URANS simulations for a flooded ship in calm water and regular beam waves

Sadat-Hosseini, Hamid; Kim, Dong Hwan; Carrica, Pablo M.; Rhee, Shin Hyung; Stern, Frederick

doi:10.1016/j.oceaneng.2016.02.019

Cited by 50 publications

(11 citation statements)

References 11 publications

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“…The new approach is shown to avoid numerical stability problems, and it is demonstrated with the simulation of the Sewol accident. A CFD approach using URANS to a zero-speed damaged ship in calm water and in waves is presented by Sadat-Hosseini et al (2016). This paper includes extensive validation of both flooding and roll damping characteristics against model test.…”

Section: Numerical and Experimental Methodsmentioning

confidence: 99%

An overview of the current research on stability of ships and ocean vehicles: The STAB2018 perspective

et al. 2019

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The paper provides an insight into contemporary research on ship stability and identifies the possible directions for future research by reviewing a selection of papers published in STAB2015, ISSW2016 & 2017. These works have been organized in different sections, according to the main thematic areas of research, covering intact and damage stability, regulatory issues including probabilistic approaches, advanced numerical methods for ship motion and stability failure prediction including roll damping, operational issues related to ship stability and environmental modelling. Furthermore, the educational potential of STAB/ISSW is exemplified. This review paper is a joint effort within the SRDC (Stability R&D Committee).

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Section: Numerical and Experimental Methodsmentioning

confidence: 99%

An overview of the current research on stability of ships and ocean vehicles: The STAB2018 perspective

et al. 2019

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“…The proposed method can be used to predict the dynamic behavior of the flooding water and its impact forces on the flooded compartment [13]. Sadat-Hosseini et al [14] performed unsteady Reynold averaged Navier-Stokes (URANS) simulations for zero-speed damaged passenger ships in calm water and waves. The flooding procedure and roll decay in calm water were studied, and the motions in regular beam waves for various wavelength were analyzed.…”

Section: Introductionmentioning

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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“…In recent years, Gao et al [8] applied an integrated method to study the interaction between the dynamics of the floodwater and the damaged ship in waves, which couples a sea-keeping solver and Navier-Stokes solvers. Hamid Sadai-Hosseini et al [9] assessed CFD capability for the prediction of damaged ship motions. The Unsteady Reynolds-averaged Navier-Stokes (URANS) simulations predicted quite well the motions for all cases in calm water and regular beam waves.…”

Section: Introductionmentioning

confidence: 99%

Time Domain Simulation of Damage Flooding Considering Air Compression Characteristics

Zhang¹,

Lin²,

Li³

et al. 2019

Water

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An accurate analysis of the entire flooding process is critical to assess the damaged stability when a ship encounters distressed accidents such as collision, stranding, or grounding. Among many factors affecting the flooding process and damaged stability, the complex effect of air compression is significant and worthy of further research. In this paper, through establishing scenarios of the damage flooding for a cruise ship, the commercial software CD Adapco STARCCM+ is applied to perform time domain simulation of flooding processes under different ventilation levels. The basic mathematical models about air compression and specific simulation settings of computational fluid dynamics (CFD) are presented in detail. The simulation results show that water ingression results in an increase of air pressure and density inside the flooded compartment. The corresponding air compression can significantly delay the flooding process if the ventilation level is limited to a certain ratio. Finally, the stability of the damaged ship is affected.

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URANS simulations for a flooded ship in calm water and regular beam waves

Cited by 50 publications

References 11 publications

An overview of the current research on stability of ships and ocean vehicles: The STAB2018 perspective

An overview of the current research on stability of ships and ocean vehicles: The STAB2018 perspective

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

Time Domain Simulation of Damage Flooding Considering Air Compression Characteristics

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