Blar i Institutt for marin teknikk på tittel
Viser treff 2670-2689 av 3421
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Research on operating parameters of T-groove cylindrical gas film seal based on computational fluid dynamics
(Peer reviewed; Journal article, 2019)Cylindrical gas film sealing technology is a new type of dry gas sealing technology. Compared with the face gas film sealing technology, the cylindrical gas film seal presents a strong floating property, which can reduce ... -
Resilience by Latent Capabilities in Marine Systems
(Doctoral theses at NTNU;2018:394, Doctoral thesis, 2018)This thesis addresses the need for resilience, the ability of a system to recover from a disruption, in marine systems. It proposes to enhance resilience in the operational phase by taking advantage of latent capabilities, ... -
Resistance analysis of trimaran service vessel using CFD
(Master thesis, 2018)Service vessels within the aquaculture industry are normally designed as catamarans, however, the ships experience large resistance, where the contribution from wave resistance is dominant. In order to increase the ship ... -
Resistance due to open moonpools on offshore ships
(Master thesis, 2015)A moonpool is a vertical well in a vessels hull that is exposed to the sea. Many types of offshore vessels are equipped with such a moonpool, to facilitate maritime operations. The water column inside of the moonpool is ... -
Resonant sloshing in a square-base tank due to an angular-and-horizontal periodic forcing
(Journal article, 2016)Розробляється модальний метод для задачi про коливання рiдини у резервуарi квадратного перерiзу, який виконує перiодичнi горизон- тальнi та кутовi рухи малої амплiтуди. Аналiз показує, що домiнан- тна хвильова компонента ... -
Resonant steady-state sloshing in upright tanks performing a three-dimensional periodic motion
(Journal article, 2019)Analytical approaches to hydrostatic capillary (meniscus) problem in infinite horizontal channel and axisymmetric container are developed. For these geometric cases, finding the capillary menisci reduces to freeboundary ... -
Resonant Steady-State Sloshing in Upright Tanks: Effect of Three-Dimensional Excitations and Viscosity
(Chapter, 2018)Bearing in mind recent experimental and theoretical results showing that viscous damping can qualitatively affect resonant sloshing in clean tanks, the Narimanov-Moiseev multimodal sloshing theory for an upright circular ... -
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 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 ...