A simulation model for ship response in flooding scenario

Acanfora, Maria; Cirillo, Antonio

doi:10.1177/1475090215627839

Cited by 7 publications

(18 citation statements)

References 17 publications

(41 reference statements)

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“…In all flooding applications, the discharge coefficient, C D , is 0.65, in analogy with [14]. Additional details for Sections 2 and 3 can be found in [20,21].…”

Section: Flooding Simulations On the Barge Modelmentioning

confidence: 99%

“…In [20,21], a novel method in simulating water flooding and its effects on ship motions was presented. It is based on the lumped mass approach, considering the inclination of a flat free-surface due to the action of the ship's lateral acceleration and thus the more accurate position of the lumped mass.…”

Section: Introductionmentioning

confidence: 99%

“…The current paper presents improvements of the method developed in [20,21], accounting for the water exchange through the damage opening in ship dynamics and accounting for longitudinal acceleration effects in the free-surface inclination.…”

Section: Introductionmentioning

confidence: 99%

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A Fast Simulation Method for Damaged Ship Dynamics

Acanfora

Begović

Luca

2019

JMSE

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Ship accidents that entail flooding may lead to disastrous consequences which could be avoided or mitigated based on the knowledge of damaged ship dynamics. The dynamic behaviour of a damaged hull is a complex phenomenon involving the interaction of the flooded water and the ship motions. The presence of a damage opening allows water flow into and out from the compartment, which further complicates the mathematical description of the problem. A fast simulation method, based on the lumped mass approach, is developed and presented. The lumped mass path in space depends on free-surface inclinations that differ from the ship angles of the roll and pitch. The viscous effects in the floodwater dynamics are implemented based on the model for the dissipation of the energy of standing waves in rectangular rooms. The method applies to both the transient stage of flooding and to the dynamic behaviour of a flooded ship in regular waves. In the first case, viscous effects are implemented considering the water in the compartment variable with time. Several case studies are carried out on three different hull models: Transient stage of flooding, roll decay of the damaged hull, and steady state responses in waves are simulated and compared with available experimental data.

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“…In all flooding applications, the discharge coefficient, C D , is 0.65, in analogy with [14]. Additional details for Sections 2 and 3 can be found in [20,21].…”

Section: Flooding Simulations On the Barge Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Fast Simulation Method for Damaged Ship Dynamics

Acanfora

Begović

Luca

2019

JMSE

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“…This model was further used by Manderbacka et al (2015aManderbacka et al ( , 2015b to study the effect on the dynamic behaviour of a damaged ship and the floodwater progression among compartments. It is presented by studies that the difference in flooding and ship behaviour between undivided compartment and divided compartments is obviously large, and flooded compartments have a significant effect on floodwater and ship motions (Acanfora and Cirillo 2017;Gao et al 2011;Manderbacka and Ruponen 2016).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on stability of intact and damaged combatant ship in a beam sea

Day

Boulougouris

et al. 2018

Ships and Offshore Structures

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Experimental Investigation on Stability of Intact and Damaged Combatant Ship in Beam Sea The stability of a damaged ship is influenced by several factors including encountered waves, ship motions, floodwater behaviour and interactions between ship motions and floodwater. The behaviour of floodwater is highly nonlinear so that a physical experiment is one of the best ways to obtain the assessment of damaged ship behaviour. The present study mainly addresses an experimental investigation on the stability of an intact and damaged combatant vessel in beam waves. Tests are carried out with a double-bottom naval combatant vessel DTMB 5415, which has been widely used in Benchmark studies for experimental investigation and the validation of numerical simulations. Free decay tests in roll with and without moorings are implemented in calm water, while the model is moored at the bow and stern during the tests in regular waves. In order to investigate the performance of the intact and damaged ship in the beam the damaged opening is located at starboard near the midship so that floodwater can ingress and egress from the opening where two compartments can be flooded. It is shown that beam waves flooding in and out from the damaged opening and the interaction between ship behaviour and water surface effect in the damaged compartments have a significant impact on ship motions and loads acting on the ship.

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“…In Acanfora and Cirillo, 38 a novel approach in simulating water flooding and its effects on ship motions is presented. This approach is intended to be an intermediate technique between the quasi-static method (uncoupled) and fully coupled methods.…”

Section: Introductionmentioning

confidence: 99%

On the development of a fast modeling of floodwater effects on ship motions in waves

Acanfora

Cirillo

2017

Proceedings of the Institution of Mechanical Engineers, Part M:

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The motions of a flooded ship in waves are difficult to evaluate. They are affected by complex phenomena involving ship and floodwater dynamic interactions. Several numerical methods have been proposed to estimate the dynamic behavior of a damaged ship in waves. In this article, a fast simulation tool is developed to tackle the problem, aiming at a simplified method with an acceptable accuracy of the results. A novel approach in simulating floodwater effects on ship motions is presented. The method allows modeling the floodwater motions (seen as lumped mass) out of phase from ship motions. This technique is based on the basic fluid mechanics knowledge for a liquid in a uniformly accelerated tank. The study intends to analyze the behavior of a flooded ship in regular beam waves, for compartment fillings that involve shallow and intermediate fluid depths. The nonlinear model for the roll damping moment of a ship is implemented. An attempt to model viscous effects in the floodwater dynamics is proposed and applied. Two sets of applications are carried out on two different hull models. The comparisons of the intact and of the flooded ship responses in waves are conducted and discussed.

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A simulation model for ship response in flooding scenario

Cited by 7 publications

References 17 publications

A Fast Simulation Method for Damaged Ship Dynamics

A Fast Simulation Method for Damaged Ship Dynamics

Experimental investigation on stability of intact and damaged combatant ship in a beam sea

On the development of a fast modeling of floodwater effects on ship motions in waves

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