 33 groups with computations for one or more of 18 test cases. All results were collected and discussed at a meeting in Gothenburg in December 2010. In the ... -
Offshore renewable energy, the experience of a design office
(2011)
Conference report
Open AccessA general review of offshore renewable energy is given, showing examples and providing some important conclusions we have arrived at as a design office. -
Structural performance and dynamic response of semi-submersible offshore platforms using a fully coupled FE-SPH approach
(2011)
Conference report
Open AccessAn explicit Finite Element (FE) software package with an embedded and fully coupled Smoothed Particle Hydrodynamics (SPH) solver is used to investigate the dynamic response of a floating (moored) offshore platform subject ... -
An absorbing boundary condition for regular and irregular wave simulations
(2011)
Conference report
Open AccessIn this paper the use of an absorbing boundary condition (ABC) is investigated for the numerical simulation of regular and irregular waves in three dimensional computational domains where Navier-Stokes equations describe ... -
Rans predictions of roll viscous damping of ship hull sections
(2011)
Conference report
Open AccessThe unsteady flow around a forced rolling hull section with and without bilge keels is computed using URANS code ReFRESCO. In this paper, extensive studies have been carried out in the dependence on grid resolution and ... -
Viscous-flow calculations for model and full-scale current loads on typical offshore structures
(2011)
Conference report
Open AccessIn this paper, CFD calculations for current loads on an LNG carrier and a semi-submersible are presented, both for model and full-scale situations, for current angles ranging from 180 to 0 degrees. MARIN’s in-house URANS ... -
Reliability-based dynamic positioning of floating vessels with riser and mooring system
(2011)
Conference report
Open AccessTo maintain safety of a floating vessel with associated slender components such as risers and mooring line, the vessel is normally kept within a limited region. To specify a safe position in that region, this paper ... -
Numerical simulation of extreme wave impact on offshore platforms and coastal constructions
(2011)
Conference report
Open AccessThe simulation tool ComFLOW, developed for accurate predictions of hydrodynamic wave loading, is based on the Navier-Stokes equations. The free-surface dynamics is described through VOF, with local height-function approach ... -
Interaction between wave and coastal structure: validation of two lagrangian numerical models with experimental results
(2011)
Conference report
Open AccessNumerical modeling of the interaction among waves and coastal structures is a challenge due to the many nonlinear phenomena involved, such as, wave propagation, wave transformation with water depth, interaction among ... -
Numerical prediction of ship-generated waves in restricted channel
(2011)
Conference report
Open AccessShip-generated gravity waves caused by a moving vessel in a restricted channel are simulated by solving three dimensional Navier-Stokes equations including the SST k - ω/ε model for turbulence processes. The main ... -
Analysis of superficial anomalies observed in Iberia southwest coast - numerical model approach
(2011)
Conference report
Open AccessIn this paper a characterization of observed sea surface anomalies in the Spanish southwest coast (more specifically Nerja- La Herradura and Cabo de Gata areas) is done. This study aims to explain the origin of observed ... -
Modeling of solitary wave run-up using localized DQM combined with real time am algorithm
(2011)
Conference report
Open AccessAn efficient numerical model, based on non-linear shallow water equations, was developed for propagation and run-up of non-breaking solitary waves. For treatment of the moving shoreline, an Eulerian-Lagrangian mapping ... -
Numerical modelling of waves interacting with the breakwaters of Leixões Harbour, Portugal
(2011)
Conference report
Open AccessTwo numerical models – AMAZON, based on the non-linear shallow-water (NLSW) equations, and IH-2VOF, based on the Reynolds averaged Navier–Stokes (RANS) equations – are planned to be used to model the hydrodynamic processes ... -
Implementation and validation of a new wave breaking criterion in a nonlinear wave propagation model
(2011)
Conference report
Open AccessThis paper describes the implementation and validation in the BOUSS-WMH numerical model of a new trigger mechanism for the initiation and termination of wave breaking. The initial approach is based on the vertical ... -
Numerical simulation of an oscillating water column wave energy converter with and without damping
(2011)
Conference report
