Blar i NTNU Open på tittel
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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 a Remotely Operated Vehicle During Launch and Recovery
(Master thesis, 2022)Abstract will be available on 2025-06-06 -
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 operations performed in ice
(Master thesis, 2011)A two-dimensional broken ice model is implemented, including a collision detection and resolving system for ice interactions, using conservation of momentum. A simulation of the model has been done to evaluate the dynamics ... -
Dynamic Positioning System as Dynamic Energy Storage on Diesel-Electric Ships
(Journal article; Peer reviewed, 2014)A dynamic positioning (DP) system on a diesel-electric ship applies electric power to keep the positioning and heading of the ship subject to dynamic disturbances due to the winds, waves and other external forces using ... -
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 Positioning Using Model Predictive Control with Short-Term Wave Motion Prediction
(Master thesis, 2020) -
Dynamic Positioning Using Model Predictive Control With Short-Term Wave Prediction
(Peer reviewed; Journal article, 2023)Remotely operated vehicle (ROV) operations are today typically supported by large designated vessels. New emerging concepts aim to streamline ROV operations by utilizing unmanned surface vessels of a smaller size. Reduction ... -
Dynamic positioning with model predictive control
(Journal article; Peer reviewed, 2016)Marine vessels with dynamic positioning (DP) capability are typically equipped with sufficient number of thrusters to make them overactuated and with satellite navigation and other sensors to determine their position, ... -
Dynamic Pricing for Microgrids Energy Transaction in Blockchain-based Ecosystem
(Chapter, 2019)Microgrid (MG) is an efficient platform to integrate distributed energy resources in distribution networks. The operation of MG is also expected to take advantage of emerging smart grid technologies to improve operation ... -
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 ...