A Fast Simulation Method for Damaged Ship Dynamics

Acanfora, Maria; Begović, Ermina; Luca, Fabio De

doi:10.3390/jmse7040111

Cited by 26 publications

(8 citation statements)

References 24 publications

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“…Due to the complicated matter of dynamic interactions, the floodwater motions, namely sloshing, may be important for wide rooms [37,38]. The studies concerning the floodwater effects on ship motions have been conducted [39,40] for years in a damage condition, while those concerning the firewater effects on ship motions are relatively rare and still required.…”

Section: Discussionmentioning

confidence: 99%

A Computational Approach to the Prediction of the Floating Condition of ROPAX Vessel after Firewater Accumulation in Firefighting Operation

Wang

2020

JMSE

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A reliable estimation of the floating condition of a roll on/roll off cargo (ROPAX) vessel after the accumulation of firewater on the vehicle deck is extremely important for making correct decisions on evacuation and abandonment. Thus, for the seafarer working on a ROPAX vessel, there is a demand for a time-dependent prediction of the floating condition of the vessel after the firewater accumulation. For this purpose, a new iterative computational approach, based on quasi-static theory, is presented. The approach is examined through the records observed in an accident of the M/V Dashun. The results show that the approach has good accuracy and feasibility provided that the actual heeling angle and cargo shift during the accident are carefully monitored.

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Section: Discussionmentioning

confidence: 99%

A Computational Approach to the Prediction of the Floating Condition of ROPAX Vessel after Firewater Accumulation in Firefighting Operation

Wang

2020

JMSE

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“…The development of time-domain progressive flooding simulation tools is underway, which is operated on board as a way to help decision makers make decisions after detecting flooding locations [6][7][8][9][10][11][12][13]. These simulation tools implement virtually progressive flooding scenarios in a complex onboard structure.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Flooded Compartment Damage Locations in Ships by Using Spectrum Analysis of Ship Motions in Waves

Son

Roh

Kim

et al. 2021

JMSE

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Considering the nature of marine accidents, even a single accident can result in significant damage to the environment and property, as well as loss of life. Therefore, the initial response should be rapid and accurate, and various decision support systems have been developed to achieve this. Research on simulating progressive flooding on board immediately after an accident is being actively conducted, but this requires high levels of computing power. In this study, a methodology for converting simulated ship motion data into a ship motion database is presented. The model of a training ship from the Korea Institute of Maritime and Fisheries Technology and KRISO in-house code SMTP was used for ship motion computations. The short-time Fourier transform was used to convert time-series motion data into a spectrogram motion database. A methodology for deriving a predicted location of the damage center is presented. The candidate locations of the damage centers were obtained by comparing the root mean square error values of the ship motion database from the simulation and real-time ship motion data. Finally, a probability function was suggested to confirm the predicted location of the damage center. Using 100 randomly selected test cases, our method showed 95% accuracy.

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“…The fully-dynamic methods and Computational Fluid Dynamics (CFD) ones require a too high computational time. As an example, one of the fastest dynamic methods is capable to reproduce a model-scale experiment almost three times faster than real-time [7]. These performances, although being remarkable for a dynamic method, are still not acceptable for decision support purposes on a large passenger vessel, since the evacuation, if required, could be triggered too late.…”

Section: Introductionmentioning

confidence: 99%

A Fast Algorithm for Onboard Progressive Flooding Simulation

Braidotti

Mauro

2020

JMSE

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The need for decision support after a flooding casualty requires the development of fast and accurate progressive flooding simulation procedures. Here, a new quasi-static technique is presented, proposing a differential algebraic formulation capable to consider independently the flooding process in the internal rooms. The proposed method is efficient while simulating long flooding chains along rooms connected by similar size openings, a condition that likely occurs on large passenger ships. Moreover, the computational performances of the simulation procedure have been enhanced by adapting the time step to the progressive flooding pace. The adoption of an adaptive time step algorithm reduces significantly the calculation time. The novel procedure has been tested on the recommended benchmark cases for flooding simulations, highlighting the accuracy and flexibility of the proposed method.

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A Fast Simulation Method for Damaged Ship Dynamics

Cited by 26 publications

References 24 publications

A Computational Approach to the Prediction of the Floating Condition of ROPAX Vessel after Firewater Accumulation in Firefighting Operation

A Computational Approach to the Prediction of the Floating Condition of ROPAX Vessel after Firewater Accumulation in Firefighting Operation

Prediction of Flooded Compartment Damage Locations in Ships by Using Spectrum Analysis of Ship Motions in Waves

A Fast Algorithm for Onboard Progressive Flooding Simulation

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