Open AccessThis paper presents numerical simulations that predict the action of a regular incident wave on a simplified Oscillating Water Column Ocean Wave Energy Converter (OWC-OWEC) model. This model is a vertical tube of small ... -
Vortex induced vibration of an elastically mounted circular cylinder with forced rotataions
(2011)
Conference report
Open AccessFlow over an elastically mounted circular cylinder with forced rotation is numerically studied in this paper. The cylinder vibrates in in-line and cross-flow directions, and the rotating speed is constant. Reynolds number ... -
The effect of non-linear free surface on bluff body vortex dynamics and control
(2011)
Conference report
Open AccessA viscous incompressible two-fluid model with a circular cylinder under streamwise oscillations is investigated at a Reynolds number of 200 and at a displacement amplitude of A = 0.13 and for the forcing cylinder oscillation ... -
Numerical simulation on hydroelastic response of structure under impact load from water using eulerian scheme with lagrangian particles
(2011)
Conference report
Open AccessHydroelasticity caused by water impact is of concern in many applications of ocean engineering/naval architect and a complicated physical phenomenon. We have developed a coupled Eulerian scheme with Lagrangian particles ... -
Calculation of the flow around two interacting ships
(2011)
Conference report
Open AccessThe paper reviews calculations of three dimensional (3D) unsteady cross flow past a pair of ship sections in close proximity and comparisons of the results with measurements. The ship sections have different breadth and ... -
Turning ability characteristics study of a twin screw vessel by CFD
(2011)
Conference report
Open AccessThe turning circle manoeuvre of a self–propelled tanker like ship model is numerically simulated through the integration of the Unsteady Reynolds Averaged Navier– Stokes (URANS) equations coupled with the equations of ... -
Numerical simulations of the sails of a XVIth century portuguese nau
(2011)
Conference report
Open AccessThe discovery and archaeological excavation of the “Nossa Senhora dos Martires” wreck in the Tagus river between 1996 and 2001 renewed the interest in studying the ships (naus) that were used for transporting people and ... -
Computational investigation of non-body-of-revolution hull form maneuvering characteristics
(2011)
Conference report
Open AccessIn this study, Reynolds Averaged Navier-Stokes (RANS) computations are used to shed insight into maneuvering characteristics for the DTMB Series 66 non-body-of-revolution (Non-BOR) hull forms. Non-BOR hull forms are of ... -
Simulation of submarine manoeuvring using navier-stokes solver
(2011)
Conference report
Open AccessThe prediction of manoeuvring of underwater vehicles such as UAV or submarines is a key point for their performance and safety. From an experimental point of view, such manoeuvring characteristics can be determined either ... -
An optimization tool for the analysis and control of blowing and venting operations in manned submarines
(2011)
Conference report
Open AccessMotivated by the study of the potential use of ballast tanks blowing and venting operations as a way to improve the manoeuvrability of manned submarines, the aim of this work is to develop a computer tool capable of ... -
KVLCC2 benchmark data including uncertainty analysis to support manoeuvring predictions
(2011)
Conference report
Open AccessIn this paper, it is elaborated for the first time how the uncertainty analysis for free sailing model tests is performed. This is applied on free sailing model tests that are carried out on the KVLCC2. The uncertainty ... -
A numerical model to determine ship manoeuvring motion in regular waves
(2011)
Conference report
Open AccessA numerical program for time-domain calculations of the manoeuvring behaviour in regular waves is presented. The program is based on frequency-dependent coefficients, transfered to time-domain by using the impulse response ... -
Viscous-flow calculations for KVLCC2 in deep and shallow water
(2011)
Conference report
Open AccessIn the SIMMAN 2008 workshop, the capability of CFD tools to predict the flow around manoeuvring ships has been investigated. It was decided to continue this effort but to extend the work to the flow around ships in shallow ... -
Coefficients identification for ship manoeuvring simulation based on optimization techniques
(2011)
Conference report
Open AccessThe frequency of ship grounding and collisions led to model the various factors involved during the course of a maneuvering ship. In this paper we present a numerical procedure to identify the hydrodynamic coefficients ... -
High energy ship collisions with jacket supported offshore wind turbines
