Browsing Institutt for marin teknikk by Title
Now showing items 2678-2697 of 3421
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Resonant three-dimensional nonlinear sloshing in a square base basin. Part 5. Three-dimensional non-parametric tank forcing
(Peer reviewed; Journal article, 2020)Assuming an inviscid incompressible liquid (with irrotational flows) partly filling a square base tank, which performs a small-amplitude sway/surge/pitch/roll periodic motion whose frequency is close to the lowest natural ... -
Resonant three-dimensional nonlinear sloshing in a square-base basin. Part 4. Oblique forcing and linear viscous damping
(Journal article; Peer reviewed, 2017)Faltinsen et al. (J. Fluid Mech., vol. 487, 2003, pp. 1–42) (henceforth, Part 1) examined an undamped nonlinear resonant steady-state sloshing in a square-base tank by developing an approximate (asymptotic) Narimanov–Moiseev-type ... -
Response Amplitude Operator Estimation and Wave Modeling Sensitivity
(Master thesis, 2021)Informasjon om sjøtilstanden og Respons Amplitude Operator (RAO) er viktig for å studere bevegelsene til flytende strukturer. Responsprediksjoner i marine operasjoner er ofte avhengige av bølgespektrummodeller basert på ... -
Response analysis and comparison of a spar-type floating offshore wind turbine and an onshore wind turbine under blade pitch controller faults
(Journal article; Peer reviewed, 2016)This paper analyses the effects of three pitch controller faults on the responses of an onshore wind turbine and a spar-type offshore floating wind turbine. These faults include: a stuck blade pitch actuator, a fixed value ... -
Response analysis and comparison with laboratory test results for floating bridge section model
(Master thesis, 2021) -
Response analysis of a nonstationary lowering operation for an offshore wind turbine monopile substructure
(Journal article; Peer reviewed, 2015)This study addresses numerical modeling and time-domain simulations of the lowering operation for installation of an offshore wind turbine monopile (MP) with a diameter of 5.7 m and examines the nonstationary dynamic ... -
Response Analysis of Jacket Structure During Loadout Phase
(Master thesis, 2013)The purpose with this report is to verify that the Edvard Grieg jacket structure has sufficient strength to withstand the loads imposed during the load out operation at Kværner Verdal.The structural analysis has been ... -
Response Analysis of the Combined Wind/Wave Εnergy Concept SFC in Harsh Environmental Conditions
(Chapter, 2015)In this paper a combined concept involving a semi-submersible type FWT and three rotating flap WECs is considered and its structural response is examined for harsh environmental conditions. The examined combined concept ... -
Response and Structural Analysis of a Flap-type Wave Energy Converter in a Combined Wind and Wave Concept
(Master thesis, 2014)In this thesis, the novel combined wind turbine and wave energy device, named Semi-submersible Flap Combination (SFC), is studied in terms of supporting arm strength of Wave Energy Converters (WECs) and produced power by ... -
Response Calculations of Semi-Submersible Column Exposed to Slamming Loads
(Master thesis, 2016)Slamming is a highly non-linear phenomena arising from interaction between fluid and structure. A slamming load is characterized by high pressure peaks localized to a limited part of a structure, with short time duration. ... -
Response of Flexible Risers in Bend Stiffener Area
(Master thesis, 2011)Flexible risers is a vital part of a floating production system (FPS). In order to predict the riser life time, many procedure may be applied. In this thesis it is assumed that the pipe could be represented with help of ... -
Response of Monopile Wind Turbines to Higher Order Wave Loads
(Doctoral theses at NTNU;2019:258, Doctoral thesis, 2019)Monopile bottom-fixed offshore wind turbines have been in operation for around 30 years, and more are being planned for the next decades. The location and wave conditions of the planned wind farms make them susceptible to ... -
Response predictions using the observed autocorrelation function
(Journal article; Peer reviewed, 2018)This article studies a procedure that facilitates short-time, deterministic predictions of the waveinduced motion of a marine vessel, where it is understood that the future motion of the vessel is calculated ahead of time. ... -
Response validation of a submerged floating tunnel segment
(Peer reviewed; Journal article, 2022)Tube segments are the main structural components of submerged floating tunnels (SFTs). Accurately estimating the hydrodynamic properties of these components is of critical importance for the optimization and safe design ... -
Response-Based Assessment of Operational Limits for Mating Blades on Monopile-Type Offshore Wind Turbines
(Journal article; Peer reviewed, 2019)Installation of wind-turbine blades on monopile-type offshore wind turbines is a demanding task. Typically, a jack-up crane vessel is used, and blades are individually lifted from the vessel deck and docked with the ... -
Restoration and Testing of the Hydra Research‐Engine
(Master thesis, 2017)This thesis has aimed to be a driving factor in the restoration process of the Hydra research engine. During the semester, several changes and improvements has been done to restore the engine to its former glory. These ... -
Retrieval of Ocean Wave Spectra From X-Band Marine Radar Images Using Inversion Schemes Based on Auto-Spectral Analysis
(Chapter, 2023)Estimation of ocean wave conditions is extremely crucial for the planning and execution of demanding marine operations. Further, the Response Based Decision-Making requires accurate wave inputs to derive the responses using ... -
Retrofit Preparations of Liquid Natural Gas Carriers to Handle Future Uncertainty
(Master thesis, 2022)Skipseiere står i dag overfor et betydelig problem når de bestiller skip. Nye utslippsreguleringer tvinger eldre skip til å redusere motorkraften eller gjøre kostbare ombygginger. Reguleringene vil bli strengere og strengere ... -
Retrofitting a Deep Sea Shipping Fleet; Keeping Up With Regulatory Emissions Targets
(Master thesis, 2023)Denne masteroppgaven belyser en presserende global utfordring, nemlig behovet for å kutte klimagassutslipp i internasjonal skipsfart. Selv om rundt 90% av den internasjonale godstrafikken skjer via dyphavsskipsfart, er det ... -
Review and comparison of existing risk analysis models applied within shipping in ice-covered waters
(Peer reviewed; Journal article, 2021)With the changing climate and declining extent of sea ice, the activities in the Arctic region have become increasing significantly. Compared to the environments with ice-free waters, the harsh environment in the Arctic ...