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Experience from Parametric Rolling of Ships
, 2011 This chapter reviews three recent full-scale events with parametric rolling for Ro–Ro Large Car and Truck Carriers (LCTC). The events represent three principally different modes of parametric rolling: principal parametric resonance where the period of encounter is half of the roll natural period in following seas (I) and in head seas (II), and ...
Anders Rosén +2 more
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A nonlinear model of parametric rolling stabilization by anti-roll tanks
Ocean Engineering, 2009The present paper describes a mathematical model in which the fluid motion inside a U-tank is nonlinearly coupled to the heave, roll and pitch motions of the ship. The main purpose of the investigation is centred on the control of roll motion in the case of parametric resonance in longitudinal waves.
Marcelo A S Neves, Claudio A Rodríguez
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Trimaran Vessels and Parametric Roll
, 2011 Parametric roll can occur in case of trimaran vessels, in particular when the outriggers have limited draught and/or limited transversal separation. Due to the significant nonlinearities of the restoring moment and due to the often complex shape of the metacentric height in waves for this type of ships, parametric roll clearly shows quite peculiar ...
BULIAN, GABRIELE, FRANCESCUTTO, ALBERTO
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Nonlinear and stochastic aspects of parametric rolling modeling
, 2004 This paper addresses, starting from an extensive series of tests in longitudinal regular waves (already done) and irregular waves (in progress), the problems connected with the threshold formulation for parametric rolling and its amplitude modeling above threshold.
FRANCESCUTTO, ALBERTO +2 more
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On the Possibility of Parametric Rolling for Naval Vessels
, 2005 This paper addresses, starting from an extensive series of tests in longitudinal regular waves, the problems connected with the threshold formulation for parametric rolling and its amplitude modelling above threshold. Both head and following waves have been considered, also in view of the greater attention to head sea conditions called during IMO/SLF ...
BULIAN, GABRIELE +2 more
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Parametric Rolling Simulations of Container Ships
Volume 9: Odd M. Faltinsen Honoring Symposium on Marine Hydrodynamics, 2013A hybrid nonlinear time domain seakeeping analysis is applied to the study of a container ship advancing at different headings and encounter frequencies. A time-domain nonlinear strip theory in six degrees-of-freedom has been extended to predict ship motions by solving the unsteady hydrodynamic problem in the frequency domain and the equations of ...
Turk, Anton +2 more
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SPIE Proceedings, 2016
Ships are mainly built to sail and transport cargo at sea. Environmental conditions and state of the sea are communicated to vessels through periodic weather forecasts. Despite officers being aware of the sea state, their sea time experience is a decisive factor when the vessel encounters severe environmental conditions. Another important factor is the
Nicoleta Acomi +4 more
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Ships are mainly built to sail and transport cargo at sea. Environmental conditions and state of the sea are communicated to vessels through periodic weather forecasts. Despite officers being aware of the sea state, their sea time experience is a decisive factor when the vessel encounters severe environmental conditions. Another important factor is the
Nicoleta Acomi +4 more
openaire +1 more source
Head-wave parametric rolling of a surface combatant
Ocean Engineering, 2010Complementary CFD, towing tank EFD, and nonlinear dynamics approach study of parametric roll for the ONR Tumblehome surface combatant both with and without bilge keels is presented. The investigations without bilge keels include a wide range of conditions.
Sadat Hosseini H. +7 more
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Parametric rolling behaviour of azimuthing propulsion-driven ships
Ocean Engineering, 2008 The study investigates the experimental and numerical analysis of the occurrence of auto-parametric rolling for large, high-speed pod-driven ships in waves.
Seref Aksu +9 more
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