(2011)
Conference report
Open AccessThis document provides information and instructions for preparing a Full Paper to be included in the Proceedings of MARINE 2011 Conference. -
Numerical simulation of energy buoy motion in wave
(2011)
Conference report
Open AccessThis document provides a description of the numerical method for modelling the energy buoy motion on wave. Computational results were compared with results obtained from model tests carried out on model basin. -
Examples of important ongoing research topics for offshore wind energy
(2011)
Conference report
Open AccessThe aim of the paper is to address some challenges related to offshore wind energy. A first example shows some results from an ongoing project on accurate computation of wave loads on monopole foundations. The effects ... -
Analytical and computational approach for studying the interaction between waves and cylindrical wave energy converters oscillating in two modes
(2011)
Conference report
Open AccessOcean wave energy may be recovered by oscillating wave energy converters. The energy converter studied in this work is a horizontally orientated cylinder which may be placed at different depths in the sea. The cylinder ... -
The variation in wake structure of a tidal stream turbine with flow velocity
(2011)
Conference report
Open AccessA combined Blade Element Momentum - Computational Fluid Dynamics (BEM-CFD) model is applied to a 10 m diameter tidal stream turbine blade and the supporting nacelle and tower structure in a 700 m long rectangular channel. ... -
Efficient numerical simulation of offshore structures and wind turbines on general purpose graphics processing units
(2011)
Conference report
Open AccessOffshore wind turbines are complex systems that are usually simulated in the time-domain to take account of non-linear effects. The response of the structure is calculated by the finite-element method, or with the more ... -
Advances in the development of a time-domain uns ructured finite element method for the analysis of waves and floating structures interaction
(2011)
Conference report
Open AccessBeing capable of predicting wave-structure interaction in the time domain is of great interest for the offshore industry. However most computer programs used in the industry work in the frequency domain. Therefore, the ... -
A mesh adaptive compressible euler model for the simulation of cavitating flow
(2011)
Conference report
Open AccessWe present computations of cavitating flow over a NACA0015 hydrofoil. The simulations are performed by a finite volume compressible Euler model with dynamic mesh adaptation. The adaptive mesh refinement (AMR) is driven ... -
Numerical and experimental investigation into propulsion and cavitation performance of marine propeller
(2011)
Conference report
Open AccessThis paper discusses the application of the CFD to transitional and cavitating flow around marine propellers. Especially the emphasis is put on the adaption of the 3 equations turbulence model for the non-cavitating flow ... -
Exploratory RANS simulations of partial cavitation and its dynamics
(2011)
Conference report
Open AccessPartial cavitation on a 2D foil at given incidence goes through various stages when the cavitation number is lowered. This paper explores by numerical simulation the transition from more or less steady to dynamic behaviour, ... -
Numerical prediction of erosive collapse events in unsteady compressible cavitating flows
(2011)
Conference report
Open AccessThe objective of the present investigation is the numerical prediction of the potential of a flow to inflict surface damage by cavitation. For this purpose, physical criteria are derived that detect and quantify relevant ... -
The BEM as a tool for analysing unsteady propulsor motions, with applications to maneuvering propellers and biomimetic flows
(2011)
Conference report
Open AccessThe aim of this paper is to show how an unsteady BEM time stepping algorithm can be used in predicting the unsteady performance of maneuvering propellers and biomimetic flows. The main innovation of the developed methodology ... -
Adaptive mesh refinement in marin’s viscous flow solver refresco: implementation and application to steady flow
(2011)
Conference report
Open AccessCurrently MARIN’s viscous flow solver ReFRESCO is being improved by adding an adaptive meshing strategy. The method considers the mesh as an unstructured collection of elements and works with a database that defines ... -
Euler-Euler and Euler-Lagrange approaches to cavitation modelling in marine applications
(2011)
Conference report
Open AccessTwo different approaches to cavitation modelling are investigated in the paper. With the Euler-Euler approach vapour-volume fraction is computed based on a volume of fluid method in combination with a simple mass-transfer ... -
