Browsing NTNU Open by Author "Faltinsen, Odd Magnus"
Now showing items 1-20 of 86
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3D Domain Decomposition for Violent Wave-Ship Interactions
Greco, Marilena; Colicchio, G; Lugni, Claudio; Faltinsen, Odd Magnus (Journal article, 2013)A 3D Domain-Decomposition (DD) strategy has been developed to deal with violent wave-ship interactions involving water-on-deck and slamming occurrence. It couples a linear potential flow seakeeping solver with a Navier–Stokes ... -
3D motion dynamics of axisymmetric bodies falling through water
Alsos, Hagbart Skage; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2018)A new simplified method for analysis of 3D motion dynamics of axisymmetric slender bodies falling from air through water is presented. Slender-body theory for potential flow of incompressible water is combined with 2D + t ... -
A domain-decomposition strategy for a compressible multi-phase flow interacting with a structure
Greco, Marilena; Colicchio, Giuseppina; Faltinsen, Odd Magnus (Journal article, 2014)The problem of a high-pressure gas cavity and its interaction with surrounding liquid and a close-by structure is examined numerically. Even though this is of interest in many practical applications, here, the focus is on ... -
A harmonic polynomial cell (HPC) method for 3D Laplace equation with application in marine hydrodynamics
Shao, Yanlin; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2014)We propose a new efficient and accurate numerical method based on harmonic polynomials to solve boundary value problems governed by 3D Laplace equation. The computational domain is discretized by overlapping cells. Within ... -
A harmonic polynomial method based on Cartesian grids with local refinement for complex wave-body interactions
Wang, Jingbo; Faltinsen, Odd Magnus (Chapter, 2018)A novel numerical method is proposed for complex potential free-surface flows of incompressible liquids with and without bodies. The present method combines high-order harmonic polynomials with Cartesian grids with local ... -
A numerical study of the second-order wave excitation of ship springing by a higher-order boundary element method
Shao, Yanlin; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2014)This paper presents some of the efforts by the authors towards numerical prediction of springing of ships. A time-domain Higher Order Boundary Element Method (HOBEM) based on cubic shape function is first presented to solve ... -
A Numerical Study on Stratified Shear Layers With Relevance to Oil-Boom Failure
Kristiansen, David; Faltinsen, Odd Magnus (Chapter, 2014)Interface dynamics of two-phase flow, with relevance for leakage of oil retained by mechanical oil barriers, is studied by means of a 2D lattice-Boltzmann method combined with a phase-field model for interface capturing. ... -
A Theoretical and Experimental Study of Wave-induced Hydroelastic Response of a Circular Floating Collar
Li, Peng (Doctoral theses at NTNU;2017:75, Doctoral thesis, 2017)Wave-induced hydroelastic response of a circular plastic collar used as a floater of a net cage in aquaculture is studied by means of theory, model tests and numerical simulations. A low-frequency linear slender-body ... -
A Two-dimensional Numerical and Experimental Study of a Floater with Net and Sinker Tube in Waves and Current
Bardestani, Mohsen (Doctoral theses at NTNU;2017:111, Doctoral thesis, 2017)In this thesis, nonlinear wave and current forces on a coupled system of a moored floater with net panel and sinker tube is studied. Due to the complexity of the hydrodynamic analysis of a complete three-dimensional fish ... -
Advances in fluid mechanics for offshore engineering: A modelling perspective
Brocchini, M; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2015) -
An Experimental Study on the Wave-Induced Hydroelastic Response of a Floating Solar Island
Winsvold, Jonathan (Master thesis, 2018)Future energy demand are expected to increase substantially in the next decades, and there is a real need to consider new ways of supplying the energy market with cost-efficient, dependable and green sources of energy. The ... -
An inviscid analysis of the Prandtl azimuthal mass transport during swirl-type sloshing
Faltinsen, Odd Magnus; Timokha, Alexander (Journal article; Peer reviewed, 2019)An inviscid analytical theory of a slow steady liquid mass rotation during the swirl-type sloshing in a vertical circular cylindrical tank with a fairly deep depth is proposed by utilising the asymptotic steady-state wave ... -
Analysis of loads, motions and cavity dynamics during freefall wedges vertically entering the water surface
Wang, Jingbo; Lugni, Claudio; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2015)In this paper, theoretical models are developed and numerical methods are used to analyze the loads, motions and cavity dynamics for freefall wedges with different deadrise angles vertically entering the water surface at ... -
Analysis on Shift of Nature Modes of Liquid Sloshing in a 3D Tank Subjected to Oblique Horizontal Ground Motions with Damping Devices
Wu, C.H.; Faltinsen, Odd Magnus; Chen, B-F (Journal article; Peer reviewed, 2013)The extended study of Wu et al. (2012) of sloshing fluid in tanks with internal structures from 2D to 3D is presented in the paper. The phenomenon of liquid sloshing in a 3D tank with various damping devices is solved by ... -
Application of a 2D harmonic polynomial cell (HPC) method to singular flows and lifting problems
Liang, Hui; Faltinsen, Odd Magnus; Shao, Yanlin (Journal article; Peer reviewed, 2015)Further developments and applications of the 2D harmonic polynomial cell (HPC) method proposed by Shao and Faltinsen [22] are presented. First, a local potential flow solution coupled with the HPC method and based on the ... -
Assessment of Low-Frequency Roll Motions on the Semisubmersible Drilling Rig COSL Pioneer
Browne, Vibeke Christine (Master thesis, 2013)Excessive roll motions were registered on the drilling rig COSL Pioneer on January 25th 2012. Calculations performed by Global Maritime showed less roll motions than registered, but were consistent with the other five ... -
Can the water on deck influence the parametric roll of a FPSO? A numerical and experimental investigation
Greco, Marilena; Lugni, Claudio; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2014)Parametric roll and water on deck are investigated numerically and experimentally for a FPSO ship in head-sea regular waves in the zone of the first fundamental resonance. On the numerical side, a weakly-nonlinear potential ... -
Comparative investigation: Closed versus semi-closed vertical cylinder-shaped fish cage in waves
Shen, Yugao; Firoozkoohi, Reza; Greco, Marilena; Faltinsen, Odd Magnus (Journal article; Peer reviewed, 2022)A comparative analysis between a closed cage (CC) and a semi-closed/open-bottom cage (OC) in regular, white-noise and irregular waves is presented. Both cages consist of a vertical circular free surface-piercing cylinder ... -
Comparison of ship’s speed loss in waves in some numerical simulation methods
Sasa, Kenji; Faltinsen, Odd Magnus; Kashiwagi, Masashi (Journal article, 2017)This study evaluates the difference in speed loss, engine power, and fuel oil consumption of a bulk carrier from the viewpoint of weather routing. The evaluation of speed loss is important as speed loss influences accurate ... -
Development and validation of speed loss for a blunt-shaped ship in two rough sea voyages in the Southern Hemisphere
Sasa, Kenji; Faltinsen, Odd Magnus; Lu, Li-Feng; Sasaki, Wataru; Prpic-Orsic, Jasna; Kashiwagi, Masashi; Ikebuchi, Taruko (Journal article; Peer reviewed, 2017)Maritime transportation is becoming increasingly complex owing to the fluctuation of oil prices, the introduction of environmental guidelines, and the onset of climate change. Although optimal routing has been researched ...