Blar i Institutt for marin teknikk på dokumenttype "Chapter"
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Achieving Inherent Safety From Inherent Hazard and Risk Factors
(Chapter, 2021)Inherent safety is considered the best approach to risk reduction. Academia and industry personnel have studied this topic for a long time. However, many misconceptions and lack of clarity still exist in the industry. Also, ... -
Active Load Mitigation to Counter the Fatigue Damage Contributions From Unavailability in Offshore Wind Turbines
(Chapter, 2018)The offshore wind industry continues to grow, but there is still a need for more economical designs. As unavailability conditions can be critical for the fatigue damage in support structures, design standards use conservative ... -
Adaptive Wave Filtering for Dynamic Positioning of Marine Vessels Using Maximum Likelihood Identification: Theory and Experiments
(Chapter, 2016)This paper addresses a filtering problem that arises in the design of dynamic positioning systems for ships and offshore rigs subjected to the influence of sea waves. The dynamic model of the vessel captures explicitly the ... -
Agree – Disagree: Comparing Traffic Limitations in the Kara Sea
(Chapter, 2021)This study investigates variability of ships’ operational limitations for ice conditions in view of national rules and international recommendations (the Rules for Navigation in the Water Area of the Northern Sea Route and ... -
AMOS DP Research Cruise 2016: Academic full-scale testing of experimental dynamic positioning control algorithms onboard R/V Gunnerus
(Chapter; Peer reviewed, 2017)In order to validate relevant dynamic positioning (DP) control algorithms in a realistic environment, a full-scale DP test campaign, the AMOS DP Research Cruise 2016 (ADPRC’16), was organized in a collaboration between the ... -
An Analytical Model of Floating Offshore Wind Turbine Blades Considering Bending-Torsion Coupling Effect
(Chapter, 2018)In this paper, an analytical model is proposed to describe the nonlinear vibration of blades on floating offshore wind turbine (FOWT). The bending-torsion coupling equations are derived based on Hamilton’s principle. ... -
An Analytical Model of the Effect of Internal Density Waves in Risers Subjected to Vortex Shedding
(Chapter, 2018)Risers used for deep sea mining will be subjected to vortex-induced vibrations (VIV) caused by ocean currents. The internal flow, consisting of e.g. mineral ore and water, will have a non-uniform density. This traveling ... -
An approach towards the design of robust arctic maritime transport systems
(Maritime-Port Technology and Development;, Book; Chapter, 2014)This paper describes a simulation-based approach towards the design of robust arctic maritime transport systems that are adaptable to uncertain future ice conditions. It makes it possible to simulate the performance of ... -
An Experimental and Numerical Study of Added Mass and Damping for Side by Side Plates in Oscillating Flow
(Chapter, 2019)Forced harmonic oscillations of seven configurations consisting of horizontal side by side plate elements are performed experimentally and numerically. The configurations are oscillated in vertical direction and represent ... -
An ice-tethered buoy for fish and plankton research
(Chapter, 2018)I.In this paper the authors present bio-acoustical icetethered platform for optical, physical and ecological sensors (POPE), i.e. an ice-tethered buoy, equipped with an AZFP scientific echosounder for fish and plankton ... -
An Overview of Analysis and Design of Offshore Wind Turbines
(Chapter, 2016)Offshore wind provides an important source of renewable energy and new opportunities for marine technology. Various fixed and floating concepts have been proposed for offshore wind application. Offshore wind turbines (OWTs) ... -
Analysis of a Hybrid Mooring System Concept for a Semi-Submersible Wind Turbine in Intermediate Water Depth Under Operational, Extreme, and Yaw Error Conditions
(Chapter, 2022)A hybrid mooring system consisting of catenary chains and a series of clump weights was designed for the intermediate water depth, for a floating semi-submersible wind turbine. The use of multiple clump weights in the ... -
Analysis of Dynamic Positioning System Accidents and Incidents with Emphasis on Root Causes and Barrier Failures
(Chapter, 2017)The accidental statistics from 2003 to 2013 revealed that the frequency of floating production storage and offloadingshuttle tanker (FPSO-ST) collision risk was significantly above the cut-off limit. There is a need for ... -
Analysis of Open-Source CFD Tools for Simulating Complex Hydrodynamic Problems
(Chapter, 2020)OpenFOAM (OF) represents an attractive and widely used open-source environment for simulating complex hydrodynamic scenarios with several implemented numerical methods and wide variety of problems it can be applied to. For ... -
Analysis of Propulsion Performance of KVLCC2 in Waves
(Chapter, 2015)In this paper, we have analyzed the propulsion performance of KVLCC2 in presence of waves. Different factors affecting the propulsion performance have been studied. Analysis of the extent of change in wake quality and its ... -
Applicability of current remotely operated vehicle standards and guidelines to autonomous subsea IMR operations
(Chapter, 2015)This paper employs a combination of literature review and case study methodology to assess the gap between current remotely operated vehicle (ROV) standards and future autonomous IMR operation requirements. With advent of ... -
Application of a PI-controller to a 25 MW Floating Wind Turbine
(Chapter, 2022)Proportional-integral controllers are extensively applied to the pitch control of wind turbines. Despite its simplicity, this control strategy achieves good performance in onshore applications. However, the application of ... -
Application of Continuous Integration in Decision Support and Integrity Management Systems of Offshore Structures
(Chapter, 2019)Simulation-based decision support systems play an important role in safe operation of offshore floating platforms. These systems, which consist of digital models, simulators, and analysis procedures, are subject to continuous ... -
Application of FhSim for the Analysis of Environmental Loads on a Complete Fish-Farm System
(Chapter, 2019)Fish farming at exposed locations requires robust and reliable structures that facilitate sustainable, safe and efficient production. There is also a need for proper numerical tools and analysis methods that can be utilised ... -
Application of fuzzy logic for safe autonomous subsea IMR operations
(Chapter, 2015)Numerous technical and knowledge gaps pose challenges towards implementation of autonomous subsea intervention, maintenance, and repair operations. One such gap is related to development of methods for ensuring subsea asset ...