RANS simulation of the performances of contra-rotating propellers
(2011)
Conference report
Open AccessThe prediction accuracy of the open-water performance and the unsteady thrusts and torques arising from the interaction between the forward and aft propellers are investigated by using different RANS modeling approaches. ... -
RANS simulations using overset meshes
(2011)
Conference report
Open AccessThe paper describes the implementation of the overset grids approach into a finite volume Navier-Stokes simulation tool. The algorithm is capable of handling an arbitrary number of overset grids using a priority-aware ... -
Use of RANS for analysis of a high-speed sealift concept vessel
(2011)
Conference report
Open AccessTo better understand performance for high speed surface ships, Reynolds Averaged Navier-Stokes (RANS) calculations are performed on the Joint High Speed Sealift (JHSS), which is a monohull concept with four waterjets. ... -
On the application of wall functions in ship viscous flows
(2011)
Conference report
Open AccessThis paper presents a numerical study on quantifying the effect of wall function boundary conditions on the calculation of ship viscous flows based on the RANS equations at model and full scale Reynolds numbers. Grid ... -
Large eddy simulation of the flow past the DTMB5415 surface combatant hull with and without bilge keels
(2011)
Conference report
Open AccessThe flow around the DTMB5415 surface combatant hull with and without bilge keels is studied numerically by the use of a Large Eddy Simulation (LES) method. The main purpose for bilge keels is to reduce roll motions when ... -
Fast robust design optimisation methods applied to ship hydrodynamics
(2011)
Conference report
Open AccessThis paper describes the benefits of fast multi-objective design optimisation methods applied to ship hydrodynamics and coupled to Computational Fluid Dynamics models. -
Adjoint aftship re-design for wake optimisation under the influence
(2011)
Conference report
Open AccessThe paper outlines means for an efficient RANS-based hull-design optimisation process. The adjoint-based wake design method previously applied to an unpropelled ship [5] was now extended to optimise a ship hull in ... -
Prediction of the transom flow regime with viscous free surface computations
(2011)
Conference report
Open AccessA steady free-surface fitting RANS method is used to accurately and efficiently compute the flow near a ship‟s transom. The chosen block topology is very well suited for the prediction of such flows: viscous free-surface ... -
Anisotropic mesh refinement in ship flow simulation with free surface
(2011)
Conference report
Open AccessFor the simulation of water flow with waves, grid refinement must be anisotropic to limit the total grid size. For these flows, the grid has to be refined at the water surface, to resolve the conservation law which ... -
A numerical and experimental study on the hydrodynamic of a catamaran varying the demihull separation
(2011)
Conference report
Open AccessA complementary experimental and numerical study of the interference effect for a fast catamaran is presented. Resistance, sinkage and trim are collected by towing tank experiments for Froude number in the range from 0.2 ... -
Feasibility of an innovative wing mast for a sustainable use in fishing boats, tankers and cargo ships
(2011)
Conference report
Open AccessThe purpose of this paper is to demonstrate the feasibility of an innovative project of multi-role fishing boat based on a SWATH catamaran architecture, high efficiency propellers and innovative wind sail auxiliary ... -
Ship electric propulsion: analyses through modeling and simulation
(2011)
Conference report
Open AccessElectric propulsion has been applied to ships via DC motors for more than a century offering effective manoeuvrability, precise and smooth speed control, reduced space machinery, low noise and low pollution rates. The ... -
Analysis of diagnostic informativeness of the exhaust temperature of a naval gas turbine
(2011)
Conference report
Open AccessThis article deals with diagnostic technology of naval gas turbine engines based on exhaust temperature measurements. It contains a detailed discussion devoted unsteady thermal-flow processes worked out within the ... -
Quantitative assessment of operation of ship main diesel engine
(2011)
Conference report
Open AccessOperation of ship propulsion system is associated with realization of definite operational goals. If to elements of the system the operational reliability strategy could be applied, the situation would be very simple as ...
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