Hybrid radiation technique of frequency-domain Rankine source method for prediction of ship motion at forward speed

Oh, Seunghoon; Kim, Booki

doi:10.1016/j.ijnaoe.2021.03.002

Cited by 6 publications

(2 citation statements)

References 12 publications

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“…Seakeeping is one of the most essential considerations in designing naval vessels, and seakeeping performance is evaluated by experiments and numerical analyses in the design stage. [1][2][3] It is usually judged by the mission capability in particular sea state and missions. In specific, if the ship motion in a specific operating condition is smaller than the limiting ship motion criteria, the crews and onboard equipment are supposed to properly conduct their tasks for the mission.…”

Section: Introductionmentioning

confidence: 99%

Assessment of percent-time-operable of surface combatants with conventional and wave-piercing hulls

Choi

Kim

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part M:

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The present study concerns assessing and comparing the operability of two surface combatants with conventional and modern wave-piercing hulls. The operability is measured in terms of the percent-time-operable (PTO), based on the capability of missions in the annual operating condition by seakeeping analysis. The seakeeping criteria of the surface combatant in various missions are selected by the literature review applicable to the basic design stage. The numerical seakeeping analysis is performed to obtain ship motion spectra in seaways around the Korean peninsula and North Pacific, after corrected by comparison to the experiments in regular waves. It is found that the wave-piercing hull has higher PTO than the flared hull under a generic operation scenario owing to reduced pitch motion and low resonance frequency of roll motion, the main restraint of seakeeping performance in PTO assessment.

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Section: Introductionmentioning

confidence: 99%

Assessment of percent-time-operable of surface combatants with conventional and wave-piercing hulls

Choi

Kim

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…The sequence of rudder angles and their variations, the ship's speed, and the recursive output speeds of surge, sway, and yaw make up the input model [17]. Oh et al 2021 compared the results of the model tests and discovered that the proposed hybrid radiation technique-adopting three-dimensional Rankine source approach is more accurate and stable numerically, as well as in obtaining seakeeping solutions [18]. Using the Seakeeper computational application, Romadhoni investigates the motion of an ax bow type ship under the influence of regular waves [19].…”

mentioning

confidence: 99%

Motion Response on The Water Ambulance Ship

Alamsyah

Hidayatullah²,

Suardi³

et al. 2023

IJMEIR

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In designing a ship, it is necessary to know the response of the ship's motion before sailing. The purpose of this research is to determine the ship's motion response to waves as well as ship speed in ship loading operational conditions. The method used in this study is the B-spiline mathematical equation and the strip theory method, with the help of ship motion software, which varies the ship's load by 100% DWT, 50% DWT, and 25% DWT. While the highest significant amplitude heave value occurs on a ship with 100% DWT conditions with a speed of 18 knots and a wave direction of 90 0 , which is 2.70 meters, the highest significant value of amplitude pitch occurs on a ship with a condition of 25% DWT with a speed of 6 knots and a wave arrival direction of 180 0 , namely 1.10 degrees, and the highest significant value of roll amplitude occurs in ships with 25% DWT conditions with speeds of 18 knots with a wave arrival direction of 90 0 , which is 3.42 deg. The research results detected at a speed of 18 knots for the significant amplitude heave value, the significant amplitude pitch value, and the maximum RAO value still meet the Nordforsk criteria.

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Time-Domain Higher-Order Boundary Element Method for Simulating High Forward-Speed Ship Motions in Waves

Zhou,

Cheng,

Pan

2024

China Ocean Eng

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Hybrid radiation technique of frequency-domain Rankine source method for prediction of ship motion at forward speed

Cited by 6 publications

References 12 publications

Assessment of percent-time-operable of surface combatants with conventional and wave-piercing hulls

Assessment of percent-time-operable of surface combatants with conventional and wave-piercing hulls

Motion Response on The Water Ambulance Ship

Time-Domain Higher-Order Boundary Element Method for Simulating High Forward-Speed Ship Motions in Waves

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