Browsing Institutt for marin teknikk by Title
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Numerical and Experimental Investigation of a Floating Offshore Wind Turbine Foundation with a Moonpool and Inner and Outer Skirts
(Master thesis, 2022)Flytende havvind har muligheten til å bli stor bidragsyter for å nå målet om et karbonnøytralt samfunn. Så langt er havvind avhengig av subsidier for å være konkurransedyktig, og innovative og kostnadseffektive løsninger ... -
Numerical and Experimental Investigation of a Floating Substation
(Master thesis, 2023)Konseptet ”Floating Substation” er utviklet av Sevan SSP og har potensial til å bli brukt i flere ulike bransjer, fra offshore vindkraft, karbonfangst og -lagring til offshore akvakultur. Det spesielle med designet er den ... -
Numerical and experimental investigation of a hinged 5-body wave energy converter
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:66, Doctoral thesis, 2014)This thesis deals with modeling and simulation of a hinged 5 body wave energy converter (WEC), including verification by comparison with experimental results. The WEC consists of a shallow draft cylindrical center floater ... -
Numerical and Experimental Investigation of Added Resistance in Waves
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:329, Doctoral thesis, 2011)Added resistance in waves is important for ship powering performance, since ships are travelling most of the time in waves, not in calm water. With increasing focus on fuel consumption and greenhouse gas emissions, there ... -
Numerical and Experimental Investigation of Parametric Roll
(Master thesis, 2013)The main purpose of this Master thesis is to provide insights about thesensitivity of parametric roll occurrence. Parametric roll resonance may leadto large roll angles experienced by the ship typically in longitudinal ... -
Numerical and experimental investigation of stationkeeping in level ice
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:329, Doctoral thesis, 2012)Stationkeeping method is crucial for successful marine operations in ice-covered waters. Depending on the type of structure, two methods are used in the numerical study, namely mooring system and DP combined mooring ... -
Numerical and Experimental Investigation of whipping in Twin Hull Vessels exposed to serve wet Deck slamming
(Dr. ingeniøravhandling, 0809-103X; 2002:86, Doctoral thesis, 2002)An investigation of global structural loads in large twin hull vessels to severe wet deck slamming has been carried out. The study contains two main parts: • An experimental investigation. • Development of a numerical ... -
Numerical and Experimental Investigation on a Circular FOWT Foundation with a Moonpool
(Master thesis, 2023)Denne oppgaven undersøker forskjellige variasjoner av horisontale og vertikale dempeplater på et sirkulært flytende vindkraft konsept som innehar et stort sentrert ”moonpool”. Arbeidet er blitt utført både eksperimentelt ... -
Numerical and experimental investigations of hydrodynamic loads on catamaran type floating solar island
(Master thesis, 2023)Det er en økende etterspørsel etter grønn energi. Flytende soløyer kan være en potensiell kilde til å bidra til dette. I skrivende tid, er de fleste flytende soløykonstruksjonene plassert i beskyttede områder, eksempelvis ... -
Numerical and experimental investigations on mooring loads of a marine fish farm in waves and current
(Journal article; Peer reviewed, 2018)A realistic aquaculture fish farm system in both regular and irregular waves is investigated by numerical simulations and model tests. The main purpose is to develop a reliable numerical tool and in this respect to investigate ... -
Numerical and Experimental Studies of Maneuvering in Regular and Irregular Waves
(Doctoral theses at NTNU;2022:168, Doctoral thesis, 2022)The present work is a numerical and experimental study on maneuvering in regular and irregular waves of the Duisburg Test Case (DTC), a container ship with block coefficient CB = 0:661. Two test campaigns of free-running ... -
Numerical and Experimental Studies of Resonant Flow in Moonpools in Operational Conditions
(Doctoral theses at NTNU;2020:152, Doctoral thesis, 2020)The present work is relevant for ships with moonpools. A moonpool is a vertical opening through the ship hull, typically used to descend objects into the sea. Model tests and numerical simulations are carried out to ... -
Numerical and experimental study of forced heave of two-dimensional section in ice
(Master thesis, 2010)A two-dimensional study of a ship section forced to heave in open water and surrounded by plates representing ice have been performed. The setting is a ship moored in ice infested waters. The ice is modeled as a stiff rigid ... -
Numerical and Experimental Study of the Fred Olsen Wind Turbine Concept
(Master thesis, 2016)In this Master's thesis the numerical model designed by Fred. Olsen (FO) is improved, and a long-term analysis for design checks is performed. The hydrodynamic loads for the numerical model were initially based on Morison's ... -
Numerical and Experimental Study on the Parametric Roll Resonance for a Fishing Vessel with and without forward speed
(Peer reviewed; Journal article, 2020)The parametric resonance in roll motion (known shortly as parametric roll) was studied for a fishing vessel in regular waves. This is an instability and resonance phenomenon that can lead the roll to reach very high ... -
Numerical and Experimental Study on the Seakeeping Behavior of Floating Closed Rigid Fish Cages
(Chapter, 2018)The present paper addresses the seakeeping behavior of a rigid type of floating closed fish cages, with focus on effects of sloshing on the coupled motions and mooring loads. Closed cages have gained much attention recently ... -
Numerical and Experimental Study on the Ship Parametric Roll Resonance and the Effect of Anti- Roll Tank
(Doctoral theses at NTNU;2019:21, Doctoral thesis, 2019)The parametric resonance in roll motion (known shortly as parametric rolling) was studied for a fishing vessel and container ship in regular waves. This is an instability and resonance phenomenon that can lead the roll to ... -
Numerical assessment of a double-acting offshore vessel's performance in level ice with experimental comparison
(Journal article; Peer reviewed, 2014)In this paper a numerical model is used to investigate the level ice performance of a double-acting intervention vessel, and the results are compared with a limited set of experimental data. The icebreaking capability and ... -
Numerical investigation of 3D flow around a circular cylinder with forced oscillations
(Master thesis, 2023)Sirkulære sylindere blir brukt i ulike maritime anvendelser som rørledninger og stigerør. Flere eksperimenter utført ved Marintek ble gjennomført av K.H. Aronsen på problemet med en sylinder som svinger både i x- og ... -
Numerical Investigation of 3D Flow Around Two Tandem Cylinders
(Master thesis, 2015)Circular cylinders in tandem arrangement are used in many marine applications like dual pipelines and dual risers. Turbulent flow in 3D around two tandem cylinders is simulated numerically using Large Eddy Simulation (LES) ...