Browsing Institutt for marin teknikk by Journals "Ocean Engineering"
Now showing items 41-60 of 133
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An Efficient Method for Design and Powering Prediction of Fast Slender Catamarans
(Journal article; Peer reviewed, 2023)This paper presents a parameterized and mathematically defined hull shape that can be tuned to represent modern passenger fast ferries. Additionally, a resistance calculation model for high-speed slender round-bilge ... -
An Efficient Method for Unsteady Hydrofoil Simulations, based on Non-Linear Dynamic Lifting Line theory
(Journal article; Peer reviewed, 2023)This paper presents a Non-linear Dynamic Lifting Line (NDLL)-based method for analysing hydrofoil vessels in waves. The method is validated, and its utility is demonstrated in a case study. The NDLL accounts for dynamic ... -
Efficient prediction of wind and wave induced long-term extreme load effects of floating suspension bridges using artificial neural networks and support vector machines
(Journal article; Peer reviewed, 2020)Long-term extreme load effects are one of the primary concerns in the design of civil and offshore structures. Such load effects can be evaluated using the accurate but computationally demanding full long-term method or ... -
Evaluation of speed loss in bulk carriers with actual data from rough sea voyages
(Journal article; Peer reviewed, 2019)The evaluation of speed loss is the most important studies in the optimal ship routing. However, the mode of speed loss during rough sea voyages is complicated because of the involvement of the human factor. A speed loss ... -
Experimental and numerical analysis of wind field effects on the dynamic responses of the 10 MW SPIC floating wind turbine concept
(Journal article; Peer reviewed, 2022) -
Experimental and numerical study of a two-body heaving wave energy converter with different power take-off models
(Journal article; Peer reviewed, 2021)Wave energy is one of the most difficult energies to be captured among marine renewables. With the technical progress, wave energy converters (WECs) are being tested in relatively deeper waters, which makes floating concepts ... -
Experimental and numerically obtained low-frequency radiation characteristics of the OC5-DeepCwind semisubmersible
(Peer reviewed; Journal article, 2021)Added mass and damping play a significant role in accurate prediction of floating wind turbine (FWT) motions, especially near the resonance frequencies. This paper investigates the still-water hydrodynamic characteristics ... -
Experimental investigation of a closed vertical cylinder-shaped fish cage in waves
(Peer reviewed; Journal article, 2021)Wave-induced response of a closed floating fish cage consisting of a vertical circular cylinder with an external toroidal floater is studied theoretically and experimentally. A main purpose was to investigate how the ... -
Experimental investigation of the hydro-elastic response of a spar-type floating offshore wind turbine
(Journal article; Peer reviewed, 2022)As the size of floating wind turbines continues to increase, floating platforms reach dimensions that make their elastic and hydro-elastic behaviour significant. Several works in connection with the numerical modelling of ... -
Experimental results of a multimode monopile offshore wind turbine support structure subjected to steep and breaking irregular waves
(Journal article; Peer reviewed, 2017)We present experimental data from MARIN on a bottom-fixed offshore wind turbine mounted on a monopile in intermediate water depth subjected to severe irregular wave conditions. Two models are analysed: the first model is ... -
Experimental study of drilling riser and wellhead force by small scale testing
(Peer reviewed; Journal article, 2022)Small-scale model tests of a drilling riser were conducted, aiming at a better understanding of the mechanical transfer of forces from the drilling riser to the wellhead. The tests were conducted in a water tank with ... -
Fatigue reliability of mooring chains, including mean load and corrosion effects
(Peer reviewed; Journal article, 2022)A reliability formulation for mooring chain fatigue is developed, including the effects of mean load and degradation due to corrosion. They are included by starting from a S-N model with parameterized dependence to the ... -
Fault-tolerant Position-Mooring Control for Offshore Vessels
(Journal article; Peer reviewed, 2018)Fault-tolerance is crucial to maintain safety in offshore operations. The objective of this paper is to show how systematic analysis and design of fault-tolerance is conducted for a complex automation system, exemplified ... -
Finite element cable-model for Remotely Operated Vehicles (ROVs) by application of beam theory
(Journal article, 2018)Increasing autonomy, efficiency and safety for Remotely Operated Vehicles (ROVs) is crucial for future subsea operations and requires accurate models for optimal control, operations and design. This involves precise modeling ... -
Frequency domain modelling of a coupled system of floating structure and mooring Lines: An application to a wave energy converter
(Peer reviewed; Journal article, 2021)Floating structures for single offshore renewable energy devices, i.e. wave energy converters, tend to be significantly smaller than those of the traditional offshore industry and the interaction between floater motions ... -
Globally Exponentially Stable Filters for Underwater Position Estimation Using an Array of Hydroacoustic Transducers on the Vehicle and A Single Transponder
(Journal article; Peer reviewed, 2018)This paper presents two novel globally exponentially stable position estimators using hydroacoustic measurements from a single transponder to several transceivers on the vehicle. A comparison study of these and several ... -
High reliability management and control operator risks in autonomous marine systems and operations
(Journal article; Peer reviewed, 2019)This paper's objective is to analyze the main real-time risks in operation of autonomous marine systems, which follow from various levels of autonomy (LoA). High reliability management (HRM) is an established framework for ... -
Hybrid causal logic model for estimating the probability of an icebreaker–ship collision in an ice channel during an escort operation along the Northeast Passage
(Peer reviewed; Journal article, 2023)Under severe Arctic ice conditions, escort operations are the most efficient methods for facilitating shipping. Nevertheless, escort operations are among the most dangerous operations, as they may result in icebreaker–ship ... -
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 ...