Blar i Institutt for marin teknikk på tittel
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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) ... -
Numerical Investigation of 3D Flow around Two Tandem Cylinders
(Chapter, 2016)Circular cylinders in tandem arrangement are frequently encountered in marine applications, for example as dual pipelines and dual risers. Complex flows arise around tandem cylinders, inducing large fluctuating forces on ... -
Numerical investigation of a bottom-fixed wind turbine in severe environmental conditions
(Master thesis, 2019)Markedet for fornybar energi øker i takt med teknologiutvikling og interesse for å utvikle vindenergimarkedet til havområder. Utfra denne motivasjonen er det av interesse å undersøke en bunnfestet vindturbin i grunt vann ... -
Numerical investigation of collapse and ductile fracture in X65 offshore pipelines subject to external pressure, bending and axial loads
(Master thesis, 2016)An offshore pipeline during S-laying in deep water may be subject to high pressure, bending and tensile loads. In the event of loss of tension the pipe may buckle for sufficiently high external pressures and bending moments. ... -
NUMERICAL INVESTIGATION OF FLOW AROUND INTERSECTING CYLINDERS
(Master thesis, 2016)Recent years interfering effects in the wake of bluff body are drawing more attention, especially for the intersecting cylinders. The structures with the similar shape of the intersecting cylinder are used in many industrial ... -
Numerical investigation of flow around intersecting cylinders as part of a net structure
(Master thesis, 2017)Interference effects occurs in the wake of cylindrical bodies. In marine fishery and aquaculture industry, circular cylinder is very common in offshore fish farm. The cage, as a knot structure, is consist of intersecting ... -
Numerical Investigation of Flow Around Rectangular Cylinders at Low Reynolds Numbers
(Master thesis, 2015)The study of flow around bluff bodies such as rectangular and circular cylinders is of direct relevance to several practical applications in the marine industry. The flow past bluff bodies involves several fluid phenomena, ... -
Numerical investigation of flow around straight cylinders with inclination
(Master thesis, 2016)In this master thesis the validity of the independence principle(I.P) on an inclined infinite circular cylinder has been investigated. Normalized Reynolds numbers 150 and 1000 for inclination angles 0°-65° were studied. ...