Browsing Institutt for marin teknikk by Title
Now showing items 1858-1877 of 3472
-
Large Eddy Simulations of Flow Past Two Pipelines in Tandem in Close Proximity to the Seabed
(Chapter, 2017)Three-dimensional Large Eddy Simulations (LES) with Smagorinsky subgrid scale model have been performed for the flow past two free-spanning marine pipelines in tandem placed in the vicinity of a plane wall at a very small ... -
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 ... -
Large floating structure with free-floating, self-stabilizing tanks for hydrocarbon storage
(Journal article; Peer reviewed, 2019)Hydrocarbon is a major source of energy for sustainable development. Storage of hydrocarbon products, however, requires a significant amount of land space to land-scarce countries like Singapore. This paper presents an ... -
Large inelastic deformation resistance of stiffened panels subjected to lateral loading
(Journal article, 2018)This paper presents a simplified formulation for the assessment of large deformation resistance of stiffened panels subjected to lateral loading. The method is based on rigid plastic material assumptions and the use of ... -
Large-eddy simulations of cross-flow around ship sections
(Doctoral thesis at NTNU;2016:111, Doctoral thesis, 2016)This thesis reports numerical simulations of three-dimensional (3D) unsteady cross flow over two ship sections located side-by-side. The ship sections have different breadth and draft conditions which represent typical ... -
Lateral response controlfor large-diameter monopile offshore wind turbines
(Master thesis, 2020)Offshore vindturbiner er regulert av et kontrollsystem med det overordnede målet å optimalisere for energiproduksjon. Dette systemet kontrollerer generatorens dreiemoment og rotorblad-pitch med hensyn til den innkommende ... -
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 ... -
Launch and recovery of ROV: Investigation of operational limit from DNV Recommended Practices and time domain simulations in SIMO
(Master thesis, 2010)Offshore contractors seek to operate their remotely operated vehicles for the widest range of sea conditions where particularly launch and recovery through splash zone are critical phases in the offshore operation. The ... -
Leading Edge Erosion of Wind Turbine Blades: Effects of Environmental Parameters on Impact Velocities and Erosion Damage Rate
(Chapter, 2020)Leading edge erosion (LEE) of a wind turbine blade (WTB) is a complex phenomenon that contributes to high operation and maintenance costs. The impact between rain droplets and rotating blades exerts cyclic fatigue stresses ... -
Learning excursion sets of vector-valued Gaussian random fields for autonomous ocean sampling
(Journal article, 2021)Improving and optimizing oceanographic sampling is a crucial task for marine science and maritime resource management. Faced with limited resources in understanding processes in the water column, the combination of statistics ... -
Learning from failures in cruise ship industry: The blackout of Viking Sky in Hustadvika, Norway
(Peer reviewed; Journal article, 2021)This article brings to attention learning from the failure - blackout, loss of propulsion and near grounding - of Viking Sky cruise ship which occurred in Hustadvika, Norway, in March 2019. Failures and accidents in the ... -
Learning from failures: Accidents of marine structures on Norwegian continental shelf over 40 years time period
(Peer reviewed; Journal article, 2020)This paper investigates accidents, major accidents and disasters which occurred on the Norwegian Continental Shelf (NCS) over a period of more than 40 years time (1972-2013). An accident investigation based on the system ... -
Learning from non-failure of Onagawa nuclear power station: an accident investigation over its life cycle
(Peer reviewed; Journal article, 2020)This article investigates the successful survival of the Onagawa nuclear power station during and after the 2011 Tohoku earthquake and tsunami. As a research method, a system approach investigation and analysis— CAST (Causal ... -
LES of Flow Around Tandem Cylinders Close to a Horizontal Wall
(Chapter, 2015)This study focuses on the numerical simulations of the flow around tandem cylinders placed in the vicinity of a rigid, horizontal, plane wall. The cylinders are immersed close to a plane wall in a steady current with a ... -
Lessons from aviation: Applying threat and error management framework to cases from the offshore drilling industry
(Chapter, 2014)After the Macondo blowout in the Gulf of Mexico in 2010, several actions have been proposed to enhance safety in drilling operations. Among the suggested safety measures is the application of aviation style teamwork training ... -
Lessons learned from the trial operation of an autonomous urban passenger ferry
(Peer reviewed; Journal article, 2024)Cities worldwide consider autonomous passenger ferries a sustainable way of transporting passengers across and along waterways. Since 2016, a university-led effort to develop autonomous urban passenger ferry prototypes has ... -
LFCS Review report - Environmental conditions Wind, wave and current in coastal areas
(Research report, 2018) -
LFCS Review report – Environmental loads Methods for the estimation of loads on large floating bridges
(Research report, 2018)The document presents a review of state-of-the-art methods to calculate environmental loads on large floating bridges. It is a deliverable from WP2 of the Design and verification of Large Floating Costal Structures (LFCS) ... -
Life Cycle and Risk Assessment of Implementation of Rotor Sails on Chemical Tanker
(Master thesis, 2023)Denne masteroppgaven undersøker implementering av rotorseil som fremdriftshjelpemiddel på skip ved hjelp av livssyklus- og risikovurderinger. Hovedfokuset er implementering på eksisterende skip, og ikke på skip som er ... -
Life Cycle and Risk Assessment of Implementation of Rotor Sails on Chemical Tanker
(Master thesis, 2023)Denne masteroppgaven undersøker implementering av rotorseil som fremdriftshjelpemiddel på skip ved hjelp av livssyklus- og risikovurderinger. Hovedfokuset er implementering på eksisterende skip, og ikke på skip som er ...