Simulation-Based Analysis of Ship Motions in Short-Crested Irregular Seas

Anıl, Kıvanç Ali; Danışman, Devrim Bülent; Sarıöz, Kadir

doi:10.5505/jems.2017.83803

Cited by 2 publications

(4 citation statements)

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“…Following St. Denis and Pierson's [40] studies, the time series can be generated utilizing the principle of superposition. The details of the time series generation process are explained by Anıl et al [26] and Anıl [27]. In the earth fixed coordinate system, the time series for the long crested head seas can be produced with the following equation [40] & [41]:…”

Section: Generation Of the Time Seriesmentioning

confidence: 99%

“…The time series of the derived responses can also be produced by the "real time computer experiments". The details of the time series generation process for the derived responses are explained by Anıl et al [26] and Anıl [27].…”

Section: Generation Of the Time Seriesmentioning

confidence: 99%

“…Verification of the time series of all ship responses and the derived responses can be achieved utilizing the spectral analysis procedure which contains the discrete Fourier transform (DFT) and the smoothing algorithms, as clarified by Newland [28] and Belik [21]. The details of the spectral analysis process are explained by Anıl et al [26] and Anıl [27].…”

Section: Verificationmentioning

confidence: 99%

“…Motivated by the study of Belik [21], Anıl et al [26] and Anıl [27] performed a simulation based analysis of ship motions (in short crested irregular seas) which focuses on the clarification of the theoretical background of this process. This paper is the continuation of these previously published researches using the same methodology, but in addition with "a body-exact strip theory approach".…”

Section: Introductionmentioning

confidence: 99%

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Simulation based calculation of ship motions in extreme seas with a body-exact strip theory approach

2021

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For all design phases of naval vessels, the fidelity of seakeeping calculations in extreme seas is open to discussion due to the inadequacy of the linear theory of ship motions. Currently the computer-generated time series of ship responses and wave height (the real time computer experiments) are utilized to calculate the distribution of the vertical distortion, shear force and bending moment by means of “ship hydroelasticity theory”. Inspired by these studies a simulation based calculation of symmetric ship motions is performed in long crested irregular head seas, in addition with a body-exact strip theory approach. The scope of this study is limited to the ship motions only. Verification is achieved utilizing the spectral analysis procedure which contains the discrete Fourier transform (DFT) and the smoothing algorithms. The results are compared with the experimental data, and the ANSYS AQWA software results. The simulation results provide adequate data for the extreme responses. This state-of-the-art method in addition with a “body-exact strip theory approach” ensures the consistent assessment of the seakeeping performance in extreme sea condition. As a result, it is evaluated that this calculation method can be used in the design stages of naval platforms.

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Section: Generation Of the Time Seriesmentioning

confidence: 99%

Section: Generation Of the Time Seriesmentioning

confidence: 99%

Section: Verificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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