Validation of 6-DOF motion simulations for ship turning in regular waves

Yasukawa, Hironori; Hasnan, M. A. A.; Matsuda, Akihiko

doi:10.1007/s00773-020-00793-8

Cited by 23 publications

(18 citation statements)

References 17 publications

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“…As a result of these impediments, only a few institutes have been able to carry out such tests in waves. For example, the Iowa Institute of Hydraulic Research (IIHR) (Araki et al, 2012;Sanada et al, 2013;Sanada et al, 2019) and Hiroshima University (HR) (Yasukawa et al, 2021) conducted standard manoeuvring tests in waves.…”

Section: Introductionmentioning

confidence: 99%

Free running CFD simulations to investigate ship manoeuvrability in waves

2021

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Section: Introductionmentioning

confidence: 99%

Free running CFD simulations to investigate ship manoeuvrability in waves

2021

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“…The MMG models established in existing research are introduced to apply the present seakeeping-maneuvering coupling method for the S175 containership 15 and for the KVLCC2 tanker. 24 In the previous studies, the turning trajectories in calm water obtained by solving only the maneuvering motion equations were validated by result comparisons of the free-running model tests 15,25 as shown in Figure 6. It was confirmed that the present coupling method can produce the same turning trajectories as the simulation results.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Next, for the S175 containership, free-running simulations are conducted for course-keeping in regular waves. In the previous study, 15 free-running model tests were carried out for the regular wave conditions which are summarized in Table 2, and the speed loss and attitude to maintain a straight route were measured. Based on a comparison with the experimental data, the present time-domain seakeeping-maneuvering coupling method is validated.…”

Section: Simulation Resultsmentioning

confidence: 99%

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Study on ship operation performance in actual seaways using time-domain free-running simulation

Lee

Kim

2020

Proceedings of the Institution of Mechanical Engineers, Part M:

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This study considers the evaluation of ship operational performance in real sea states using a time-domain approach. The current seakeeping-maneuvering coupling approach consists of two modules. First, in the seakeeping module, the time-domain three-dimensional Rankine panel method is applied to compute wave-induced forces and resultant ship motion. To validate this module, the computational results for wave drift force are compared with the existing experimental data for various forward speeds and regular wave conditions. Second, in the maneuvering module, the equations of motion with 4 degrees of freedom that are based on the Maneuvering Modeling Group are solved to simulate the ship navigation. The computed seakeeping and maneuvering values are immediately transferred between the two modules in the time domain, and so they are directly integrated. By applying this coupling method, a free-running simulation for a ship navigating along a given route is performed. The trajectory tracking method based on a proportional–derivative-based rudder control is adopted for straight course-keeping. Not only the speed loss but also the attitude for route maintenance is evaluated for various environmental load conditions. The simulation results are validated by a comparison with those of the existing free-running model test. Based on comparisons, environmental load effects and resultant quantities on operational performance are discussed.

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“…The physical tank model test is the most reliable method to study the hydrodynamic performance of ships. The most representative experimental research is the work of Yasukawa's group at Hiroshima University [1][2][3][4], which investigated ship maneuverability in waves in a physical tank on SR108 and S175 container ship models and a KVLCC2 ship model. Xu et al [5] and Kinoshita et al [6] conducted planar motion mechanism (PMM) tests in waves to measure the hydrodynamic force and horizontal displacement of the ship, thereby analyzing the influence of the low-frequency wave drift forces on the ship maneuvering.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Wave Drift Load and Turning Characteristics of KVLCC2 Ship in Regular Waves Based on TEBEM

Chen

Zhang

Duan

2022

JMSE

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Maritime traffic has increased considerably in recent years, making energy efficiency and navigation safety of ships more crucial than ever. Hence, a two-time scale model based on the Taylor expansion boundary element method (TEBEM) is proposed to predict ship turning trajectories in regular waves. The maneuvering motion is calculated using a three degrees of freedom MMG model that considers the wave drift loads. TEBEM overcomes the shortcomings of the constant panel method in solving tangential induced velocity at a non-smooth boundary and that of the high-order boundary element method in dealing with a high-order derivative of the velocity potential at the corner. This significantly improves the calculation accuracy of the induced velocity and high-order derivative of velocity potential. Firstly, based on the TEBEM, the surge and sway wave drift forces and yaw moment of the KVLCC2 model with drift angle under full wave headings are calculated and compared with computational fluid dynamics results, using which the calculation accuracy of TEBEM is verified. Subsequently, the two-time scale model is used to calculate the turning trajectories of the KVLCC2 model in regular waves with different wave headings, wave frequencies, and wave steepness. The numerical results show that the drift angle has a certain effect on the wave drift loads of the ship, and the proposed model can effectively predict the ship’s turning motion in regular waves.

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Validation of 6-DOF motion simulations for ship turning in regular waves

Cited by 23 publications

References 17 publications

Free running CFD simulations to investigate ship manoeuvrability in waves

Free running CFD simulations to investigate ship manoeuvrability in waves

Study on ship operation performance in actual seaways using time-domain free-running simulation

Numerical Study of Wave Drift Load and Turning Characteristics of KVLCC2 Ship in Regular Waves Based on TEBEM

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