Blar i Institutt for marin teknikk på utgivelsesdato
Viser treff 301-320 av 3421
-
Comparison between Measured and Calculated Riser Response
(Master thesis, 2012)Well intervention operations can inflict large strains on a wellhead. The seabed in the North Sea is very rigid up to the point where the sea water meets the mud or sand. This is one of the reasons why wellheads operating ... -
Optimization of Bow Shape for Large, Slow Ships
(Master thesis, 2012)Traditionally ships have been optimized for minimizing the fuel consumption in calm water. For slow, large ships like tankers and bulk carriers this has resulted in very blunt bows with high added resistance due to waves. ... -
Lattice Boltzmann Simulations on a GPU: An optimization approach using C++ AMP
(Master thesis, 2012)The lattice Boltzmann method has become a valuable tool in computational fluid dynamics, one of the reasons is due to the simplicity of its coding. In order to maximize the performance potential of today s computers, code ... -
Design of a Riser Equipment Handling System for a Well Intervention Unit
(Master thesis, 2012)A Well Intervention Unit performs subsea intervention on different water depths ranging from approximately 800-3000 meters. During a change of operations sites, between two neighbouring wells at different water depths, the ... -
Non-linear Analysis of Wind Load Subjected Novel Flare Tower Design for Sevan Marine
(Master thesis, 2012)Non-linear analysis of wind load subjected flare tower in Abaqus -
Octabuoy Concept and Spar Buoys: Non Linear Effects and Analysis
(Master thesis, 2012)The age of the easy accessible hydrocarbon goes towards the end and new more challenging fields is the future of the oil industry. This is often synonymous with large depths where sea bed mounted platforms are highly ... -
Calculation of Added Mass in the Proximity of the Seabed for an Oscillating Disc
(Master thesis, 2012)Calculations have been made with the commercial CFD-software Ansys Fluent, with dynamic mesh. -
Maritime fleet size and mix problems: An optimization based modeling approach
(Master thesis, 2012)This master thesis addresses the maritime fleet size and mix problem (MFSMP). Finding the optimal fleet size and mix of ships for future needs is arguably the single most important decision of a ship owner. This thesis ... -
Large Eddy Simulations of Three-Dimensional Flow Around a Pipeline in a Uniform Current
(Chapter; Peer reviewed, 2012)Three-dimensional (3D) modeling of the flow around a circular cylinder in a steady, uniform current subjected to low and intermediate Reynolds numbers (Re) is considered. Large eddy simulations (LES) are used to simulate ... -
Mathematical Modelling of a Foil Propulsion System
(Master thesis, 2012)This thesis considers a foil propulsion system on a supply vessel. In analysing the potential of a foil propulsion system, it is imperative to establish a rigid mathematical model. In that respect, modelling of the dynamic ... -
Verifying and Validation of a Manoeuvring Model for NTNU's Research Vessel R/V Gunnerus
(Master thesis, 2012)MARINTEK's ship motion simulation program SIMAN (ShipX manoeuvring module) is used to develop a ship motion model for NTNU's research vessel R/V Gunnerus. SIMAN uses a 3-DOF linear mathematical model to describe the vessel's ... -
Analysis of accidental iceberg impacts with LNG tank carriers
(Master thesis, 2012)The number of collisions between ships and icebergs are increasing in correlation with the increase of the number of ships sailing in Arctic areas. Due to the exploitation of gas fields in Arctic areas, the LNG shipping ... -
Parameter Sensitivity of Short-term Fatigue Damage of Spar-type Wind Turbine Tower
(Master thesis, 2012)The World s energy demand is rapidly increasing and a good viable renewable energy source is wind power. The land-based knowledge and experience the onshore wind turbine industry possess is used to develop offshore wind ... -
Numerical Simulations of Viscous Flow Around Stepped Circular Cylinder
(Master thesis, 2012)A stepped cylinder could be a desired design for an offshore buoy or SPAR platform. The geometry of a stepped cylinder consists of a small diameter cylinder (d) placed on top of a large diameter cylinder (D). This master ... -
Modelling and control of underwater inspection vehicle for aquaculture sites
(Master thesis, 2012)Underwater vehicles such as AUVs and ROVs with hovering capabilities is a promising method for inspection of net integrity in large scale, sea based, salmon farms. The location of the salmon farms cause underwater vehicles ... -
Ice-Induced Loading on Ship Hull During Ramming
(Master thesis, 2012)As a result of the steadily increasing activities related to marine technology in Arctic regions, Det Norske Veritas has launched an ice load monitoring project to gather knowledge of the ice conditions and prevailing ... -
Flexible Pipe Stress and Fatigue Analysis
(Master thesis, 2012)Fatigue is an important character for the flexible pipes as they are always exposed to dynamic loading. For nonbonded flexible pipes, fatigue and stress analysis can be performed based on different assumptions of slip ... -
Modular Capabilities on Offshore Support Vessels
(Master thesis, 2012)The report is divided into three different categories; background, concept evaluation and comparison and the methodology development. The background gives a short introduction of product architecture, modularity and ... -
Structural resistance of polar ships and FPSO´s to ice loading
(Master thesis, 2012)Due to the substantial increase in oil and gas activities in Polar areas the demand for ice strengthen vessel has increased greatly. This increase in demand has highlighted the importance of designing ice strengthened ship ... -
Design criteria for offshore feed barges
(Master thesis, 2012)The fish farming industry faces some problems for the future as the escaping of fish and fish lice. One solution to these problems could be to move the farms further offshore. The main focus of the industry is on the cages ...