A numerical investigation on the effect of symmetric and asymmetric flooding on the damage stability of a ship

Zhang, XinLong; Lin, Zhuang; Li, Ping; Liu, DengKe; Li, Ze; Pang, Zhanwei; Wang, Meiqi

doi:10.1007/s00773-020-00706-9

Cited by 13 publications

(2 citation statements)

References 23 publications

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“…This can provide a new reference for the traditional calculation of damage stability, specifically the effects of damage information on the assessment of damage stability should be dynamically considered. Based on URANS solver and the volume of fluid (VOF) method, Zhang et al [26] studied the effects of symmetric and asymmetric flooding on the dynamic stability of a damaged ship. From the visualization of the flooding process, it can be observed that the obstruction of the longitudinal bulkhead will cause the flooding water to only accumulate on the damaged side.…”

Section: Review Of the Numerical Methodsmentioning

confidence: 99%

Experimental and Numerical Investigation into the Effects of Air–Fluid Interaction on the Dynamic Responses of a Damaged Ship

Zhang,

Mancini,

Liu

et al. 2024

JMSE

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To accurately assess the dynamic stability of the damaged ship, this paper performs an experimental campaign and presents a feasible numerical method to analyze the effects of microscopic air–fluid interactions on the motion responses of the damaged ship. The numerical approach can be applied to solve the coupled hydrodynamic behavior between the flooding process and the motion responses of the damaged ship. The volume of fluid (VOF) method was applied to capture the interface of the free surface, while the dynamic fluid–body Interaction (DFBI) morphing technique was applied to deal with mesh adaption. In particular, the UDF (user-defined field) function was activated to realize the initial distribution of the free surface. Firstly, by comparing the experimental and numerical results, the reliability of visualizing the flooding process and dealing with the motion responses of the damaged ship was efficiently verified. The numerical flooding process was able to reproduce the hydrodynamic phenomenon well, including the flooding jet, interaction, and flow between adjacent compartments. The numerical roll motion curve of the damaged ship was consistent with that predicted in the model test, with an error in roll amplitude of no more than 4%. Secondly, based on the verified numerical method, it was seen from the results with different ventilation positions that not only the air compressibility due to varying levels of ventilation cannot be neglected in damage assessment, but also the position of the ventilation hole was crucial. This was because different positions will create different paths for the compressed air to overflow and affect air–fluid interactions. Thus, the flooding force and air-impacting force acting on the internal hull will be different. In conclusion, this paper introduces a new consideration in the damage assessment of ships.

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Section: Review Of the Numerical Methodsmentioning

confidence: 99%

Experimental and Numerical Investigation into the Effects of Air–Fluid Interaction on the Dynamic Responses of a Damaged Ship

Zhang,

Mancini,

Liu

et al. 2024

JMSE

Self Cite

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“…In addition, considering that the presence of waves is not the only reason for ship's sinking after an accident occurs, many existing works also investigate the motion and flooding process of a damaged ship in calm water. In this paper, we refer to [26] to predict the survival time until capsizing for a ship in still water.…”

Section: A Limited Evacuation Timementioning

confidence: 99%

ANT: Deadline-Aware Adaptive Emergency Navigation Strategy for Dynamic Hazardous Ship Evacuation With Wireless Sensor Networks

Liu

Chen

et al. 2020

IEEE Access

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Efficient and safe ship evacuation strategy plays a critical role in protecting passengers' lives when ships encounter accidents. Existing wireless sensor network (WSN)-based emergency navigation methods mainly consider the dynamics of hazards and accordingly plan evacuation paths to minimize human exposure to the environmental hazards, such as fire and smoke. However, without sufficient consideration of the ship capsizing time and the impact of dynamic ship inclination on the passengers' walking speed, these methods may fail to evacuate passengers before the deadline. In this paper, we propose ANT, a deadlineaware adaptive emergency navigation strategy for dynamic hazardous ship evacuation with WSNs, which informs each passenger about a hazard-avoided evacuation path to successfully reach lifeboats within the specified deadline under all circumstances. To achieve this aim, ANT analyzes the process of ship capsizing to predict the specific limited evacuation time and the worst-case traversal delay. Next, an online evacuation path planning strategy is proposed based on a real-time adaptive routing algorithm to maximize navigation efficiency while ensuring user safety. We evaluate ANT by conducting prototype experiments and extensive simulations. The results demonstrate that ANT improves the navigation success ratio by 40% and 5%, compared with state-of-the-art emergency navigation systems, namely, medial axis-based approach and ENO-based oscillation-free emergency navigation approach, respectively.

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DCEFM Model for Emergency Risk Assessment of Ship Inflow

Guo

Chen²,

Wu³

et al. 2022

J. Marine. Sci. Appl.

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A numerical investigation on the effect of symmetric and asymmetric flooding on the damage stability of a ship

Cited by 13 publications

References 23 publications

Experimental and Numerical Investigation into the Effects of Air–Fluid Interaction on the Dynamic Responses of a Damaged Ship

Experimental and Numerical Investigation into the Effects of Air–Fluid Interaction on the Dynamic Responses of a Damaged Ship

ANT: Deadline-Aware Adaptive Emergency Navigation Strategy for Dynamic Hazardous Ship Evacuation With Wireless Sensor Networks

DCEFM Model for Emergency Risk Assessment of Ship Inflow

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