Maneuvering of two interacting ships in calm water

Xiang, Xu; Faltinsen, Odd M.

doi:10.1007/bf03449294

Cited by 15 publications

(13 citation statements)

References 12 publications

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“…Similarly, an attraction force can be expected when the ice moving away from the platform. This issue is studied before, for instance, in the scope of maneuvering of two interacting ships in [26]. To what extend this effect influence the motions of the ice, and how to include it for an object which oscillates in waves, needs further investigations.…”

Section: Hydrodynamic Interactionsmentioning

confidence: 99%

Hydrodynamic Modelling and Estimating Response of Glacial Ice Near a Drilling Rig

Ommani

Berthelsen

Lie

et al. 2019

Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology

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Impact scenarios involving a typical drilling rig and glacial ice are studied. The goal is to better identify the important physical effects in modelling the dynamics of glacial ice in presence of waves and a floating platform, whilst improving simulation tools to capture the location and energy of possible collisions. A state-of-the-art numerical model of a typical semi-submersible is developed and calibrated with model tests to represent the drilling rig. A systematic incremental approach is adopted to model the dynamics of glacial ice. Long wave approximation, nonlinear excitation and restoring forces, interaction forces with the semi-submersible, and viscous forces due to flow separation are among the models which are considered step by step. The sensitivity of the resulted collision scenario to the modelling choices is investigated. The possibility of impact with columns, pontoons, and risers are particularly studied. Based on the obtained results, recommendations are made for modelling of glacial ice dynamics in presence of a floating platform.

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Section: Hydrodynamic Interactionsmentioning

confidence: 99%

Hydrodynamic Modelling and Estimating Response of Glacial Ice Near a Drilling Rig

Ommani

Berthelsen

Lie

et al. 2019

Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology

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“…The flow equations are solved using standard zero-order panels and Rankine sources with or without the effect of restricted water depth and channel walls [12,19]. Based on the solution of the source strength on the panels describing the bodies, the hydrodynamic forces on the ships are computed based on equations developed by Xiang and Faltinsen [30]. These equations are used to compute the complete set of hydrodynamic forces on all bodies.…”

Section: Ropesmentioning

confidence: 99%

Bank effects for KVLCC2

et al. 2018

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A study is presented on ship-bank interaction effects in which viscous-flow solvers are used to predict the hydrodynamic forces and moments on the ship. The ship under consideration is the KRISO Very Large Crude Carrier (KVLCC2). For this hull form, Flanders Hydraulics Research (FHR) has conducted shallow water model tests in their towing tank equipped with surface-piercing banks and a vertical quay wall. The forces and moments on the KVLCC2 model were obtained for various water depths and lateral distances to the banks. Additionally, the wave elevation was measured between the quay wall and the ship model. In this study, two different CFD codes are used to predict the loads on the KVLCC2 as a function of the water depth and lateral position in the channel. The effect of propeller suction and free surface modelling on the results is quantified. Furthermore, comparisons will be made with CFD results from literature and potential flow computations to highlight the benefits of each approach. It will be shown that with careful setup of the computations, reliable predictions of the ship-bank interaction effects can be obtained.

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“…Methods for calculation of sway force and yaw moments for two vessels moving under close proximity in deep-water and shallow-water conditions are presented by Tuck and Newman [16] and Yeung [17], respectively. Other numerical methods for predicting such forces and moments for two vessels moving under close proximity are also presented by Huang and Chen [18], Sutulo and Guedes Soares [19], Xiang and Faltinsen [20], King [21], Varyani and Krishnankutty [22] Xu et al [23], Sutulo et al [24], and Zhou et al [25]. A theoretical method to predict the sinkage and trim conditions of two moving vessels under parallel meeting and overtaking conditions is presented by Gourlay [26].…”

Section: B Ship Interactionsmentioning

confidence: 99%

Experimental Evaluations on Ship Autonomous Navigation and Collision Avoidance by Intelligent Guidance

Perera

Ferrari

Santos

et al. 2015

IEEE J. Oceanic Eng.

119

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Experimental evaluations on autonomous navigation and collision avoidance of ship maneuvers by intelligent guidance are presented in this paper. These ship maneuvers are conducted on an experimental setup that consists of a navigation and control platform and a vessel model, in which the mathematical formulation presented is actually implemented. The mathematical formulation of the experimental setup is presented under three main sections: vessel traffic monitoring and information system, collision avoidance system, and vessel control system. The physical system of the experimental setup is presented under two main sections: vessel model and navigation and control platform. The vessel model consists of a scaled ship that has been used in this study. The navigation and control platform has been used to control the vessel model and that has been further divided under two sections: hardware structure and software architecture. Therefore, the physical system has been used to conduct ship maneuvers in autonomous navigation and collision avoidance experiments. Finally, several collision avoidance situations with two vessels are considered in this study. The vessel model is considered as the vessel (i.e., own vessel) that makes collision avoidance decisions/actions and the second vessel (i.e., target vessel) that does not take any collision avoidance actions is simulated. Finally, successful experimental results on several collision avoidance situations with two vessels are also presented in this study.

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Maneuvering of two interacting ships in calm water

Cited by 15 publications

References 12 publications

Hydrodynamic Modelling and Estimating Response of Glacial Ice Near a Drilling Rig

Hydrodynamic Modelling and Estimating Response of Glacial Ice Near a Drilling Rig

Bank effects for KVLCC2

Experimental Evaluations on Ship Autonomous Navigation and Collision Avoidance by Intelligent Guidance

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