Blar i Department of Mechanical and Structural Engineering and Materials Science (TN-IMBM) på tittel
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CFD investigation on scour beneath different configurations of piggyback pipelines under steady current flow
(Peer reviewed; Journal article, 2022)Scour beneath piggyback pipelines laid on a sandy seabed is numerically investigated by solving two-dimensional (2D) Unsteady Reynolds-averaged Navier-Stokes (URANS) equations. The fluid flow and the sediment transport are ... -
CFD investigations of scour beneath a submarine pipeline with the effect of upward seepage
(Peer reviewed; Journal article, 2020-12)A numerical model of scour beneath subsea structures considering the effect of upward seepage in the seabed is proposed. A small seepage can cause significant changes to the hydrodynamic force on the bed surface and stability ... -
CFD Modelling of Turbulence around Offshore Structure
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)Leakages of methane from the seabed is a common problem for oil companies, and they are held responsible for leakages surrounding the platforms at sea. These leakages has to be monitored in some way, and Stinger Technology ... -
CFD simulation of an offshore air intake and exhaust system
(Master thesis, 2015-06-15)The main purpose is to investigate whether the exhaust gases from an offshore turbine can be rerouted to heat the air entering the turbine system, thus keeping air humidity concentration above acceptable levels. To ensure ... -
CFD simulation of the flow over a 2-dimensional pipe and vortex induced vibration of the pipe with 1 degree of freedom
(Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-16)The fluid that flows through a pipeline free span can generate vortex shedding around the pipe and triggers Vortex Induced Vibration (VIV). This VIV is a major source of fatigue damage due to dynamic stresses in the pipeline ... -
CFD simulations of a suspension bridge deck for different deck shapes with railings and vortex mitigating devices
(Peer reviewed; Journal article, 2019)Aerodynamic response of a single-box suspension bridge girder is investigated using CFD simulations. The importance of including railings and vortex mitigating devices such as guide vanes and a spoiler in the simulations ... -
CFD simulations of flow around the tandem cylinders close to the seabed
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)CFD is a useful tool for understanding continuum mechanics and analyzing flows, both disturbed and undisturbed. When we analyze flow around cylinders with CFD, we can get numerical results. We have the opportunity to see ... -
CFD Simulations of the Propagation of Free-Surface Waves Past Two Side-By-Side Fixed Squares with a Narrow Gap
(Peer reviewed; Journal article, 2019)Two-dimensional computational fluid dynamics (CFD) simulations are carried out to investigate the gap resonance phenomenon that occurs when free-surface waves travel past twin squares in tandem. The volume of fluid method ... -
CFD simulations of violent breaking wave impacts on a vertical wall using a two-phase compressible solver
(Peer reviewed; Journal article, 2019)Four different types of breaking wave impacts on a vertical wall are simulated using a two-dimensional two-phase Computational Fluid Dynamic (CFD) model. Air is considered as an isentropic ideal gas without solving an ... -
CFD Simulations of Vortex-Induced Vibrations of a Subsea Pipeline Near a Horizontal Plane Wall
(Masteroppgave/UIS-TN-IMBM/2018;, Master thesis, 2018-06)Subsea pipelines, when exposed to free spans, can experience vortex-induced vibrations. This phenomenon was described as a resonance condition occurring when the vortex shedding frequency and the natural frequency of a ... -
CFD Simulations on a partially submerged cylinder under regular waves using OpenFOAM
(Master thesis, 2015-06-15)In this Master Thesis, an overview of the performance and applicability of IHFoam numerical tool to offshore engineering related problems is presented. IHFoam is a recent numerical tool for wave modeling using a Computational ... -
CFD-simulations of flow over large turbine blades under extreme load conditions
(Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020-06-29)The goal of this project is to investigate the opportunity of performing CFD-analysis of flow over a large offshore wind turbine at a high angle of attack during extreme loading conditions. At a 90° angle of attack, the ... -
CFD-simulations of wave-wind interaction
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)Apart from solar energy, wind energy is the renewable energy which has the greatest potential. Offshore wind power is expected to have an annual growth of approximately 30 % in the decade to come. Even though the offshore ... -
Challenges and opportunities in tags and tag-related technical information management
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-16)The fact that many giant Norwegian oil and gas fields are in decline, and that these fields have reached their tail phase urges Oil and Gas (O&G) companies to focus on maintenance and modification projects to extend the ... -
Challenges and opportunities managing “Breenfield” Assets – A case study from Norwegian Continental Shelf
(Master thesis, 2023)This thesis examines the challenges and opportunities in managing "Breenfield" offshore energy assets during Mergers and Acquisitions in the Norwegian Continental Shelf (NCS). The study aims to analyze the dynamics of ... -
Challenges and opportunities of marine propulsion with alternative fuels
(Peer reviewed; Journal article, 2021-06)The increasingly stringent shipping emissions regulations and global decarbonisation movement have prompted the adoption of alternative fuels in the shipping industry. This review presents the performance results and ... -
Challenges and Prospects of Using Subsea Production Units on the Shelf of the Russian Federation
(Master thesis, 2021)The Master Thesis briefly presents the natural and climatic conditions of the Pechora Sea. The technologies of subsea production, the justified conditions of their use and their layout options are considered. The readiness ... -
Challenges and solution in subsea field development for the High North and Arctic
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013)Problem / Challenge Estimates indicate that approximately 25% of the world’s unexplored hydrocarbon reserves lie beneath the depths of the Arctic regions, with around 1% (1.5 billion ton of oil equivalent) ... -
Challenges and solutions for COSL's operation in the Arctic
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013)The enormous oil and gas fields located in the Arctic region, has given this area the name “Middle East No. 2”. Due to limited experience and availability of technology/facilities which can withstand severe environmental ... -
Challenges in Subsea Structures Design – Dropped Objects Analysis of Multiwell Template/manifold System
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)Nowadays, the production of oil and gas has a major importance to the stability of the world’s energy supply. Almost 80 percent of the world’s energy consumption comes from fossil fuels (oil, gas, and coals), and around ...