Blar i NTNU Open på forfatter "Greco, Marilena"
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An Open-Source Python-Based Boundary-Element Method Code for the Three-Dimensional, Zero-Froude, Infinite-Depth, Water-Wave Diffraction-Radiation Problem
Viswanathan, Savin; Holden, Christian; Egeland, Olav; Greco, Marilena (Journal article; Peer reviewed, 2021)In this paper, a new open-source implementation of the lower-order, 3-D Boundary Element Method (BEM) of solution to the deep-water, zero Froude-number wave-body interaction problem is described. A validation case for ... -
Operational limits for floating-collar fish farms in waves and current, without and with well-boat presence
Shen, Yugao (Doctoral theses at NTNU;2018:367, Doctoral thesis, 2018)Dynamic response of a floating circular collar-type fish farm, without and with well-boat presence, in current, regular and irregular waves is analyzed. A modern design well boat and a realistic fish farm (with single cage) ... -
Parametric Resonance of a Fishing Vessel With and Without Anti-Roll Tank: An Experimental and Numerical Study
Ghamari, Isar; Greco, Marilena; Faltinsen, Odd Magnus; Lugni, Claudio (Chapter; Peer reviewed, 2017)Parametric resonance (PR) in roll is of concern for fishing vessels, especially in head-sea waves. Here the effect of passive anti-roll free-surface tank is investigated experimentally and numerically on realistic ... -
Path Following Control of Underactuated Surface Vessels in the Presence of Multiple Disturbances
Caharija, Walter; Sørensen, Asgeir Johan; Pettersen, Kristin Ytterstad; Greco, Marilena; Gravdahl, Jan Tommy (Chapter, 2019)An integral version of the line-of-sight guidance method is shown to compensate for both kinematic and dynamic disturbances generated by wind, waves and sea currents. The guidance law is designed for path following tasks ... -
Physical investigation of slamming loads on a 2D body
Øien, Pauline Kværnes (Master thesis, 2015)In this thesis a physical investigation of the slamming loads on a two-dimensional body is performed. It includes an experimental analysis of a drop test performed at MARINTEK's laboratories on a wedge shaped section in ... -
A Potential Flow Method Combining Immersed Boundaries and Overlapping Grids: Formulation, Validation and Verification
Hanssen, Finn Christian W.; Greco, Marilena (Peer reviewed; Journal article, 2021)A fully nonlinear two-dimensional numerical method based on potential-flow theory for water waves and their interaction with surface-piercing rigid bodies is presented. The harmonic polynomial cell (HPC) method is used to ... -
Roll-yaw coupling effects on parametric resonance for a ship in regular waves
Greco, Marilena; Lugni, Claudio; Faltinsen, Odd Magnus (Chapter, 2014)This work represents a further step of the physical study documented by Greco and Lugni (2012b) and Greco et al. (2014). Three-dimensional experiments have been performed on a FPSO model in regular waves to investigate the ... -
Severe Wave-Body Interactions: a Potential-Flow HPC Method and its Strong Domain-Decomposition Coupling with a Level-Set Navier-Stokes Solver
Hanssen, Finn-Christian Wickmann; Colicchio, Giuseppina; Greco, Marilena (Chapter, 2019)The main objective of our ongoing research is to investigate wave loads on and motions of floating bodies in steep waves. For modelling non-linear water-wave and wave-body interaction problems, researchers can use two main ... -
Simplified Analysis of Wave Impacts Hydroelastic Effects on Semisubmersible Structure in Steel
Ahani, Alireza; Greco, Marilena (Chapter, 2023) -
Statistisk Analyse av Dimensjonerende Laster for et Fartøy: Slamming Laster
Jordal, Lars Otto Bauer; Johannessen, Peter-Emil S (Master thesis, 2013)SammendragPå grunn av klimaendringer, opptrer stormer og sykloner sjeldnere enn før. Imidlertid viser forskning at intensiteten på stormene øker. Dette føre til mer ekstreme bølgehøyder, som den maritime næringen må forholde ... -
Structural loads on a free-falling lifeboat
Groth, Simen (Master thesis, 2017)Free-falling lifeboats are a method of escaping hazardous events in open sea. They rest at a skid until released and launched into the water. It is important that the use of free-falling lifeboats ensure a safe evacuation. ... -
Systematic Analysis of Experiments on Sub-Carangiform Fish Hydrodynamics
Søvik, Eirik Ruben Grimholt (Master thesis, 2022)Målet med denne oppgaven er å undersøke om det er en måte å systematisk samle data fra fiskesvømmeeksperimenter slik at fremtidig datautvinning for påfølgende analyse kan foregå mye raskere. Det er gjort et forarbeid for ... -
The harmonic polynomial cell method for moving bodies immersed in a Cartesian background grid
Hanssen, Finn Christian W.; Greco, Marilena; Shao, Yanlin (Chapter; Peer reviewed, 2015)In numerical simulations with moving bodies, and often with complex geometries, generation of high-quality body-fitted grids is a cumbersome and time-consuming task. An alternative is to use a fixed (Cartesian) background ... -
Underwater explosions near marine structures: a Dynamics Fluid Structure Domain-Decomposition strategy
Colicchio, Giuseppina; Greco, Marilena; Faltinsen, Odd Magnus (Chapter, 2016)Historically underwater explosions (UEs) have been investigated for their huge military relevance, but they remain an important issue also for civil marine applications. As an example, UEs can occur near or on oil-gas ... -
Validation of damaged ship hydrodynamics by a Domain Decomposition Approach using the Harmonic Polynomial Cell method and OpenFOAM
Siddiqui, Mohd Atif; Greco, Marilena; Colicchio, Giuseppina; Faltinsen, Odd Magnus (Chapter, 2018) -
Wave-Induced Accelerations of a Fish-Farm Elastic Floater: Experimental and Numerical Studies
Li, Peng; Faltinsen, Odd Magnus; Greco, Marilena (Chapter; Peer reviewed, 2014)Numerical simulations and experiments of an elastic circular collar of a floating fish farm are reported. The floater model without netting structure is moored with nearly horizontal moorings and tested in regular deep-water ...