A Numerical Investigation on the Flooding Process of Multiple Compartments Based on the Volume of Fluid Method

Zhang, XinLong; Lin, Zhuang; Mancini, Simone; Li, Ping; Li, Ze; Liu, Fei

doi:10.3390/jmse7070211

Cited by 19 publications

(5 citation statements)

References 17 publications

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“…An example of scientific application would be the study of the behavior of vessels subjected to severe beam wind [80], which would require advanced simulation methods and experimental data for validating their results, as shown by [55,81,82]. Simulation methods based in Computational Fluid Dynamics (CFD) should be employed to analyze accidents related to flooding, fire and explosions, and oil spills, as demonstrated by Zhang et al [83], Xie et al [84], and Tkalich [85], respectively. On the other hand, structural analyses, using tools such as Finite Element Methods (FEM), could be employed to investigate collision and grounding accidents, as proposed by Martinez et al [86] and Prabowo et al [87], respectively.…”

Section: Preventative Measures To Reduce Passenger Ship Accidents In ...mentioning

confidence: 99%

Marine Accidents in the Brazilian Amazon: The Problems and Challenges in the Initiatives for Their Prevention Focused on Passenger Ships

et al. 2022

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The Brazilian Amazon is part of one of the largest river systems in the world, in which the transport of cargo and passengers is commonplace. However, several accidents still occur to passenger ships, causing fatalities. Transportation occurs commonly in remote regions, where there are transport inequalities, and emergency assistance is hard to find. This can affect sustainability in communities with considerable levels of economic and social vulnerability. More information is needed about accidents involving inland transport in the Amazon, to identify the threats to ships and propose strategies for accident prevention. This paper addresses the main problems that long-distance passenger ships face in the Brazilian Amazon, presenting an integrated framework towards accident prevention. First, the present situation is characterized in terms of ship description, spatial distribution, and regulations that are applicable. Next, possible causes of passenger ship accidents are discussed, including topics of concern that should be considered in the Amazon waterways. Finally, measures to help minimize passenger ship accidents are proposed, and the social relevance is discussed. It was found that accidents in the Amazon are due to a combination of human and environmental factors. Stakeholders should strengthen the technical and legal training of ship operators. The use of new technologies for navigational aid and necessary maintenance of ships is suggested. Marine accident prevention initiatives should consider local conditions, such as environmental preservation, cultural respect, and difficulties related to navigation through the complex riverine system of the Amazon region.

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Section: Preventative Measures To Reduce Passenger Ship Accidents In ...mentioning

confidence: 99%

Marine Accidents in the Brazilian Amazon: The Problems and Challenges in the Initiatives for Their Prevention Focused on Passenger Ships

et al. 2022

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“…In order to reproduce the real physical process, although the air compression is not considered, the air phase is still characterized by an ideal gas model. The necessary user defined field function (UDFF) model is needed to distribute the water and air [33]. Finally, a realizable k-ε two-Layer turbulence model is applied to solve the Reynolds stress problem, which can provide a good compromise between robustness, computational cost, and accuracy [34].…”

Section: Simulation Domain and Physical Modelsmentioning

confidence: 99%

“…According to Zhang et al [33] and Begovic et al [35], the boundaries of the simulation domain are represented in Figure 8. The chosen boundary conditions and optimal solver settings are presented in Table 4.…”

Section: Boundary Conditions and Solver Settingsmentioning

confidence: 99%

Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique

Zhang

Lin

Mancini

et al. 2019

JMSE

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Damage stability is difficult to assess due to the complex hydrodynamic phenomena regarding interactions between fluid and structures. Therefore, a detailed analysis of the flooding progression and motion responses is important for improving ship safety. In this paper, numerical simulations are performed on the damaged DTMB 5415 ship at zero speed. All calculation are carried out using CD Adapco Star CCM + software, investigating the effect of damage openings on ship hydrodynamics, including the side damage and the bottom damage. The computational domain is modelled by the overset mesh and solved using the unsteady Reynold-average Navier-Stokes (URANS) solver. An implicit solver is used to find the field of all hydrodynamics unknown quantities, in conjunction with an iterative solver to solve each time step. The Volume of Fluid (VOF) method is applied to visualize the flooding process and capture the complex hydrodynamics behaviors. The simulation results indicated that two damage locations produce the characteristic flooding processes, and the motion responses corresponding to the hydrodynamic behaviors are different. Through comparative analysis, due to the difference between the horizontal impact on the longitudinal bulkhead and the vertical impact on the bottom plate, the bottom damage scenario always has a larger heel angle than the side damage scenario in the same period. However, the pitch motions are basically consistent. Generally, the visualization of the flooding process is efficient to explain the causes of the motion responses. Also, when the damage occurs, regardless of the bottom damage or the side damage, the excessive heel angle due to asymmetric flooding is often a threat to ship survivability with respect to the pitch angle.

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“…The RANS method and k − ε model have been successfully used in ocean engineering and provide a good compromise between robustness, computational cost, and accuracy [21].…”

Section: Mathematical and Numerical Modelsmentioning

confidence: 99%

Experimental and Numerical Model Investigations of the Underwater Towing of a Subsea Module

Zan

Guo

Yuan

et al. 2019

JMSE

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In underwater towing operations, the drag force and vertical offset angle of towropes are important considerations when choosing and setting up towing equipment. The aim of this paper is to study the variation in drag force, vertical offset angle, resistance, and attitude for towing operations with a view to optimizing these operations. An underwater experiment was conducted using a 1:8 scale physical model of a subsea module. A comprehensive series of viscous Computational Fluid Dynamics (CFD) simulations were carried out based on Reynolds-averaged Navier–Stokes equations for uniform velocity towing. The results of the simulation were compared with experimental data and showed good agreement. Numerical results of the vorticity field and streamlines at the towing speeds were presented to analyze the distribution of vortexes and flow patterns. The resistance components were analyzed based on the numerical result. It was found that the lateral direction was a better direction for towing operations because of the smaller drag force, resistance, and offset angle. Similar patterns and locations of streamlines and vortexes were present in both the longitudinal and lateral directions, the total resistance coefficient decreases at a Reynolds number greater than that of a cylinder.

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A Numerical Investigation on the Flooding Process of Multiple Compartments Based on the Volume of Fluid Method

Cited by 19 publications

References 17 publications

Marine Accidents in the Brazilian Amazon: The Problems and Challenges in the Initiatives for Their Prevention Focused on Passenger Ships

Marine Accidents in the Brazilian Amazon: The Problems and Challenges in the Initiatives for Their Prevention Focused on Passenger Ships

Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique

Experimental and Numerical Model Investigations of the Underwater Towing of a Subsea Module

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