Time Simulation of Water Shipping for a Ship Advancing in Large Longitudinal Waves

Fang, Ming-Chung; Lee, Ming Ling; Lee, Chwang Kuo

doi:10.5957/jsr.1993.37.2.126

Cited by 16 publications

(2 citation statements)

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“…Research performed on fixed structures, for example [2,6,9,11,19,30,50,54,55], has been valuable in understanding important physical phenomena related to the patterns, elevations, and kinematics of such events. However, green water behavior can be different if the structures are moving, such as when they are floating freely (e.g., free heave-pitch oscillation [56]), when they are moored (e.g., [1,21,22,57]), or when they move with forward speed (e.g., [58][59][60][61][62][63][64]).…”

Section: Factors That Influence Green Water Propagationmentioning

confidence: 99%

On the Evolution of Different Types of Green Water Events

Hernández-Fontes

Hernández

Mendoza

et al. 2021

Water

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Green water events may present different features in the initial stage of interaction with the deck of a structure. It is therefore important to investigate the evolution of different types of green water, since not all the events interact with the deck at the same time. In this paper, the evolution of three types of green water events (dam-break, plunging-dam-break, and hammer-fist) are studied. The water surface elevations and volumes over the deck in consecutive green water events, generated by incident [wave trains in a wave flume, were analyzed using image-based methods. The results show multiple-valued water surface elevations in the early stage of plunging-dam-break and hammer-fist type events. Detailed experimental measurements of this stage are shown for the first time. The effect of wave steepness on the duration of the events, maximum freeboard exceedance, and volumes were also investigated. Although the hammer-fist type showed high freeboard exceedances, the plunging-dam-break type presented the largest volumes over the deck. Some challenges for further assessments of green water propagation are reported.

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Section: Factors That Influence Green Water Propagationmentioning

confidence: 99%

On the Evolution of Different Types of Green Water Events

Hernández-Fontes

Hernández

Mendoza

et al. 2021

Water

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“…Ship section theory and improved methods [3][4][5][6][7] provide an effective way for numerical simulation of the ship motion under various wave conditions, on the basis of which, the multiple degrees of freedom of ship motion can be calculated under the influence of waves.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Motion of Shipboard Missiles under the Excitation of Sea Waves

Wang

Feng

et al. 2013

AMR

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Waves in different sea conditions are simulated by the Bretscheider double parameters spectrum using randomly chosen discrete frequencies as its parameters. Ship motion model of six degrees of freedom is established under the Ship coordinates system. As the ship system is linear, the ship motion under irregular waves can be calculated through the amplitude-frequency response function obtained by solving the model when the input is the superposition of regular waves. Finally according to the coordinate transformation between the ship coordinates system and the missile coordinates system, the motion of the shipboard missiles under excitation of sea waves can be analyzed to support the environmental analysis of its combat duty process.

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Numerical scrutiny of the influence of side hulls arrangement on the motion of a Trimaran vessel in regular waves through CFD analysis

Ghadimi

Nazemian

Ghadimi

2018

J Braz. Soc. Mech. Sci. Eng.

124

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Sea environmental conditions such as waves and winds influence several parameters associated with the performance characteristics of Trimaran vessels such as speed, sailing safety, and dynamic forces acting on the structure. On the other hand, the desirable performance of the Trimarans in different sea conditions has attracted the attention of many researchers. However, there remains one of the important issues associated with the design of Trimaran, which is the arrangement of the lateral side hulls, which can help improve its performance. Accordingly, in the current paper, the motion of this type of vessel is numerically investigated for different longitudinal and transversal hull positioning using finite volume method in Flow-3D software. To this end, vessel's motion is examined in the presence of regular waves and at different wave encounter angles. In addition to the optimization of the side hulls location, the dynamics of a Trimaran and its sensitivity to different sea conditions and vessel speed are studied. The computed results show that Trimaran vessels have suitable dynamics with lower longitudinal side body and large transversal distances.

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Time Simulation of Water Shipping for a Ship Advancing in Large Longitudinal Waves

Cited by 16 publications

References 0 publications

On the Evolution of Different Types of Green Water Events

On the Evolution of Different Types of Green Water Events

Analysis of the Motion of Shipboard Missiles under the Excitation of Sea Waves

Numerical scrutiny of the influence of side hulls arrangement on the motion of a Trimaran vessel in regular waves through CFD analysis

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