Browsing Publikasjoner fra CRIStin - NTNU by Journals "Ocean Engineering"
Now showing items 81-100 of 179
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Hydrodynamic testing of wind-assisted cargo ships using a cyber–physical method
(Peer reviewed; Journal article, 2021)A novel empirical method to study wind-assisted cargo ships is presented. The physical ship model, including propulsion units, interacts in real-time with a numerical sail model during free-running tests. Loads from the ... -
Hydroelastic response of a flexible spar floating wind turbine: Numerical modelling and validation
(Journal article; Peer reviewed, 2023)This study examines the hydroelastic response of a large floating wind turbine (FWT) through coupled numerical analysis. Four numerical models with different levels of complexity in the hydrodynamic and structural modelling ... -
Ice rose diagrams for probabilistic characterization of the ice drift behavior in the Beaufort Sea
(Journal article; Peer reviewed, 2022) -
Impact of simulation model fidelity and simulation method on ship operational performance evaluation in sea passage scenarios
(Journal article; Peer reviewed, 2019)In this paper, we present and investigate important factors that influence a vessels fuel consumption during operation and what model fidelity that is required to adequately capture these factors in fuel consumption ... -
An integrated approach for monitoring structural deformation of aquaculture net cages
(Peer reviewed; Journal article, 2021)The majority of present marine finfish production is conducted in flexible net cages which can deform when they are subjected to water movements generated by currents. The ability to monitor net deformation is important ... -
Integrated risk assessment for oil and gas installations in sensitive areas
(Journal article; Peer reviewed, 2018)Oil and gas installations in sensitive areas with harsh environmental conditions may require improved risk management. Intensified monitoring, assessment and mitigation of risk on a (quasi-) real time basis would advantage ... -
Intention modeling and inference for autonomous collision avoidance at sea
(Peer reviewed; Journal article, 2022)The open wording of the traffic rules of the sea, COLREGS, and the existence of unwritten rules, make it essential for an autonomous ship to understand the intentions of other ships. This article uses a dynamic Bayesian ... -
Investigating tradeoffs between performance, cost and flexibility for reconfigurable offshore ships
(Journal article, 2018)This paper investigates tradeoffs between technical performance, cost and flexibility level for reconfigurable offshore ships. An offshore ship can be configured with various types of equipment; thus, its base structure ... -
Knowledge and data in cooperative modeling: Case studies on ship trajectory prediction
(Peer reviewed; Journal article, 2022)A ship automation will be a key to the future maritime. In particular, ship dynamic models play an integral role. However, it is challenging to develop an accurate model readily. Recent studies proposed a physics-data ... -
Knowledge transfer strategy for enhancement of ship maneuvering model
(Peer reviewed; Journal article, 2023)The advancement of autonomous vehicles and concerns about ship navigation safety have resulted in a greater need for ship model quality. However, in situations where there is limited prior information or data available ... -
Large Eddy Simulations of flow around a smooth circular cylinder in a uniform current in the subcritical flow regime
(Journal article; Peer reviewed, 2014)Three-dimensional flow around a circular cylinder in a steady, uniform current at subcritical Reynolds numbers (Re) is investigated. The flow is simulated using Large Eddy Simulations (LES) with Smagorinsky subgrid scale ... -
Large-eddy simulations of the flow past a bluff-body with active flow control based on trapped vortex cells at Re = 50000
(Peer reviewed; Journal article, 2023)We investigate a novel flow control concept, which allows to govern bluff-body wake dynamics and the laminar–turbulent transition by suppressing vortex shedding and obtaining the mostly detached flow. Large-eddy simulations ... -
Long-term joint distribution of environmental conditions in a Norwegian fjord for design of floating bridges
(Journal article; Peer reviewed, 2019)A floating bridge is an attractive solution for crossing wide and deep fjords. To design a reliable and cost-effective floating bridge, it is very important to accurately evaluate the long-term environmental conditions at ... -
Making sense of speed effects on ice crushing pressure-area relationships in IACS ice-strengthening rules for ships
(Journal article; Peer reviewed, 2021)Arctic shipping fleet expansion is anticipated in the future. However, future refinements in the understanding of ice loads on larger ships are needed to achieve a better structural design with reduced steel weight. Published ... -
Maritime Shipping and Emissions: A three-layered, damage based approach
(Journal article; Peer reviewed, 2015-12-01)Policy emphasis in ship design must be shifted away from global and idealized towards regional based and realistic vessel operating conditions. The present approach to reducing shipping emissions through technical standards ... -
A meta-model for added resistance in waves
(Peer reviewed; Journal article, 2022)In this paper, we perform a comprehensive study of various semi-empirical methods using publicly accessible experimental data on added resistance in waves with different ship types and conditions. Based on the analysis ... -
Method for Real-Time Hybrid Model Testing of ocean structures: Case study on horizontal mooring systems
(Journal article; Peer reviewed, 2019)This paper presents a method for Real-Time Hybrid Model testing (ReaTHM testing) of ocean structures. ReaTHM testing is an extension to traditional hydrodynamic model-scale testing, where the system under study is partitioned ... -
Methodology for assessment of the operational limits and operability of marine operations
(Journal article; Peer reviewed, 2016)This paper deals with a general methodology for assessment of the operational limits and the operability of marine operations during the planning phase with emphasis on offshore wind turbine (OWT) installation activities. ... -
Model-free anti-swing control of complex-shaped payload with offshore floating cranes and a large number of lift wires
(Peer reviewed; Journal article, 2021)Being one of the most commonly used offshore operations, offshore lifting operations become increasingly challenging due to the gradually growing size and weight of payloads. The research on automatic control in lifting ... -
Modelling of soil-structure-interaction for flexible caissons for offshore wind turbines
(Journal article; Peer reviewed, 2018)Published foundation models and procedures for calculation of caisson foundation response typically assume a rigid caisson in deformable soil. However, recent published measurement data from a prototype suction bucket ...