Browsing Institutt for marin teknikk by Issue Date
Now showing items 261-280 of 3421
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Disturbance rejection by acceleration feedforward: Application to dynamic positioning
(Journal article, 2011)This paper addresses environmental disturbance rejection in dynamic systems by means of acceleration feedforward. A feedforward structure calculates the environmental force and magnitude by comparing the filtered acceleration ... -
Sloshing induced tank-roof impact with entrapped air pocket
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:38, Doctoral thesis, 2011) -
Tensile armour buckling in flexible pipes
(Master thesis, 2012)The exible pipelines has been widely used by the oil and gas industry the lastdecades and this trend is expected to continue as the operating depths are increasedfurther. For deep water applications the radial and lateral ... -
Long-Term Wave Power Statistics for Individual Waves
(Master thesis, 2012)Long-term statistics for wave power describes the waves that will occur over years and their energy. This can be found by putting together short-term statistics for individual waves and statistics from sea states. All the ... -
Speed and powering prediction for ships based on model testing
(Master thesis, 2012)The ITTC78 method was originally designed for conventional single screw ships, but has later been modified to adapt twin screw ships and podded propulsors. Nowadays even more unconvensional propulsors are introduced, and ... -
Investigation of Hydrodynamic Aspects of the Design of the Universal Buoyancy Concept (UBC) Loading Buoy
(Master thesis, 2012)A new loading and discharge concept for ships, referred to as the Universal Buoyancy Concept (UBC), is proposed as an effective alternative to land based infrastructure for distribution of primarily LNG. The UBC system ... -
Development and Commissioning of a DP system for ROV SF 30k
(Master thesis, 2012)This Master thesis details the development of a mathematical model of ROV SF30k, and its implementation into a DP control system developed by Espen Tolpinrud.The project was performed as a part of the Applied Underwater ... -
Modeling and Control of ROV Manipulator
(Master thesis, 2012)The main objective of this thesis is to investigate and present the most relevant techniques and topics within the field of robot modeling and control. The studies will then be used to develop a working control system for ... -
Cost-Efficient Emission Control Area Compliancy
(Master thesis, 2012)The overall aim of this case study is to find the most cost-effective strategy for complying with the IMO s MARPOL Convention Regulation 13 & 14 in the Baltic Sea Emission Control Areas (ECAs) in the period from 2015 to ... -
Maneuvering of two interacting ships in waves
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:361, Doctoral thesis, 2012)This thesis describes the development of a module based maneuvering prediction system for one ship or two interacting ships in calm water or waves. The work is a continuation and generalization of the previous work of ... -
Analysis of Explosion Load Effects in Pipe-racks: Explosion simulation and its respective structural response on pipe-racks on a offshore topside module
(Master thesis, 2012)An explosion on a typical offshore installation is a critical, however rare accidental event which may result in damage and loss of property, and in the worse case loss of lives. Top-side sections on an offshore installation ... -
Use of CFD to Study Hydrodynamic Loads on Free-Fall Lifeboats in the Impact Phase.: A verification and validation study.
(Master thesis, 2012)In the past, testing of lifeboat design has been carried out solely by experimental means. However, due to the large number of factors which influence the loads on the lifeboat structure and its occupants, optimization ... -
DISCONNECTION OF WORKOVER RISERS ON VERY DEEP WATER
(Master thesis, 2012)for advanced riser analysis. Deep water oil recovery have forced a change in thesystems used to tension risers, the traditional wire-pulley systems are replacedwith direct acting hydraulic-pneumatic systems. In order to ... -
Numerical and experimental investigation of stationkeeping in level ice
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:329, Doctoral thesis, 2012)Stationkeeping method is crucial for successful marine operations in ice-covered waters. Depending on the type of structure, two methods are used in the numerical study, namely mooring system and DP combined mooring ... -
Semi-Submersible Platform Design to Meet Uncertainty in Future Operating Scenarios
(Master thesis, 2012)This master thesis in marine systems design is about how to assess the future uncertainty in a design setting, or as the topic puts it; semi-submersible platform design to meet uncertainty in the future operation scenarios. ... -
Sikre og mindre arealkrevende fortøyningssystem for havbruksanlegg
(Research report, 2012)Tirsdag 5.juni ble det arrangert en workshop med en kombinasjon av innlegg/foredrag og gruppearbeid for å belyse problemstillinger knyttet til arealbruk og forankring av flytende oppdrettsanlegg. Basert på presentasjoner ... -
Analysis and correction of sea trials
(Master thesis, 2012)When a ship-owner orders a vessel from a shipyard, a contract is written to confirm and guarantee the agreement for both parts. An important requirement of the contract is the vessel's speed at a given engine power, RPM ... -
Screening LCA of GHG emissions related to LNG as ship fuel
(Master thesis, 2012)In view of the increasingly popular climate change debate worldwide, maritime transport is under pressure to create sustainable solutions for a cleaner future.One of these solutions is using liquefied natural gas (LNG) as ... -
Dynamic Model Predictive Control for Load Sharing in Electric Power Plants for Ships
(Master thesis, 2012)The main contribution of this thesis is an investigation of model predictive control(MPC) for marine diesel electric power plants. Recommendations and new ideasfor further development are emphasized.The motivation of the ... -
RISER CONCEPTS FOR DEEP WATERS
(Master thesis, 2012)Oil and gas exploration and production activities in deep and ultra deep waters in hostile environments necessitates the need to develop innovative riser systems capable of ensuring transfer of fluids from the seabed to a ...