Seakeeping Analysis of Planing Craft under Large Wave Height

Bi, Xiaosheng; Zhuang, Jian; Su, Yumin

doi:10.3390/w12041020

Cited by 14 publications

(2 citation statements)

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“…The vertical motions of high-speed craft have negative consequences that limit the speed. It is not only a matter of structural damage or safety risks, but this can contribute in a cumulative way to seasickness of the crew [24], [25], [26], [27].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the air-water interface effects of an airboat

Samson Nitonye,

Tamunodukobipi Daniel,

Douglas Ibiba

2024

Global J. Eng. Technol. Adv.

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This paper describes the Air-Water Interface (AWI) occurrence effects of the airboat at various speed, draught, and trim angle. This evaluates the dynamics of AWI with focus on the mechanisms involved in air displacement, the formation of air cushion, boundary layer turbulence, surface tension and wave generation. The analysis involves the change in speed, draught, and trim (0, 1, 1.5 and 2 degrees). The speed of 1.01 and 3.35m/s for displacement and planning regions of the airboat operation were examined. At the AWI, the thin layer of water molecules is affected by the airboat movement at the said trim, it is observed that the layer at the boundary will experience turbulence due to passing air over the layer and the interaction between the air and water at the interface causes mixing and creates waves or ripples at that trim. The wave generated at various trim angles will also create unique wave even at the same speed and draught with a change in trim. The difference in wave formation is seen not to be the same with the change in trim and these changes are observed at the bow and the aft of the vessel. This is also connected to the volume displacement of the boat, the resistance of the vessels, the angle of trim of the airboat and the hull form of the boat. This shows that displacement, resistance, angle of trim and hull form of the boat play critical and crucial roles in wave formation especially for the airboat.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of the air-water interface effects of an airboat

Samson Nitonye,

Tamunodukobipi Daniel,

Douglas Ibiba

2024

Global J. Eng. Technol. Adv.

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“…Azcueta [25], Wang et al [26] and Ling and Wang [27] utilized computational fluid dynamics approaches, so that the heave and pitch motions of a planing hull in regular head wave can be accurately predicted. Xiaosheng et al [28,29] conducted numerical studies on the seakeeping performance of a planing vessel in a regular head wave. After validating the numerical results with the experimental data with a good accuracy, they used different designs to reach a better seakeeping performance.…”

Section: Introductionmentioning

confidence: 99%

Numerical Prediction of the Vertical Responses of Planing Hulls in Regular Head Waves

Kahramanoğlu

Çakıcı

Doğrul

2020

JMSE

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The evaluation of the hydrodynamic performance of planing vessels has always been one of the most attractive study fields in the maritime agenda. Resistance and self-propulsion studies have been performed using experimental and numerical methods by researchers for a long time. As opposed to this, the seakeeping performance of planing hulls is assessed with 2D approximation methods, but limitedly, while the experimental campaign is not cost-effective for several reasons. With this motivation, pitch and heave transfer functions and accelerations were obtained for a monohedral hull and a warped hull using a state of art commercial Reynolds-averaged Navier–Stokes (RANS) solver, in this study. Moreover, 2-DOF (degree of freedom) dynamic fluid–body interaction (DFBI) equations were solved in a coupled manner with an overset mesh algorithm, to find the instantaneous motion of the body. After verification, obtained numerical results at three different Froude numbers and a sufficiently large wave frequency range were compared with the experiments. The results showed that the employed RANS method offers a very accurate prediction of vertical motions and accelerations for planing hulls.

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