Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 6312-6331 av 23499
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Dynamic optimization of railway catenary system by turning unwanted lumped-mass into tuned-mass
(Chapter, 2017)The railway catenary is suspended to its supports with droppers, clamps and oth-er fittings. These lumped-masses are made light and small to minimize disturbances. The mass-es cannot be completely removed but can be adjusted ... -
Dynamic Parameter Investigation of a Full Scale Laboratory Overhead Contact Line Section Model
(Master thesis, 2015)In the dynamic parameter investigation of a full scale laboratory section model of a overhead contact line, the effects of tension force and the effect of removing a dropper is of interest. The thesis present the results ... -
Dynamic Performance of High-Speed Railway Overhead Contact Line Interacting With Pantograph Considering Local Dropper Defect
(Peer reviewed; Journal article, 2020)The local dropper defect is the most common fault in the early service stage of the overhead contact line (OCL) system. The plastic deformation and loose of a dropper may cause the variation of the contact line height, ... -
Dynamic Positioning in Extreme Sea States: Improving Operability Using Hybrid Design Methods
(Master thesis, 2014)This thesis investigates the performance of high-level hybrid dynamic positioning (DP) algorithms in extreme environmental conditions. A vessel in DP uses the thrusters as the sole means of keeping position in wind, waves ... -
Dynamic Positioning of Marine Vessels in Ice
(Doctoral thesis at NTNU;2016:168, Doctoral thesis, 2016)This thesis is a collection of papers focusing on various aspects of dynamic positioning of marine vessels in ice. Most emphasis is put on the dynamic broken, or managed, sea-ice environment where pioneering operations ... -
Dynamic Positioning of Surface Effect Ships using vent valve actuation
(Master thesis, 2019)For en offshore-arbeidstaker i olje- og gassindustrien er helikoptertransporten til installasjonen den aktiviteten knyttet til den høyeste risikoen. Et alternativ til personelltransport ved hjelp av helikopter er å bruke ... -
Dynamic Positioning using Deep Reinforcement Learning
(Master thesis, 2020)Classic methods for Dynamic Positioning (DP) of surface vessels often consists of first calculating desired forces and moments to exert on the vessel by using a motion controller, followed by a thrust allocation scheme for ... -
Dynamic Positioning using Deep Reinforcement Learning
(Journal article; Peer reviewed, 2021)This paper demonstrates the implementation and performance testing of a Deep Reinforcement Learning based control scheme used for Dynamic Positioning of a marine surface vessel. The control scheme encapsulated motion control ... -
Dynamic probabilistic risk assessment of decision-making in emergencies for complex systems, case study: Dynamic positioning drilling unit
(Peer reviewed; Journal article, 2021)Decision-making in emergency situations is a risky and uncertain process due to the limited information and lack of time. Some key problem parameters, such as the time required to complete important response tasks, must ... -
Dynamic Process Model Development and Validation with Transient Plant Data Collected from an MEA Test Campaign at the CO2 Technology Center Mongstad
(Journal article; Peer reviewed, 2017)This work focuses on the development and validation of a dynamic process model of the post-combustion CO2 chemical absorption process with temperature swing absorption (TSA) using aqueous monoethanolamine (MEA) as solvent. ... -
Dynamic Process Model Validation and Control of the Amine Plant at CO2 Technology Centre Mongstad
(Journal article; Peer reviewed, 2017)This paper presents a set of steady-state and transient data for dynamic process model validation of the chemical absorption process with monoethanolamine (MEA) for post-combustion CO2 capture of exhaust gas from a natural ... -
Dynamic process modeling and simulation of the CO2 Technology Center Mongstad MEA pilot plant
(Master thesis, 2017)In recent years, CO2 capture and storage has risen as a key part of the portfolio of solutions proposed to reduce emissions of greenhouse gases from fossil power plants and heavy industry. Various CO2 capture technologies ... -
Dynamic Process Modeling of Topside Systems for Evaluating Power Consumption and Possibilities of Using Wind Power
(Peer reviewed; Journal article, 2022)Norwegian offshore wind farms may be able to supply power to offshore oil and gas platforms in the near future thanks to the expeditious development of offshore wind technology. This would result in a reduction in CO2 ... -
Dynamic process modelling of topside systems to evaluate power consumption and coupling with periodic power supply from renewables.
(Master thesis, 2022)I løpet av det siste tiåret har det vært en endring i den norske olje- og gassindustrien for å redusere klimagassutslipp ved å satse mer på grønne og miljøvennlige metoder for olje- og gassutvinning. Dette skyldes i stor ... -
Dynamic process simulation of heat recovery steam generator designed for offshore oil and gas installations
(Master thesis, 2016)In the offshore oil and gas sector combined cycle (CC) technology is a viable alternative to the traditional gas turbines and land-based power supply on both platforms and FPSOs. In 2015 gas turbines accounted alone for ... -
Dynamic process simulation of post-combustion CO2 capture process
(Master thesis, 2017)Due to the increased concern about global warming in recent years, it has been proposed that carbon capture and storage could be one of the solutions which can help reduce emissions of greenhouse gases from fossil power ... -
Dynamic properties of Stress-laminated Timber Bridges
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DYNAMIC RESPONSE ANALYSES OF A SEMI-SUB INSTALLATION VESSEL DURING THE INSTALLATION OF A WIND TURBINE ONTO A FLOATING SPAR BUOY
(Master thesis, 2019)Studien starter med en kort introduksjon til temaet marine operasjoner, med fokus på SSP teknologi og løfteoperasjoner. Det er mye informasjon om bruken av nedsenkbare plattformer i olje- og gassindustrien, men ikke så mye ... -
Dynamic response analysis of a catamaran installation vessel during the positioning of a wind turbine assembly onto a spar foundation
(Journal article; Peer reviewed, 2018)Installation of floating wind turbines is a challenging task. The time and costs are closely related to the installation method chosen. This paper investigates the performance of an efficient installation concept – a ... -
Dynamic response analysis of a catamaran wind turbine installation vessel with focus on the transportation stage
(Master thesis, 2018)The United Nations have agreed on the Sustainable Development Goals for the world where one of them is to achieve affordable and clean energy for the whole world for which wind energy would be a good option. Additionally, ...