Browsing Institutt for marin teknikk by Journals "Journal of Marine Science and Engineering"
Now showing items 1-20 of 23
-
A comparison of physical and numerical modeling of homogenous isotropic propeller blades
(Journal article; Peer reviewed, 2020)Results of the fluid-structure co-simulations that were carried out as part of the FleksProp project are presented. The FleksProp project aims to establish better design procedures that take into account the hydroelastic ... -
Arctic Vision: Using Neural Networks for Ice Object Classification, and Controlling How They Fail
(Peer reviewed; Journal article, 2020)Convolutional neural networks (CNNs) have been shown to be excellent at performing image analysis tasks in recent years. Even so, ice object classification using close-range optical images is an area where their use has ... -
A Calibration Study with CFD Methodology for Self-Propulsion Simulations at Ship Scale
(Peer reviewed; Journal article, 2023)This paper summarises the main findings from the full-scale Computational Fluid Dynamics (CFD) analyses conducted at SINTEF Ocean on the case of MV REGAL, which is one of the benchmark vessels studied in the ongoing joint ... -
Comparative Study of Potential Flow and CFD in the Assessment of Seakeeping and Added Resistance of Ships
(Peer reviewed; Journal article, 2023)The need for maritime freight transport of various goods has never been greater. Consequently, ships are designed with ever-increasing dimensions, with the emphasis, of course, on length. One of the many challenges in the ... -
Development of a Fuel Consumption Prediction Model Based on Machine Learning Using Ship In-Service Data
(Peer reviewed; Journal article, 2021)As interest in eco-friendly ships increases, methods for status monitoring and forecasting using in-service data from ships are being developed. Models for predicting the energy efficiency of a ship in real time need to ... -
Dynamic Load Effects and Power Performance of an Integrated Wind–Wave Energy System Utilizing an Optimum Torus Wave Energy Converter
(Peer reviewed; Journal article, 2022)To increase the utilization of wave and other renewable energy resources, an integrated system consisting of an offshore wind turbine and a wave energy converter (WEC) could be used to harvest the potential energy. In this ... -
Effect of modelling inhomogeneous wave conditions on structural responses of a very long floating bridge
(Peer reviewed; Journal article, 2021)Floating bridges are suitable for connecting land parcels separated by wide and deep waterbodies. However, when the span of the crossing becomes very long, the water environment exhibits inhomogeneities which introduce ... -
Free Surface Reconstruction for Phase Accurate Irregular Wave Generation
(Journal article; Peer reviewed, 2018)The experimental wave paddle signal is unknown to the numerical modellers in many cases. This makes it quite challenging to numerically reproduce the time history of free surface elevation for irregular waves. In the present ... -
How good is the stw sensor? An account from a larger shipping company
(Journal article; Peer reviewed, 2021) -
Improved VIV Response Prediction Using Adaptive Parameters and Data Clustering
(Peer reviewed; Journal article, 2020)Slender marine structures such as deep-water riser systems are continuously exposed to currents, leading to vortex-induced vibrations (VIV) of the structure. This may result in amplified drag loads and fast accumulation ... -
Integrating Software FMEA and STPA to Develop a Bayesian Network-Based Software Risk Model for Autonomous Ships
(Peer reviewed; Journal article, 2023)The autonomous shipping industry is increasingly focusing on enhancing the safety and reliability of software-based systems. Conducting a risk assessment is a requirement for demonstrating the safety equivalence of autonomous ... -
Multi-step-ahead forecasting of wave conditions based on a physics-based machine learning (PBML) model for marine operations
(Peer reviewed; Journal article, 2020)Short-term wave forecasts are essential for the execution of marine operations. In this paper, an efficient and reliable physics-based machine learning (PBML) model is proposed to realize the multi-step-ahead forecasting ... -
A Novel Data-Driven Prediction Framework for Ship Navigation Accidents in the Arctic Region
(Peer reviewed; Journal article, 2023)Arctic navigation faces numerous challenges, including uncertain ice conditions, rapid weather changes, limited communication capabilities, and lack of search and rescue infrastructure, all of which increase the risks ... -
Numerical investigation of scour beneath pipelines subjected to an oscillatory flow condition
(Peer reviewed; Journal article, 2021)The present study carries out two-dimensional numerical simulations to investigate scour beneath a single pipeline and piggyback pipelines subjected to an oscillatory flow condition at a Keulegan–Carpenter (KC) number of ... -
Numerical modelling and dynamic response analysis of curved floating bridges with a small rise-span ratio
(Peer reviewed; Journal article, 2020)As a potential option for transportation applications in coastal areas, curved floating bridges with a same small specified rise to span ratio of 0.134, supported by multiple pontoons, are investigated in this paper. Two ... -
Numerical Study of the Interaction between Level Ice and Wind Turbine Tower for Estimation of Ice Crushing Loads on Structure
(Journal article; Peer reviewed, 2019)In this paper, the interaction between level ice and wind turbine tower is simulated by the explicit nonlinear code LS-DYNA. The isotropic elasto-plastic material model is used for the level ice, in which ice crushing ... -
Optimal Actuator Placement for Real-Time Hybrid Model Testing Using Cable-Driven Parallel Robots
(Peer reviewed; Journal article, 2021)In real-time hybrid model testing, complex ocean structures are emulated by fusing numerical modelling with traditional hydrodynamic model testing. This is done by partitioning the ocean structure under consideration into ... -
Remote Operation of Marine Robotic Systems and Next-Generation Multi-Purpose Control Rooms
(Peer reviewed; Journal article, 2023)Since 2017, NTNU’s Applied Underwater Robotics Laboratory has been developing an infrastructure for remote marine/subsea operations in Trondheim Fjord. The infrastructure, named the OceanLab subsea node, allows remote ... -
State-of-the-Art Review of Vortex-Induced Motions of Floating Offshore Wind Turbine Structures
(Peer reviewed; Journal article, 2022)The motivation for this study is the fast development of floating offshore wind energy and the immature methodology and engineering practice related to predictions of vortex-induced motions (VIM). Benefiting from the oil ... -
Technical and Economic Feasibility Analysis of a Conceptual Subsea Freight Glider for CO2 Transportation
(Peer reviewed; Journal article, 2022)This study analyses the technical and economic aspects of a novel subsea freight glider (SFG). The SFG is an excellent replacement for tanker ships and submarine pipelines transporting liquefied CO2. The main aim of the ...