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Xinlong Zhang
College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China

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Journal article
Published: 23 December 2019 in Journal of Marine Science and Engineering
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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.

ACS Style

Xinlong Zhang; Zhuang Lin; Simone Mancini; Ping Li; Dengke Liu; Fei Liu; Zhanwei Pang. Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique. Journal of Marine Science and Engineering 2019, 8, 11 .

AMA Style

Xinlong Zhang, Zhuang Lin, Simone Mancini, Ping Li, Dengke Liu, Fei Liu, Zhanwei Pang. Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique. Journal of Marine Science and Engineering. 2019; 8 (1):11.

Chicago/Turabian Style

Xinlong Zhang; Zhuang Lin; Simone Mancini; Ping Li; Dengke Liu; Fei Liu; Zhanwei Pang. 2019. "Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique." Journal of Marine Science and Engineering 8, no. 1: 11.

Journal article
Published: 10 July 2019 in Journal of Marine Science and Engineering
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A detailed description of the flooding process is crucial to analyze the complex hydrodynamic behaviors and enhance the survivability of the damaged ship. In this paper, through establishing three typical damage scenarios with various locations, the commercial software CD Adapco STAR-CCM+ based on the Reynolds-Averaged Navier-Stokes (RANS) solver is applied to simulate the flooding process involving multiple compartments. The basic computational fluid dynamics (CFD) models and specific simulation settings are elaborated. The volume of fluid (VOF) method combined with the user defined field function is developed to distribute the initial free surface. The captured flooding process indicates that the air compression due to the restricted ventilation decreases the flooding amount. The obtained flooding time can provide necessary data to support for appropriate rescue management and evacuation options.

ACS Style

Xinlong Zhang; Zhuang Lin; Simone Mancini; Ping Li; Ze Li; Fei Liu. A Numerical Investigation on the Flooding Process of Multiple Compartments Based on the Volume of Fluid Method. Journal of Marine Science and Engineering 2019, 7, 211 .

AMA Style

Xinlong Zhang, Zhuang Lin, Simone Mancini, Ping Li, Ze Li, Fei Liu. A Numerical Investigation on the Flooding Process of Multiple Compartments Based on the Volume of Fluid Method. Journal of Marine Science and Engineering. 2019; 7 (7):211.

Chicago/Turabian Style

Xinlong Zhang; Zhuang Lin; Simone Mancini; Ping Li; Ze Li; Fei Liu. 2019. "A Numerical Investigation on the Flooding Process of Multiple Compartments Based on the Volume of Fluid Method." Journal of Marine Science and Engineering 7, no. 7: 211.

Journal article
Published: 17 April 2019 in 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.

ACS Style

Xinlong Zhang; Zhuang Lin; Ping Li; Yue Dong; Fei Liu. Time Domain Simulation of Damage Flooding Considering Air Compression Characteristics. Water 2019, 11, 796 .

AMA Style

Xinlong Zhang, Zhuang Lin, Ping Li, Yue Dong, Fei Liu. Time Domain Simulation of Damage Flooding Considering Air Compression Characteristics. Water. 2019; 11 (4):796.

Chicago/Turabian Style

Xinlong Zhang; Zhuang Lin; Ping Li; Yue Dong; Fei Liu. 2019. "Time Domain Simulation of Damage Flooding Considering Air Compression Characteristics." Water 11, no. 4: 796.