Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique
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 perf...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-12-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/8/1/11 |
| _version_ | 1818728334673051648 |
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| author | Xinlong Zhang Zhuang Lin Simone Mancini Ping Li Dengke Liu Fei Liu Zhanwei Pang |
| author_facet | Xinlong Zhang Zhuang Lin Simone Mancini Ping Li Dengke Liu Fei Liu Zhanwei Pang |
| author_sort | Xinlong Zhang |
| collection | DOAJ |
| description | 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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| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-12-17T22:28:21Z |
| publishDate | 2019-12-01 |
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| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-4fe0cc06adbd4a1fa10ae1b7a70016e62022-12-21T21:30:17ZengMDPI AGJournal of Marine Science and Engineering2077-13122019-12-01811110.3390/jmse8010011jmse8010011Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh TechniqueXinlong Zhang0Zhuang Lin1Simone Mancini2Ping Li3Dengke Liu4Fei Liu5Zhanwei Pang6College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaDepartment of Industrial Engineering, University of Naples “Federico II”, 80125 Naples, ItalyCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, ChinaDamage 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.https://www.mdpi.com/2077-1312/8/1/11uransvofoverset meshside damagebottom damageflooding processmotion response |
| spellingShingle | 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 urans vof overset mesh side damage bottom damage flooding process motion response |
| title | Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique |
| title_full | Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique |
| title_fullStr | Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique |
| title_full_unstemmed | Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique |
| title_short | Numerical Investigation into the Effect of Damage Openings on Ship Hydrodynamics by the Overset Mesh Technique |
| title_sort | numerical investigation into the effect of damage openings on ship hydrodynamics by the overset mesh technique |
| topic | urans vof overset mesh side damage bottom damage flooding process motion response |
| url | https://www.mdpi.com/2077-1312/8/1/11 |
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