Browsing Institutt for marin teknikk by Document Types "Chapter"
Now showing items 61-80 of 379
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Code-to-Code Verification of End-Anchored Floating Bridge Global Analysis
(Chapter, 2018)A code-to-code comparison of the dynamic characteristics of an end-anchored floating pontoon bridge is presented for two commercial software commonly used in the offshore industry, i.e. SIMO-RIFLEX and ORCAFLEX. Furthermore, ... -
Combining design and strategy in offshore shipping
(Chapter, 2018)This paper presents the design-strategy planning (DSP) procedure as a framework that integrates life cycle strategies of a ship into the early stages of the design process. We argue that understanding strategic, tactical, ... -
Committee V.1: Accidental Limit States
(Chapter, 2023)Ships and offshore structures may be subject to accidental actions during their operation. Design for preventing or minimizing the effects of accidents is termed accidental limit states (ALS) design and is characterized ... -
Committee V.4: Offshore Renewable Energy
(Chapter, 2018)Concern for load analysis and structural design of offshore renewable energy devices. Attention shall be given to the interaction between the load and structural response of fixed and floating installations taking due ... -
Comparative study of energy efficiency and cost optimization in low-emission marine power systems with alternative fuels
(Chapter, 2021)Marine hybrid power systems fed by so-called "alternative fuels" are key enablers to reducing greenhouse gas emissions from ship propulsion and reaching international targets, particularly for large vessels. In this paper, ... -
Comparative Study of Lifting Operations of Offshore Wind Turbine Monopile and Jacket Substructures Considering Vessel Shielding Effects
(Chapter, 2015)In this paper, the shielding effects from an installation vessel during lifting operations are investigated. The study compared the lifting operations of two commonly used offshore wind turbine substructures: the monopile ... -
A Comparative Study of the Energy Efficiency of Hydrofoil Vessels and Slender Catamarans
(Chapter, 2023)The transition to zero-emission energy systems introduces new challenges in fast ferry design, particularly in relation to the increased weight and cost associated with stored and consumed energy. Hydrofoils may address ... -
Comparison and Validation of Hydrodynamic Load Models for a Semisubmersible Floating Wind Turbine
(Chapter, 2018)In global aero-hydro-servo-elastic analyses of floating wind turbines (FWTs), the hydrodynamic loads are usually found from potential flow theory and applied in a single point of a rigid hull. When the hull is relatively ... -
Comparison of Experimental Data of a Moored Multibody Wave Energy Device With a Hybrid CFD and BIEM Numerical Analysis Framework
(Chapter; Peer reviewed, 2015)In the present paper, a hybrid Computational Fluid Dynamics (CFD) and Boundary Integral Element Method (BIEM) framework is developed in order to study the response of a moored Multibody wave Energy Device (MED) to a ... -
Comparison of Fuel Consumption on a Hybrid Marine Power Plant With Low-Power Versus High-Power Engines
(Chapter, 2018)In this paper, we are comparing fuel consumption on a case study hybrid marine power plant with diesel gensets and batteries. Optimization methods are used to find an optimal operating point for the gensets, under different ... -
Comparison of Hazardous Scenarios for Different Ship Autonomy Types using Systems-Theoretic Process Analysis
(Chapter, 2019)The area of autonomous and remotely operated ships is developing fast but is still an immature field where new ideas and novel technology solutions are being introduced. As part of these efforts, the Norwegian Forum for ... -
Comparison of LES and DNS for the flow past a circular cylinder with fairings
(Chapter; Peer reviewed, 2015) -
Comparison of Wave-induced Response of a TLP Wind Turbine Obtained by CFD Method and Potential Theory
(Chapter, 2014)A computational fluid dynamics (CFD) method has been verified and compared with potential theory approach to assess the hydrodynamic loads on a tension leg platform wind turbine (TLPWT). Floating wind turbines have the ... -
Complementarity of Data-Driven and Simulation Modeling Based on the Power Plant Model of the Offshore Vessel
(Chapter; Peer reviewed, 2017)Nowadays, there are more ships equipped with on-board monitoring systems and vessels with many sensors are becoming a standard. Available measurements can be employed for system optimization which play an important role ... -
Component-Based Modeling and Simulation of Nonlinear Drill-String Dynamics
(Chapter, 2019)In this paper, we present a dynamic model for a generic drill-string. The model is developed with the intention for component-based simulation with coupling to external subsystems. The performance of the drill-string is ... -
Concept of the Specific Energy of the Mechanical Destruction of Ice versus the Ice Pressure-Area Relationship: Review and Discussion
(Chapter, 2018)For a structure-ice interaction process, a continuous record of force versus time can be converted to an ice pressure–area curve, or it can be used to find the specific energy of the mechanical destruction of ice (crushing ... -
Condition Monitoring of Ship Propulsion Systems: State-of-the-Art, Development Trend and Role of Digital Twin
(Chapter, 2021)This paper describes the current implementations and development trends of condition monitoring as it pertains to ship propulsion systems. In terms of total incidents in the shipping industry in the last five years, failures ... -
Controller Analysis in Real-Time Hybrid Model Testing of an Offshore Floating System
(Chapter, 2018)This paper presents an experimental study using Real-Time Hybrid Model (ReaTHM) testing of a moored floating cylindrical buoy, conducted in a wave basin. ReaTHM testing is a method for studying the dynamics of marine ... -
A Coupled Harmonic Polynomial Cell and Higher-Order Spectral Method for Nonlinear Wave Propagation
(Chapter, 2020)The present work deals with wave generation in fully nonlinear numerical wave tanks (NWT). As an alternative to modelling a moving (physical) wavemaker, a two-dimensional (2D) potential-flow NWT is coupled with an external ... -
Crane Rig: An Experimental Setup for Developing and Verifying New Control Methods for Marine Crane Operations
(Chapter; Peer reviewed, 2017)This paper will present the derivation of dynamic equations describing the motion of a knuckleboom crane for marine vessels. The dynamics will be derived using Lagrange’s equation, the theory of virtual work and generalized ...