Blar i NTNU Open på forfatter "Greco, Marilena"
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Nonlinear Hydrodynamic Effects for Bottom-Fixed Wind Turbines
Rosenlund, Even (Master thesis, 2013)This master thesis investigates possible effects from nonlinear wave loading onbottom fixed offshore wind turbines. The resonant phenomena springing andringing are reviewed with focus on their cause, and their possible ... -
Numerical and Experimental Investigation of Parametric Roll
Geyssel, Johannes Joachim Kalevi (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 investigations on mooring loads of a marine fish farm in waves and current
Shen, Yugao; Greco, Marilena; Faltinsen, Odd Magnus; Nygaard, Ivar (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 Study on the Parametric Roll Resonance for a Fishing Vessel with and without forward speed
Ghamari, Isar; Greco, Marilena; Faltinsen, Odd Magnus; Lugni, Claudio (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 Ship Parametric Roll Resonance and the Effect of Anti- Roll Tank
Ghamari, Isar (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 investigation of a bottom-fixed wind turbine in severe environmental conditions
Eriksen, Karoline (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 Fluid-Ice-Structure Interaction During Collision by an Arbitrary Lagrangian Eulerian Method
Song, Ming; Kim, Ekaterina; Amdahl, Jørgen; Greco, Marilena; Souli, M'Hamed (Chapter; Peer reviewed, 2016)When ice floes collide against marine structures, pronounced hydrodynamic loads are induced by the water-ice-structure interaction. With today’s highly competitive structural design market, it is nearly impossible to ignore ... -
Numerical Investigation of Wave-Body Interactions in Shallow Water
Luo, Yi; Vada, Torgeir; Greco, Marilena (Chapter; Peer reviewed, 2014)Present investigation is based on a numerical study using a time-domain Rankine panel method. The effort and novelty is to extend the applicability of the solver to shallower waters and to steeper waves by including ... -
Numerical Investigation of Wave-Body Interactions in Shallow Water
Luo, Yi (Master thesis, 2013)DNV has Wasim (a module of HydroD) as a Rankine panel method potential flow solver originally developed for more concern to deep water analysis. Some attempts have been made to extend the capability of the program in shallow ... -
Numerical study of a well boat operating at a fish farm in current
Shen, Yugao; Greco, Marilena; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2019)Dynamic response of a well boat operating at a fish farm in current is investigated numerically. An objective is to determine the operational conditions of the well boat. In terms of the fish farm, a realistic set-up (with ... -
Numerical study of a well boat operating at a fish farm in long-crested irregular waves and current
Shen, Yugao; Greco, Marilena; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2019)The dynamic response of a coupled well boat–fish farm system in irregular long-crested waves and current is analyzed numerically in the time domain. The main purpose is to investigate the influence of the well boat on the ... -
Numerical study of bilge-keel effect on parametric roll and water on deck for an FPSO
Greco, Marilena; Lugni, Claudio; Colicchio, Giuseppina; Faltinsen, Odd Magnus (Chapter; Peer reviewed, 2015)This research activity represents the logical continuation of the work documented in [1] and [2] on water on deck and parametric roll for an FPSO in regular waves. Here the same numerical method, based on a domain-decomposition ... -
Numerical Study of Nonlinear Effects for the Wave-Induced Drift Loads on an FPSO
Mattson, Frida (Master thesis, 2020)Hovedmålet med denne oppgaven var å undersøke viktigheten av ikke-lineære interaksjonseffekter mellom bølger og skip for driftskreftene på en FPSO i bølger i tre dimensjoner, med fokus på de midlere driftkreftene. Denne ... -
Numerical Study of Parametric Roll on a Fishing Vessel
Greco, Marilena; Lugni, Claudio (Chapter; Peer reviewed, 2013)Present research activity examines numerically the occurrence of parametric roll on a fishing vessel interacting with regular head-sea waves. The adopted solver is an efficient 3-D numerical Domain-Decomposition strategy ... -
Numerical Study of Potential and Viscous, Nonlinear, Effects for Wave Drift Loads on Offshore Structures
Anda, Eirik (Master thesis, 2022)Flytende offshore konstruksjoner utsatt for miljøbelastninger er ofte forankret for å kontrollere posisjonen til konstruksjonen. Forankringen må ta høyde for bølgelaster, da spesielt bølgedriftsbelastninger, før konstruksjonen ... -
Numerical Study on a Floating Wind Turbine in Intermediate Depth
Nærum, Even Sandøy (Master thesis, 2017)Floating wind turbines are considered to be a promising source for renewable energy. Offshore wind power production is moving towards larger turbines and deeper water, and FWT's can unlock areas of rich wind resources ... -
Numerical Study on Wave Drift Loading on Slender Marine Structures
Vadholm, Julie (Master thesis, 2017)This master thesis investigates the wave drift forces acting on slender structures through numerical simulations. Basic theory is presented along with an overview of how the problem is treated in the industry and a description ... -
Numerical study towards closed fish farms in waves using two Harmonic Polynomial Cell methods
Shen, Yugao; Greco, Marilena; Faltinsen, Odd Magnus; Ma, Shaojun (Chapter, 2020)In order to avoid salmon lice and minimize environmental pollution, closed fish-farm concepts are gaining increasing attention in Norway. Violent sloshing of the water inside the closed cage then becomes an important issue ... -
Numerical wave tank for nonlinear waves in various water depths
Zhu, Wenbo (Master thesis, 2015)Numerical wave tank is always important for studying wave-body interactions. This master thesis carried out a step by step procedure to develop a nonlinear wave tank by using HPC method. The thesis work mainly focuses on ... -
Octabuoy Concept and Spar Buoys: Non Linear Effects and Analysis
Dahl, Line J.C. Haakenaasen (Master thesis, 2012)The age of the easy accessible hydrocarbon goes towards the end and new more challenging fields is the future of the oil industry. This is often synonymous with large depths where sea bed mounted platforms are highly ...