Blar i Institutt for marin teknikk på tittel
Viser treff 3368-3387 av 3472
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Validation of vessel seakeeping model tuning algorithm based on measurements at model scale
(Peer reviewed; Journal article, 2021)Wave-induced vessel motion prediction plays a critical role in ensuring safe marine operations. The operational limiting criteria can usually be calculated by applying presumed linearized vessel motion transfer functions ... -
The Value of High-Fidelity Numerical Simulations of Ice-Ship and Ice-Structure Interaction in Arctic Design with Informed Decisionmaking
(Chapter, 2022)Long-term changes in the climate lead to an increase of activities in the Arctic. Ships and structures operating in Arctic waters may encounter sea ice and must be designed to withstand the loads resulting from ice-ship ... -
Value of information-based inspection planning for offshore structures
(Chapter, 2017)Asset integrity and management is an important part of the oil and gas industry especially for existing offshore structures. With declining oil price, the production rate is an important factor to be maintained that makes ... -
A value of prediction model to estimate optimal response time to threats for accident prevention
(Peer reviewed; Journal article, 2022)This paper presents a novel value of (imperfect) prediction (VoP) model to estimate optimal response time to a threat that may result in an accident. The proposed VoP model is based on information value theory and considers ... -
Valuing Flexibility in Ship Design - A Real Options Approach
(Master thesis, 2015)This thesis is a Real Options (RO) approach to valuing flexibility in ship design. The overall object is to find the value of owning a Multipurpose Offshore Construction Vessel (MOCV) by applying the Black-Scholes Option ... -
Variable Inlet and Exhaust Valve Operation in Medium Speed Marine Diesel Engines
(Master thesis, 2010)This thesis was successfully completed through five main parts. First a lingering issue of great importance was dealt with in order to start the use of the provided simulation model. This task was imperative to accurate ... -
Variational formulations, model comparisons and numerical methods for Euler–Bernoulli micro- and nano-beam models
(Journal article; Peer reviewed, 2017)As a first step, variational formulations and governing equations with boundary conditions are derived for a pair of Euler–Bernoulli beam bending models following a simplified version of Mindlin’s strain gradient elasticity ... -
Vent Valve Thrust Force for Surface Effect Ships
(Journal article; Peer reviewed, 2019)The Surface Effect Ship (SES) holds promise as a viable and appealing alternative for transferring crew to offshore wind farms and oil platforms due to its superior seakeeping capability, high comfort and speed. A SES is ... -
Verdens plastproblem - går det på helsa løs?
(Research report, 2024) -
Verification and Examination Management of Complex Systems
(Journal article; Peer reviewed, 2014)As ship systems become more complex, with an increasing number of safety-critical functions, many interconnected subsystems, tight integration to other systems, and a large amount of potential failure modes, several industry ... -
Verification of a collision avoidance algorithm in open sea and full visibility using fuzzy logic
(Master thesis, 2021)Autonome overflatefartøy er er et populært emne som det er blitt gjort mye forskning på. Ved bruk av autonome overflatefartøy kan man redusere kostnader, øke sikkerhet, pålitelighet, effektivitet og oppnå et mer bærekraftig ... -
Verification of collision avoidance algorithms in open sea and full visibility using fuzzy logic
(Journal article; Peer reviewed, 2023) -
Verification of Collision Avoidance Utilizing Data-driven Fuzzy Logic
(Master thesis, 2023)In all the hazardous accidents at sea, ship collision is always the most frequent one. It has been paid great attention, and International Regu- lations for Preventing Collisions at Sea (COLREG) are being complied with. ... -
Verification of Numerical Offshore Wind Turbine Models Based on Full Scale Alpha Ventus Data within OC5 Phase III
(Chapter, 2018)The main objective of the Offshore Code Comparison Collaboration Continuation, with Correlation (OC5) project, is validation of aero-hydro-servo-elastic simulation tools for offshore wind turbines (OWTs) through comparison ... -
Verifying and Validation of a Manoeuvring Model for NTNU's Research Vessel R/V Gunnerus
(Master thesis, 2012)MARINTEK's ship motion simulation program SIMAN (ShipX manoeuvring module) is used to develop a ship motion model for NTNU's research vessel R/V Gunnerus. SIMAN uses a 3-DOF linear mathematical model to describe the vessel's ... -
Vertical Wave Loads and Response of a Floating Fish Farm with Circular Collar
(Master thesis, 2011)In this master thesis the vertical wave loads and vertical responses of the floating collar of a circular fish farm have been investigated. The response has been investigated for a collar without the presence of mooring ... -
Vessel hydrodynamic model tuning by Discrete Bayesian updating using simulated onboard sensor data
(Peer reviewed; Journal article, 2021)Vessel and wave hydrodynamics are fundamental for vessel motion prediction. Improving hydrodynamic model accuracy without compromising computational efficiency has always been of high interest for safe and cost-effective ... -
Vessel Operations in Exposed Aquaculture: Achieving safe and efficient operation of vessel fleets in fish farm systems experiencing challenging metocean conditions
(Doctoral theses at NTNU;2023:42, Doctoral thesis, 2023)Fartøysoperasjoner i eksponert havbruk Eksponert havbruk vil kreve at servicebåter brukt i havbruksnæringa er tilpasset mer krevende sjøkondisjoner enn i skjermede lokaliteter, slik at evne til å utføre marine operasjoner ... -
Vibration-Based Condition Monitoring of Drivetrains in Large Offshore Wind Turbines in a Digital Twin Perspective
(Doctoral theses at NTNU;2021:109, Doctoral thesis, 2021)According to EU 2050 plan, offshore wind farms based on large floating wind turbines are considered as a main source of power supply in the coming future. Among the turbine systems, drivetrain contributes significantly in ... -
Vibration-based Fault Detection and Condition Monitoring of Mechanical Systems in Wind Turbines
(Master thesis, 2018)An increased energy demand of the future, combined with problems related to climate change and emissions of greenhouse gases, has made solutions for reliable and efficient renewable energy producers attractive. Wind turbines ...