Browsing Institutt for marin teknikk by Title
Now showing items 2858-2877 of 3421
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Simplified test program for hydrodynamic CFD simulations of wind-powered cargo ships
(Journal article; Peer reviewed, 2022)Four practical simplifications for modeling the hydrodynamic properties of a wind-powered cargo ship with CFD and a route simulation model is evaluated. We first test how much the drift-induced hull forces are dependent ... -
Simulated wind-generated inertial oscillations compared to current measurements in the northern North Sea
(Journal article, 2018)Measured current speed data show that episodes of wind-generated inertial oscillations dominate the current conditions in parts of the northern North Sea. In order to acquire current data of sufficient duration for robust ... -
Simulating emergency response for large-scale fish welfare emergencies in sea-based salmon farming
(Journal article; Peer reviewed, 2022)This paper presents a simulation model for analyzing emergency response for fish welfare emergencies in sea-based fish farming. The model enables decision-makers to evaluate the emergency preparedness level against incidents ... -
Simulating fundamental and higher harmonic VIV of slender structures
(Journal article; Peer reviewed, 2019)Vortex-induced vibrations (VIV) of slender marine structures are complicated response processes, where a number of distinct frequency components might be simultaneously active. These are categorized as fundamental and ... -
Simulating High-Mode Vortex-Induced Vibration of a Riser in Linearly Sheared Current Using an Empirical Time-Domain Model
(Peer reviewed; Journal article, 2021)As the development of offshore oil and gas continues to move into deeper waters, the risers connecting the seabed infrastructure to the offshore platform are getting longer. This means that vortex-induced vibration (VIV) ... -
Simulating installation logistics for wind turbines using feeder vessels
(Master thesis, 2020) -
Simulating riser VIV in current and waves using an empirical time domain model
(Chapter; Peer reviewed, 2017)The theoretical background of an empirical model for time domain simulation of VIV is reviewed. This model allows the surrounding flow to be time varying, which is in contrast to the traditional frequency domain tools. The ... -
Simulating the harvesting process of a sugar-kelp farm
(Master thesis, 2019)På en global skala er behovet for mer matproduksjon tydelig, og mesteparten av dyrket tare brukes innenfor kategorien mat. I Norge var det hovedsakelig interessen for tare som en komponent for produksjon av biodrivstoff ... -
Simulation and Rescheduling of Operation for a RoRo-fleet
(Master thesis, 2013)This master thesis is a part of the MARFLIX (MARitime FLeet size and mIX) project. The research project MARFLIX is a collaboration between NTNU, MARINTEK, DNV and WWL. The overall aim for the MARFLIX project is to develop ... -
Simulation Based Estimation of Power Consumption
(Master thesis, 2019)De siste årene har den maritime industrien fått en betydelig interesse for å redusere drivhusgass utslippene fra næringen. Strenge krav som har trådt i kraft har ført til at skipsbyggere har blitt tvunget til å handle raskt ... -
Simulation model for an LNG ferry
(Master thesis, 2014)Developing regulations for improving safety at sea has been a concern since in-ternational trading became a reality. The International Maritime Organization(IMO) has become the international adopted treaty, which regulates ... -
A Simulation Model for Analysing Weather Impact on Upstream Supply Chain Service Performance
(Master thesis, 2016)In the oil and gas industry, the upstream logistics are defined as the delivery and retrieving of products, and services at offshore installations. In order to maintain a continuous production, offshore installations are ... -
Simulation of a two-stroke diesel engine for propulsion in waves
(Journal article; Peer reviewed, 2016)Propulsion in waves is a complex physical process that involves interactions between a hull, a propeller, a shaft and a prime mover which is often a diesel engine. Among the relevant components, the diesel engine plays an ... -
Simulation of Anchor Loads on Pipelines
(Master thesis, 2016)Incidents where anchor and pipeline interact are rare, but such an event can have drastic consequences. In the report, "Pipeline and Riser Loss of Containment" by HSE, published in 2001 for the UK sector, 44 incidents ... -
Simulation of Anchor Loads on Pipelines
(Master thesis, 2017)Anchor loads on pipelines are in general a rarely occurring event, but the severity when it happens could easily jeopardize the integrity of any pipeline. The environmental and economic consequences of an accident caused ... -
Simulation of breaking focused waves over a slope with a CFD based numerical wave tank
(Chapter, 2017)Extreme wave conditions are always identified with large-amplitude breaking waves in shallow waters. Focused waves can often be used to describe extreme waves which evolve during the nonlinear wave-wave interaction, occurring ... -
Simulation of drilling riser disconnection - Recoil analysis
(Master thesis, 2013)The emergency disconnection system and recoil analysis is required for every offshore drilling unit. Situations can occur where the vessel needs to disconnect from the well, it can be to large forces that are being transferred ... -
Simulation of dynamic umbilical installation effects
(Master thesis, 2010)The background for this study is a request from Technip related to the need of installing of long length umbilicals utilizing large capacity vessels designed for installation of steel pipelines. The installation vessel, ... -
Simulation of flow around a Viking ship rudder.
(Master thesis, 2015)Computational fluid dynamics (CFD) is a numerical method of solving the Navier-Stokes equations for all points in a grid, or mesh. By performing this operation over multiple time steps, the resulting velocity and pressure ... -
Simulation of Flow Around an Oil Boom
(Master thesis, 2015)The interFoam solver is used in this thesis. This solver applies the VOF method to trace the interface between two fluids. This method and the interFoam solver is thoroughly discussed in this thesis. A convergence study ...