MagazinePropulsion tests - quasi-steady for efficiency and quality
MARIN Report 121
17 aug. 2017
Reading time 3 minutes
Report explains why the quasi-steady approach is gradually replacing the conventional method in model propulsion tests.
PaperBlock-preconditioners for the incompressible Navier–Stokes equations discretized by a finite volume method
Journal of Numerical Mathematics, vol. 25, Issue 2, pp. 89–105
26 jul. 2017
The modified augmented Lagrangian preconditioner has attracted much attention in solving nondimensional Navier–Stokes equations discretized by the ...
PaperExperimental determination of water motions inside a moonpool
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2017), Trondheim, Norway
14 jul. 2017
The substantial water motions that can occur inside a moonpoolwhen a ship is operating in a formed sea represent a criticalissue for operators, as ...
stability, seakeeping and ocean engineeringwaves, impacts and hydrostructuralmeasurements and controldata sciencerenewablesoil and gasinfrastructuremarine systemslife at seaseakeepingtransport and shippingmodel testingsloshingdampingoffshore engineering
PaperWave-induced current in a seakeeping basin
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2017), Trondheim, Norway
12 jul. 2017
During tests in MARIN’s wave basins, it was observed that large-scale current patterns may develop under the influence of wave generation and ...
stability, seakeeping and ocean engineeringwaves, impacts and hydrostructuralmeasurements and controldata sciencemodel testingwaves & motionscurrentadded resistance
PaperExperimental Study on the Vortex-Induced Motions (VIM) of a Semi-Submersible Floater in Waves
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE), Trondheim, Norway
25 jun. 2017
Recent studies suggest that the vortex-induced motions (VIM) of a semi-submersible found in model tests over-predicts the response in the field, ...
PaperCFD Verification and Validation Study for a Captive Bullet Entry in Calm Water
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2017), Trondheim, Norway
25 jun. 2017
As a step towards complex impact loads cases, e.g. lifeboat drop tests or ship/platform slamming in waves, a verification and validation (V&V) study ...
cfd developmentcfd/simulation/desk studiesresearch and developmentresearch
PaperThruster-wave Interaction during DP Stationkeeping - Model Tests in Open Water and under a Ship Hull
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2017), Trondheim, Norway
25 jun. 2017
Wave orbital motions may cause variations in the inflow conditions of thrusters, resulting in variations in thrust and torque. Physical scale model ...
manoeuvring and nautical studiesstability, seakeeping and ocean engineeringwaves, impacts and hydrostructuralmeasurements and controldata sciencesafe operations and human factorsdynamic positioningmanoeuvringrenewablesoffshore operationsoil and gasinfrastructuremarine systemslife at seaseakeepingdefencepassengers and yachtingtransport and shippingmodel testingresearch and developmentloads and responsesoperationswaves & motionsoffshore engineeringresearch
PaperValidation exercises for the calculation of the flow around a squared column with rounded corners at high Reynolds numbers with the rans equations
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE), Trondheim, Norway
25 jun. 2017
This paper presents Validation studies, i.e. evaluation of the modelling error, for the ensemble averaged Navier-Stokes (RANS) equations ...
cfd developmentcfd/simulation/desk studiesresearch and developmentverification and validationresearch
PaperSimulation of wave impacts at belwind offshore wind farm and comparison with full-scale measurements
36th Conference on Ocean, Offshore and Arctic Engineering (OMAE2017), Trondheim, Norway
25 jun. 2017
Reading time 3 minutes
The effects of operational wave loads and wind loads on offshore monopile wind turbines are well understood. For most sites, however, the water ...
waves, impacts and hydrostructuralcfd developmenthydrostructuralrenewablesoffshore wind
PaperDetermining Thruster-Hull Interaction for a Drill-Ship Using CFD
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE), Trondheim, Norway
25 jun. 2017
In this paper CFD results are presented for the thrusterhull interaction effects for a drillship with 6 azimuthing thrusters. The results using ...
manoeuvring and nautical studiessustainable propulsioncfd developmentcfd/simulation/desk studiesdynamic positioningmanoeuvringresistance and propulsionoil and gasinfrastructuremarine systemsdefencepassengers and yachtingtransport and shippingresearch and developmentresearch
PaperWave-in-Deck Impact Loads in Relation with Wave Kinematics
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2017), Trondheim, Norway
25 jun. 2017
Breaking waves have been studied for many decades andare still of interest as these waves contribute significantly to thedynamics and loading of ...
renewablesoil and gasinfrastructuremarine systemslife at seaoffshore engineering
PaperHydrodynamic working principles of Energy Saving Devices in ship propulsion systems
International Shipbuilding Progress
22 jun. 2017
Throughout the years, many types of Energy Saving Devices (ESDs) have been introduced to the naval industry, each claiming to achieve several ...
propulsionenergy saving
PaperOn the Use of the γ-Reθ Transition Model for the Prediction of the Propeller Performance at Model-Scale
Fifth International Symposium on Marine Propulsors (SMP), Espoo, Finland
12 jun. 2017
The goal of the present work is to improve the prediction of propeller performance at model-scale using a local correlation transition model. An ...
sustainable propulsioncfd developmentcfd/simulation/desk studiestime-domain simulationsresistance and propulsionmarine systemsresearch and developmentpropeller designpropulsionsimulationspropellerpropulsorresearch
PaperA semi-empirical method to predict broadband hull pressure fluctuations and underwater radiated noise by cavitating tip vortices
Fifth International Symposium on Marine Propulsors (SMP’17), Espoo, Finland
12 jun. 2017
A semi-empirical method is presented that predicts broadband hull pressure fluctuations and underwater radiated noise due to propeller tip vortex ...
sustainable propulsioncfd developmentcfd/simulation/desk studiestime-domain simulationsnoise and vibrationresistance and propulsionmarine systemsdefencepassengers and yachtingtransport and shippingresearch and developmentcavitationpropeller designpropulsionsimulationspropellerpropulsorresearch
PaperComputational fluid dynamics prediction of marine propeller cavitation including solution verification
Fifth International Symposium on Marine Propulsors (smp’17), Espoo, Finland
12 jun. 2017
This paper analyses the effect of grid refinement on computational fluid dynamics simulations of cavitating propeller flow. Refinement is made both ...
sustainable propulsioncfd developmentcfd/simulation/desk studiestime-domain simulationsresistance and propulsionmarine systemsdefencepassengers and yachtingtransport and shippingresearch and developmentcavitationpropeller designpropulsionsimulationsverification and validationpropellerpropulsorresearch