Browsing Institutt for marin teknikk by Title
Now showing items 1599-1618 of 3610
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High-level demonstration of holistic design and optimisation process of Offshore Support Vessel
(Chapter, 2018)Design of highly complex vessels involves a multitude of disciplines designing different modules and units of the vessel using different tools and methods requiring specialist competence in specific areas. The vessel may ... -
High-Pressure Direct-Injection Dual Fuel Engine: Evaluation for performance and emission potential by injector modeling and simulation
(Master thesis, 2020)Natural gas is a promising alternative fuel for marine engines that must comply with strict international emissions regulations. The current standard for these engines is the low-pressure dual fuel arrangement usually ... -
Higher harmonic wave loads on a vertical cylinder in finite water depth
(Journal article, 2017)The theory by Faltinsen et al. (1995) (FNV) for calculation of higher-order wave loads in deep water, on a vertical, free-surface piercing, circular, bottom-mounted, non-moving cylinder, based on potential flow of an ... -
Higher Order Frequency Component in VIV
(Master thesis, 2014)There are still quite a lot unknown and unexplainable territories in hydrodynamic field. VIV is one of them. In today s industry world, existence of uncertainty in VIV prediction program attracts much attention.In this ... -
Higher Order Loads from Steep Waves on Drilling Risers
(Master thesis, 2013)Drilling operations are conducted in increasingly harsher environments as the easily accessible oil fields are growing scarce. Marine drilling risers are exposed to large hydrodynamic forces in the splash zone. Higher order ... -
Higher Order Spectral method for wave scenarios with nonlinear and dispersive effects
(Master thesis, 2018)For ocean application, a High Order Spectral (HOS) method is studied. Different from most application of HOS method which use initial value problem to investigate the spectrum evolution, embedded wave generation is implemented ... -
A high‐order harmonic polynomial method for solving the Laplace equation with complex boundaries and its application to free‐surface flows. Part I: Two‐dimensional cases
(Peer reviewed; Journal article, 2020)A high‐order harmonic polynomial method (HPM) is developed for solving the Laplace equation with complex boundaries. The “irregular cell” is proposed for the accurate discretization of the Laplace equation, where it is ... -
How Free Swimming Fosters the Locomotion of a Purely Oscillating Fish-like Body
(Journal article, 2023)The recoil motions in free swimming, given by lateral and angular rigid motions due to the interaction with the surrounding water, are of great importance for a correct evaluation of both the forward locomotion speed and ... -
How good is the stw sensor? An account from a larger shipping company
(Journal article; Peer reviewed, 2021) -
How Lamina Age Influence Photosynthetic Response to Light Variations in Saccharina latissima
(Master thesis, 2014)Fotosyntetisk rate, målt på grunnlag av in vivo klorofyll a fluorescens, som en funksjon av økende lamina alder ble undersøkt i Saccharina latissima fra Trondheimfjorden, Norge i vinter, sommer og høst 2013. Sesongens ... -
How Loads Interact? A Numerical Investigation of Aluminum Stiffened Panels Under Bi-Axial and Lateral Loads
(Chapter, 2023)Due to low weight, aluminum alloys are commonly used to build ferries, working boats and high-speed ships. The hull of such vessels can be designed as catamaran and trimaran for favorable hydrodynamical behavior and ... -
How safe were vessels during research cruises in Arctic in 2007-2019? Linking the Ice Watch Data and the Polar Operational Limits Assessment Risk Index System
(Chapter, 2021)The present work analyzes cruise data from the Ice Watch database and applies the IMO's Polar Operational Limit Assessment Risk Indexing System (POLARIS) with ice observations. The results of this study showed that on ... -
How vortex dynamics affects the structural load in step cylinder flow
(Journal article; Peer reviewed, 2023)The vortex dynamics and the structural load in a step cylinder (consisting of a small, d, and a large, D, cylinder) flow are investigated numerically at Reynolds number (ReD) 150 for diameter ratios D/d=2.0,2.4 and 2.8. ... -
Hull Dimensions of a Semi-Submersible Rig: A Parametric Optimization Approach
(Master thesis, 2013)Semi-submersible rigs are utilized to perform drilling, production and intervention operations in the oil and gas industry. The design of the rigs is a complex task which today is highly dependent on manual iteration and ... -
Hull Monitoring and Assessment of Hatch Corners and Hatch Opening Distortion
(Master thesis, 2015)Torsion is highly important for large container carriers. In order to maximize the container capacity, a large deck area is essential, which often leads to a big bow are. To simplify loading and ooading, each cargo hold ... -
Human and Organizational Factors in Vessel-Platform Collision Risk on the Norwegian Continental Shelf
(Master thesis, 2015)The accident potential of a vessel colliding with an offshore platform is significant, concerning both human lives, the environment and financial loss. To quantify and model the risk of collisions in an accurate manner has ... -
Human factor influences on supervisory control of remotely operated and autonomous vessels
(Journal article; Peer reviewed, 2024)Autonomous ships require remote supervision from a human operator to ensure safety. However, there are knowledge gaps concerning human factor influences on remote supervisory control. We investigate the influence of five ... -
Human Factors Evaluation in Ship Design: A Case Study on Offshore Supply Vessels in the Norwegian Sea, Part I: Theoretical Background and Technical Constructs
(Journal article, 2016)Surveys were conducted in the Norwegian Sea to evaluate the existing human factors standards and their implementations on two different offshore supply vessels designs. The results are reported in two parts. This paper ... -
Human Factors in Ship Design and Operation: A Preliminary Survey of the Theoretical Construct
(Journal article, 2016)This technical note presents an analysis of the underlying factors of human factors in ship design based on questionnaires distributed on two offshore supply vessels operating in the Norwegian Sea. The concept of human ... -
Human Factors in Ship Design and Operation: Experiential Learning
(Doctoral thesis at NTNU;2016:11, Doctoral thesis, 2016)Human error and other human related factors have long been identified as the main cause of accidents at sea. Inadequate design has been suggested as a significant reason triggering human actions. In this research, human ...